176.
A Haffner, A K Hatz, C Hoch, B V Lotsch, D Johrendt
Synthesis and Structure of the Sodium Phosphidosilicate Na2SiP2 Journal Article
In: European Journal of Inorganic Chemistry, 2019, ISSN: 1434-1948.
Links | Tags: Foundry Inorganic
@article{,
title = {Synthesis and Structure of the Sodium Phosphidosilicate Na2SiP2},
author = {A Haffner and A K Hatz and C Hoch and B V Lotsch and D Johrendt},
url = {\<Go to ISI\>://WOS:000511390500001},
doi = {10.1002/ejic.201901083},
issn = {1434-1948},
year = {2019},
date = {2019-12-29},
journal = {European Journal of Inorganic Chemistry},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
175.
A M Ferrenti, S Klemenz, S M Lei, X Y Song, P Ganter, B V Lotsch, L M Schoop
Change in Magnetic Properties upon Chemical Exfoliation of FeOCl Journal Article
In: Inorganic Chemistry, vol. 59, no. 2, pp. 1176-1182, 2019, ISSN: 0020-1669.
Links | Tags: Foundry Inorganic
@article{,
title = {Change in Magnetic Properties upon Chemical Exfoliation of FeOCl},
author = {A M Ferrenti and S Klemenz and S M Lei and X Y Song and P Ganter and B V Lotsch and L M Schoop},
url = {\<Go to ISI\>://WOS:000509420100027},
doi = {10.1021/acs.inorgchem.9b02856},
issn = {0020-1669},
year = {2019},
date = {2019-12-27},
journal = {Inorganic Chemistry},
volume = {59},
number = {2},
pages = {1176-1182},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
174.
J Schedlbauer, P Wilhelm, L Grabenhorst, M E Federl, B Lalkens, F Hinderer, U Scherf, S Höger, P Tinnefeld, S Bange, J Vogelsang, J M Lupton
Ultrafast Single-Molecule Fluorescence Measured by Femtosecond Double-Pulse Excitation Photon Antibunching Journal Article
In: Nano Letters, 2019, ISSN: 1530-6984.
Links | Tags: Foundry Organic, Molecularly-Functionalized
@article{,
title = {Ultrafast Single-Molecule Fluorescence Measured by Femtosecond Double-Pulse Excitation Photon Antibunching},
author = {J Schedlbauer and P Wilhelm and L Grabenhorst and M E Federl and B Lalkens and F Hinderer and U Scherf and S H\"{o}ger and P Tinnefeld and S Bange and J Vogelsang and J M Lupton},
url = {https://doi.org/10.1021/acs.nanolett.9b04354},
doi = {10.1021/acs.nanolett.9b04354},
issn = {1530-6984},
year = {2019},
date = {2019-12-23},
journal = {Nano Letters},
keywords = {Foundry Organic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
173.
S Zhang, L Diehl, S Wrede, B V Lotsch, C Scheu
Structural Evolution of Ni-Based Co-Catalysts on [Ca2Nb3O10]− Nanosheets during Heating and Their Photocatalytic Properties Journal Article
In: Catalysts, vol. 10, no. 1, pp. 13, 2019, ISSN: 2073-4344.
Links | Tags: Foundry Inorganic
@article{,
title = {Structural Evolution of Ni-Based Co-Catalysts on [Ca2Nb3O10]− Nanosheets during Heating and Their Photocatalytic Properties},
author = {S Zhang and L Diehl and S Wrede and B V Lotsch and C Scheu},
url = {https://www.mdpi.com/2073-4344/10/1/13},
issn = {2073-4344},
year = {2019},
date = {2019-12-20},
journal = {Catalysts},
volume = {10},
number = {1},
pages = {13},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
172.
Y Negrín-Montecelo, M Comesaña-Hermo, L K Khorashad, A Sousa-Castillo, Z Wang, M Pérez-Lorenzo, T Liedl, A O Govorov, M A Correa-Duarte
In: ACS Energy Letters, pp. 395-402, 2019.
Links | Tags: Foundry Inorganic, Molecularly-Functionalized
@article{,
title = {Photophysical Effects behind the Efficiency of Hot Electron Injection in Plasmon-Assisted Catalysis: The Joint Role of Morphology and Composition},
author = {Y Negr\'{i}n-Montecelo and M Comesa\~{n}a-Hermo and L K Khorashad and A Sousa-Castillo and Z Wang and M P\'{e}rez-Lorenzo and T Liedl and A O Govorov and M A Correa-Duarte},
url = {https://doi.org/10.1021/acsenergylett.9b02478},
doi = {10.1021/acsenergylett.9b02478},
year = {2019},
date = {2019-12-12},
journal = {ACS Energy Letters},
pages = {395-402},
keywords = {Foundry Inorganic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
171.
S Fust, A Faustmann, D J Carrad, J Bissinger, B Loitsch, M Döblinger, J Becker, G Abstreiter, J J Finley, G Koblmüller
Quantum-Confinement-Enhanced Thermoelectric Properties in Modulation-Doped GaAs–AlGaAs Core–Shell Nanowires Journal Article
In: Advanced Materials, vol. 32, no. 4, pp. 1905458, 2019, ISSN: 0935-9648.
Abstract | Links | Tags: Foundry Inorganic, Molecularly-Functionalized
@article{,
title = {Quantum-Confinement-Enhanced Thermoelectric Properties in Modulation-Doped GaAs\textendashAlGaAs Core\textendashShell Nanowires},
author = {S Fust and A Faustmann and D J Carrad and J Bissinger and B Loitsch and M D\"{o}blinger and J Becker and G Abstreiter and J J Finley and G Koblm\"{u}ller},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201905458},
doi = {10.1002/adma.201905458},
issn = {0935-9648},
year = {2019},
date = {2019-12-09},
journal = {Advanced Materials},
volume = {32},
number = {4},
pages = {1905458},
abstract = {Abstract Nanowires (NWs) hold great potential in advanced thermoelectrics due to their reduced dimensions and low-dimensional electronic character. However, unfavorable links between electrical and thermal conductivity in state-of-the-art unpassivated NWs have, so far, prevented the full exploitation of their distinct advantages. A promising model system for a surface-passivated one-dimensional (1D)-quantum confined NW thermoelectric is developed that enables simultaneously the observation of enhanced thermopower via quantum oscillations in the thermoelectric transport and a strong reduction in thermal conductivity induced by the core\textendashshell heterostructure. High-mobility modulation-doped GaAs/AlGaAs core\textendashshell NWs with thin (sub-40 nm) GaAs NW core channel are employed, where the electrical and thermoelectric transport is characterized on the same exact 1D-channel. 1D-sub-band transport at low temperature is verified by a discrete stepwise increase in the conductance, which coincided with strong oscillations in the corresponding Seebeck voltage that decay with increasing sub-band number. Peak Seebeck coefficients as high as ≈65\textendash85 µV K−1 are observed for the lowest sub-bands, resulting in equivalent thermopower of S2σ ≈ 60 µW m−1 K−2 and S2G ≈ 0.06 pW K−2 within a single sub-band. Remarkably, these core\textendashshell NW heterostructures also exhibit thermal conductivities as low as ≈3 W m−1 K−1, about one order of magnitude lower than state-of-the-art unpassivated GaAs NWs.},
keywords = {Foundry Inorganic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
Abstract Nanowires (NWs) hold great potential in advanced thermoelectrics due to their reduced dimensions and low-dimensional electronic character. However, unfavorable links between electrical and thermal conductivity in state-of-the-art unpassivated NWs have, so far, prevented the full exploitation of their distinct advantages. A promising model system for a surface-passivated one-dimensional (1D)-quantum confined NW thermoelectric is developed that enables simultaneously the observation of enhanced thermopower via quantum oscillations in the thermoelectric transport and a strong reduction in thermal conductivity induced by the core–shell heterostructure. High-mobility modulation-doped GaAs/AlGaAs core–shell NWs with thin (sub-40 nm) GaAs NW core channel are employed, where the electrical and thermoelectric transport is characterized on the same exact 1D-channel. 1D-sub-band transport at low temperature is verified by a discrete stepwise increase in the conductance, which coincided with strong oscillations in the corresponding Seebeck voltage that decay with increasing sub-band number. Peak Seebeck coefficients as high as ≈65–85 µV K−1 are observed for the lowest sub-bands, resulting in equivalent thermopower of S2σ ≈ 60 µW m−1 K−2 and S2G ≈ 0.06 pW K−2 within a single sub-band. Remarkably, these core–shell NW heterostructures also exhibit thermal conductivities as low as ≈3 W m−1 K−1, about one order of magnitude lower than state-of-the-art unpassivated GaAs NWs.
170.
T W He, K Reuter, A J Du
Atomically dispersed asymmetric Cu-B pair on 2D carbon nitride synergistically boosts the conversion of CO into C-2 products Journal Article
In: Journal of Materials Chemistry A, vol. 8, no. 2, pp. 599-606, 2019, ISSN: 2050-7488.
Links | Tags: Foundry Inorganic
@article{,
title = {Atomically dispersed asymmetric Cu-B pair on 2D carbon nitride synergistically boosts the conversion of CO into C-2 products},
author = {T W He and K Reuter and A J Du},
url = {\<Go to ISI\>://WOS:000505561500008},
doi = {10.1039/c9ta12090d},
issn = {2050-7488},
year = {2019},
date = {2019-12-09},
journal = {Journal of Materials Chemistry A},
volume = {8},
number = {2},
pages = {599-606},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
169.
A Heuer-Jungemann, T Liedl
From DNA Tiles to Functional DNA Materials Journal Article
In: Trends in Chemistry, vol. 1, no. 9, pp. 799-814, 2019, ISSN: 2589-5974.
Abstract | Links | Tags: Foundry Organic
@article{nokey,
title = {From DNA Tiles to Functional DNA Materials},
author = {A Heuer-Jungemann and T Liedl},
url = {https://www.sciencedirect.com/science/article/pii/S258959741930190X},
doi = {https://doi.org/10.1016/j.trechm.2019.07.006},
issn = {2589-5974},
year = {2019},
date = {2019-12-01},
journal = {Trends in Chemistry},
volume = {1},
number = {9},
pages = {799-814},
abstract = {Over the past few decades, DNA has turned into one of the most widely used molecular linkers and a versatile building block for the self-assembly of DNA nanostructures. Such complexes, composed of only a few oligonucleotides (e.g., DNA tiles) or assembled from hundreds of synthetic and natural scaffolding strands (e.g., DNA origami), are being increasingly assembled into higher-order architectures such as lattices and crystals. A wide variety of assembly methods and techniques (e.g., solution-phase and substrate-assisted sticky-ended cohesion or blunt-end stacking) have emerged and are constantly being refined. This review provides a summary of the methods and building blocks for the assembly of 2D and 3D DNA lattices and crystals, and discusses some of their potential applications in materials science.},
keywords = {Foundry Organic},
pubstate = {published},
tppubtype = {article}
}
Over the past few decades, DNA has turned into one of the most widely used molecular linkers and a versatile building block for the self-assembly of DNA nanostructures. Such complexes, composed of only a few oligonucleotides (e.g., DNA tiles) or assembled from hundreds of synthetic and natural scaffolding strands (e.g., DNA origami), are being increasingly assembled into higher-order architectures such as lattices and crystals. A wide variety of assembly methods and techniques (e.g., solution-phase and substrate-assisted sticky-ended cohesion or blunt-end stacking) have emerged and are constantly being refined. This review provides a summary of the methods and building blocks for the assembly of 2D and 3D DNA lattices and crystals, and discusses some of their potential applications in materials science.
168.
F Podjaski, D Weber, S Zhang, L Diehl, R Eger, V Duppel, Alarcon E Llado, G Richter, F Haase, A Fontcuberta I Morral, C Scheu, B V Lotsch
Rational strain engineering in delafossite oxides for highly efficient hydrogen evolution catalysis in acidic media Journal Article
In: Nature Catalysis, vol. 3, pp. 1-9, 2019.
Links | Tags: Solid-Liquid
@article{,
title = {Rational strain engineering in delafossite oxides for highly efficient hydrogen evolution catalysis in acidic media},
author = {F Podjaski and D Weber and S Zhang and L Diehl and R Eger and V Duppel and Alarcon E Llado and G Richter and F Haase and A Fontcuberta I Morral and C Scheu and B V Lotsch},
doi = {10.1038/s41929-019-0400-x},
year = {2019},
date = {2019-12-01},
journal = {Nature Catalysis},
volume = {3},
pages = {1-9},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
167.
L D M Peters, J Kussmann, C Ochsenfeld
Nonadiabatic Molecular Dynamics on Graphics Processing Units: Performance and Application to Rotary Molecular Motors Journal Article
In: Journal of Chemical Theory and Computation, vol. 15, no. 12, pp. 6647-6659, 2019, ISSN: 1549-9618.
Abstract | Links | Tags: Foundry Organic, Molecularly-Functionalized, Solid-Liquid
@article{nokey,
title = {Nonadiabatic Molecular Dynamics on Graphics Processing Units: Performance and Application to Rotary Molecular Motors},
author = {L D M Peters and J Kussmann and C Ochsenfeld},
url = {https://doi.org/10.1021/acs.jctc.9b00859},
doi = {10.1021/acs.jctc.9b00859},
issn = {1549-9618},
year = {2019},
date = {2019-11-25},
journal = {Journal of Chemical Theory and Computation},
volume = {15},
number = {12},
pages = {6647-6659},
abstract = {Nonadiabatic molecular dynamics (NAMD) simulations of molecular systems require the efficient evaluation of excited-state properties, such as energies, gradients, and nonadiabatic coupling vectors. Here, we investigate the use of graphics processing units (GPUs) in addition to central processing units (CPUs) to efficiently calculate these properties at the time-dependent density functional theory (TDDFT) level of theory. Our implementation in the FermiONs++ program package uses the J-engine and a preselective screening procedure for the calculation of Coulomb and exchange kernels, respectively. We observe good speed-ups for small and large molecular systems (comparable to those observed in ground-state calculations) and reduced (down to sublinear) scaling behavior with respect to the system size (depending on the spatial locality of the investigated excitation). As a first illustrative application, we present efficient NAMD simulations of a series of newly designed light-driven rotary molecular motors and compare their S1 lifetimes. Although all four rotors show different S1 excitation energies, their ability to rotate upon excitation is conserved, making the series an interesting starting point for rotary molecular motors with tunable excitation energies.},
keywords = {Foundry Organic, Molecularly-Functionalized, Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
Nonadiabatic molecular dynamics (NAMD) simulations of molecular systems require the efficient evaluation of excited-state properties, such as energies, gradients, and nonadiabatic coupling vectors. Here, we investigate the use of graphics processing units (GPUs) in addition to central processing units (CPUs) to efficiently calculate these properties at the time-dependent density functional theory (TDDFT) level of theory. Our implementation in the FermiONs++ program package uses the J-engine and a preselective screening procedure for the calculation of Coulomb and exchange kernels, respectively. We observe good speed-ups for small and large molecular systems (comparable to those observed in ground-state calculations) and reduced (down to sublinear) scaling behavior with respect to the system size (depending on the spatial locality of the investigated excitation). As a first illustrative application, we present efficient NAMD simulations of a series of newly designed light-driven rotary molecular motors and compare their S1 lifetimes. Although all four rotors show different S1 excitation energies, their ability to rotate upon excitation is conserved, making the series an interesting starting point for rotary molecular motors with tunable excitation energies.
166.
D A Duncan, P S Deimel, A Wiengarten, M Paszkiewicz, P C Aguilar, R G Acres, F Klappenberger, W Auwarter, A P Seitsonen, J V Barth, F Allegretti
Bottom-Up Fabrication of a Metal-Supported Oxo-Metal Porphyrin Journal Article
In: Journal of Physical Chemistry C, vol. 123, no. 51, pp. 31011-31025, 2019, ISSN: 1932-7447.
Links | Tags: Foundry Inorganic
@article{,
title = {Bottom-Up Fabrication of a Metal-Supported Oxo-Metal Porphyrin},
author = {D A Duncan and P S Deimel and A Wiengarten and M Paszkiewicz and P C Aguilar and R G Acres and F Klappenberger and W Auwarter and A P Seitsonen and J V Barth and F Allegretti},
url = {\<Go to ISI\>://WOS:000505632900028},
doi = {10.1021/acs.jpcc.9b08661},
issn = {1932-7447},
year = {2019},
date = {2019-11-25},
journal = {Journal of Physical Chemistry C},
volume = {123},
number = {51},
pages = {31011-31025},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
165.
S Rieger, B J Bohn, M Doblinger, A F Richter, Y Tong, K Wang, P Muller-Buschbaum, L Polavarapu, L Leppert, J K Stolarczyk, J Feldmann
Excitons and narrow bands determine the optical properties of cesium bismuth halides Journal Article
In: Physical Review B, vol. 100, no. 20, 2019, ISSN: 2469-9950.
Links | Tags: Foundry Inorganic, Solid-Solid
@article{,
title = {Excitons and narrow bands determine the optical properties of cesium bismuth halides},
author = {S Rieger and B J Bohn and M Doblinger and A F Richter and Y Tong and K Wang and P Muller-Buschbaum and L Polavarapu and L Leppert and J K Stolarczyk and J Feldmann},
url = {\<Go to ISI\>://WOS:000498055800001},
doi = {10.1103/PhysRevB.100.201404},
issn = {2469-9950},
year = {2019},
date = {2019-11-20},
journal = {Physical Review B},
volume = {100},
number = {20},
keywords = {Foundry Inorganic, Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
164.
M Kick, H Oberhofer
Towards a transferable design of solid-state embedding models on the example of a rutile TiO2 (110) surface Journal Article
In: Journal of Chemical Physics, vol. 151, no. 18, 2019, ISSN: 0021-9606.
Links | Tags: Molecularly-Functionalized, Solid-Liquid
@article{,
title = {Towards a transferable design of solid-state embedding models on the example of a rutile TiO2 (110) surface},
author = {M Kick and H Oberhofer},
url = {\<Go to ISI\>://WOS:000497760200011},
doi = {10.1063/1.5125204},
issn = {0021-9606},
year = {2019},
date = {2019-11-14},
journal = {Journal of Chemical Physics},
volume = {151},
number = {18},
keywords = {Molecularly-Functionalized, Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
163.
K S Wienhold, V Körstgens, S Grott, X Jiang, M Schwartzkopf, S V Roth, P Müller-Buschbaum
Effect of Solvent Additives on the Morphology and Device Performance of Printed Nonfullerene Acceptor Based Organic Solar Cells Journal Article
In: ACS Applied Materials & Interfaces, vol. 11, no. 45, pp. 42313-42321, 2019, ISSN: 1944-8244.
Abstract | Links | Tags: Foundry Organic, Solid-Solid
@article{nokey,
title = {Effect of Solvent Additives on the Morphology and Device Performance of Printed Nonfullerene Acceptor Based Organic Solar Cells},
author = {K S Wienhold and V K\"{o}rstgens and S Grott and X Jiang and M Schwartzkopf and S V Roth and P M\"{u}ller-Buschbaum},
url = {https://doi.org/10.1021/acsami.9b16784},
doi = {10.1021/acsami.9b16784},
issn = {1944-8244},
year = {2019},
date = {2019-11-13},
journal = {ACS Applied Materials \& Interfaces},
volume = {11},
number = {45},
pages = {42313-42321},
abstract = {Printing of active layers of high-efficiency organic solar cells and morphology control by processing with varying solvent additive concentrations are important to realize real-world use of bulk-heterojunction photovoltaics as it enables both up-scaling and optimization of the device performance. In this work, active layers of the conjugated polymer with benzodithiophene units PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F are printed using meniscus guided slot-die coating. 1,8-Diiodooctane (DIO) is added to optimize the power conversion efficiency (PCE). The effect on the inner nanostructure and surface morphology of the material is studied for different solvent additive concentrations with grazing incidence small-angle X-ray scattering (GISAXS), grazing incidence wide-angle X-ray scattering (GIWAXS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Optical properties are studied with photoluminescence (PL), UV/vis absorption spectroscopy, and external quantum efficiency (EQE) measurements and correlated to the corresponding PCEs. The addition of 0.25 vol % DIO enhances the average PCE from 3.5 to 7.9%, whereas at higher concentrations the positive effect is less pronounced. A solar cell performance of 8.95% is obtained for the best printed device processed with an optimum solvent additive concentration. Thus, with the large-scale preparation method printing similarly well working solar cells can be realized as with the spin-coating method.},
keywords = {Foundry Organic, Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
Printing of active layers of high-efficiency organic solar cells and morphology control by processing with varying solvent additive concentrations are important to realize real-world use of bulk-heterojunction photovoltaics as it enables both up-scaling and optimization of the device performance. In this work, active layers of the conjugated polymer with benzodithiophene units PBDB-T-SF and the nonfullerene small molecule acceptor IT-4F are printed using meniscus guided slot-die coating. 1,8-Diiodooctane (DIO) is added to optimize the power conversion efficiency (PCE). The effect on the inner nanostructure and surface morphology of the material is studied for different solvent additive concentrations with grazing incidence small-angle X-ray scattering (GISAXS), grazing incidence wide-angle X-ray scattering (GIWAXS), scanning electron microscopy (SEM), and atomic force microscopy (AFM). Optical properties are studied with photoluminescence (PL), UV/vis absorption spectroscopy, and external quantum efficiency (EQE) measurements and correlated to the corresponding PCEs. The addition of 0.25 vol % DIO enhances the average PCE from 3.5 to 7.9%, whereas at higher concentrations the positive effect is less pronounced. A solar cell performance of 8.95% is obtained for the best printed device processed with an optimum solvent additive concentration. Thus, with the large-scale preparation method printing similarly well working solar cells can be realized as with the spin-coating method.
162.
N Keller, T Sick, N N Bach, A Koszalkowski, J M Rotter, D D Medina, T Bein
Dibenzochrysene enables tightly controlled docking and stabilizes photoexcited states in dual-pore covalent organic frameworks Journal Article
In: Nanoscale, vol. 11, no. 48, pp. 23338-23345, 2019, ISSN: 2040-3364.
Abstract | Links | Tags: Foundry Organic, Molecularly-Functionalized
@article{nokey,
title = {Dibenzochrysene enables tightly controlled docking and stabilizes photoexcited states in dual-pore covalent organic frameworks},
author = {N Keller and T Sick and N N Bach and A Koszalkowski and J M Rotter and D D Medina and T Bein},
url = {http://dx.doi.org/10.1039/C9NR08007D},
doi = {10.1039/C9NR08007D},
issn = {2040-3364},
year = {2019},
date = {2019-11-08},
urldate = {2019-11-08},
journal = {Nanoscale},
volume = {11},
number = {48},
pages = {23338-23345},
abstract = {Covalent organic frameworks (COFs), consisting of covalently connected organic building units, combine attractive features such as crystallinity, open porosity and widely tunable physical properties. For optoelectronic applications, the incorporation of heteroatoms into a 2D COF has the potential to yield desired photophysical properties such as lower band gaps, but can also cause lateral offsets of adjacent layers. Here, we introduce dibenzo[g,p]chrysene (DBC) as a novel building block for the synthesis of highly crystalline and porous 2D dual-pore COFs showing interesting properties for optoelectronic applications. The newly synthesized terephthalaldehyde (TA), biphenyl (Biph), and thienothiophene (TT) DBC-COFs combine conjugation in the a,b-plane with a tight packing of adjacent layers guided through the molecular DBC node serving as specific docking site for successive layers. The resulting DBC-COFs exhibit a hexagonal dual-pore kagome geometry, which is comparable to COFs containing another molecular docking site, namely 4,4′,4′′,4′′′-(ethylene-1,1,2,2-tetrayl)-tetraaniline (ETTA). In this context, the respective interlayer distances decrease from about 4.6 r{A} in ETTA-COFs to about 3.6 r{A} in DBC-COFs, leading to well-defined hexagonally faceted single crystals sized about 50\textendash100 nm. The TT DBC-COF features broad light absorption covering large parts of the visible spectrum, while Biph DBC-COF shows extraordinary excited state lifetimes exceeding 10 ns. In combination with the large number of recently developed linear conjugated building blocks, the new DBC tetra-connected node is expected to enable the synthesis of a large family of highly correlated and ordered 2D COFs with promising optoelectronic properties.},
keywords = {Foundry Organic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
Covalent organic frameworks (COFs), consisting of covalently connected organic building units, combine attractive features such as crystallinity, open porosity and widely tunable physical properties. For optoelectronic applications, the incorporation of heteroatoms into a 2D COF has the potential to yield desired photophysical properties such as lower band gaps, but can also cause lateral offsets of adjacent layers. Here, we introduce dibenzo[g,p]chrysene (DBC) as a novel building block for the synthesis of highly crystalline and porous 2D dual-pore COFs showing interesting properties for optoelectronic applications. The newly synthesized terephthalaldehyde (TA), biphenyl (Biph), and thienothiophene (TT) DBC-COFs combine conjugation in the a,b-plane with a tight packing of adjacent layers guided through the molecular DBC node serving as specific docking site for successive layers. The resulting DBC-COFs exhibit a hexagonal dual-pore kagome geometry, which is comparable to COFs containing another molecular docking site, namely 4,4′,4′′,4′′′-(ethylene-1,1,2,2-tetrayl)-tetraaniline (ETTA). In this context, the respective interlayer distances decrease from about 4.6 Å in ETTA-COFs to about 3.6 Å in DBC-COFs, leading to well-defined hexagonally faceted single crystals sized about 50–100 nm. The TT DBC-COF features broad light absorption covering large parts of the visible spectrum, while Biph DBC-COF shows extraordinary excited state lifetimes exceeding 10 ns. In combination with the large number of recently developed linear conjugated building blocks, the new DBC tetra-connected node is expected to enable the synthesis of a large family of highly correlated and ordered 2D COFs with promising optoelectronic properties.
161.
L Janker, Y Tong, L Polavarapu, J Feldmann, A S Urban, H J Krenner
Real-Time Electron and Hole Transport Dynamics in Halide Perovskite Nanowires Journal Article
In: Nano Letters, vol. 19, no. 12, pp. 8701-8707, 2019, ISSN: 1530-6984.
Links | Tags: Solid-Solid
@article{,
title = {Real-Time Electron and Hole Transport Dynamics in Halide Perovskite Nanowires},
author = {L Janker and Y Tong and L Polavarapu and J Feldmann and A S Urban and H J Krenner},
url = {\<Go to ISI\>://WOS:000502687500044},
doi = {10.1021/acs.nanolett.9b03396},
issn = {1530-6984},
year = {2019},
date = {2019-10-30},
journal = {Nano Letters},
volume = {19},
number = {12},
pages = {8701-8707},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
160.
D Bohm, M Beetz, M Schuster, K Peters, A G Hufnagel, M Doblinger, B Boller, T Bein, D Fattakhova-Rohlfing
In: Advanced Functional Materials, vol. 30, no. 1, 2019, ISSN: 1616-301X.
Links | Tags: Foundry Inorganic
@article{,
title = {Efficient OER Catalyst with Low Ir Volume Density Obtained by Homogeneous Deposition of Iridium Oxide Nanoparticles on Macroporous Antimony-Doped Tin Oxide Support},
author = {D Bohm and M Beetz and M Schuster and K Peters and A G Hufnagel and M Doblinger and B Boller and T Bein and D Fattakhova-Rohlfing},
url = {\<Go to ISI\>://WOS:000492384200001},
doi = {10.1002/adfm.201906670},
issn = {1616-301X},
year = {2019},
date = {2019-10-25},
journal = {Advanced Functional Materials},
volume = {30},
number = {1},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
159.
K Koh, U Sanyal, M S Lee, G H Cheng, M Song, V A Glezakou, Y Liu, D S Li, R Rousseau, O Y Gutierrez, A Karkamkar, M Derewinski, J A Lercher
Electrochemically Tunable Proton-Coupled Electron Transfer in Pd-Catalyzed Benzaldehyde Hydrogenation Journal Article
In: Angewandte Chemie-International Edition, vol. 59, no. 4, pp. 1501-1505, 2019, ISSN: 1433-7851.
Links | Tags: Solid-Liquid
@article{,
title = {Electrochemically Tunable Proton-Coupled Electron Transfer in Pd-Catalyzed Benzaldehyde Hydrogenation},
author = {K Koh and U Sanyal and M S Lee and G H Cheng and M Song and V A Glezakou and Y Liu and D S Li and R Rousseau and O Y Gutierrez and A Karkamkar and M Derewinski and J A Lercher},
url = {\<Go to ISI\>://WOS:000502162100001},
doi = {10.1002/anie.201912241},
issn = {1433-7851},
year = {2019},
date = {2019-10-21},
journal = {Angewandte Chemie-International Edition},
volume = {59},
number = {4},
pages = {1501-1505},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
158.
P Mao, C X Liu, Q Chen, M Han, S A Maier, S Zhang
Broadband SERS detection with disordered plasmonic hybrid aggregates Journal Article
In: Nanoscale, vol. 12, no. 1, pp. 93-102, 2019, ISSN: 2040-3364.
Links | Tags: Foundry Inorganic
@article{,
title = {Broadband SERS detection with disordered plasmonic hybrid aggregates},
author = {P Mao and C X Liu and Q Chen and M Han and S A Maier and S Zhang},
url = {\<Go to ISI\>://WOS:000504106900036},
doi = {10.1039/c9nr08118f},
issn = {2040-3364},
year = {2019},
date = {2019-10-14},
journal = {Nanoscale},
volume = {12},
number = {1},
pages = {93-102},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
157.
S E J Bell, G Charron, E Cortés, J Kneipp, De La M L Chapelle, J Langer, M Procházka, V Tran, S Schlücker
Towards Reliable and Quantitative Surface-Enhanced Raman Scattering (SERS): From Key Parameters to Good Analytical Practice Journal Article
In: Angewandte Chemie International Edition, vol. 59, no. 14, pp. 5454-5462, 2019, ISSN: 1433-7851.
Abstract | Links | Tags: Molecularly-Functionalized
@article{,
title = {Towards Reliable and Quantitative Surface-Enhanced Raman Scattering (SERS): From Key Parameters to Good Analytical Practice},
author = {S E J Bell and G Charron and E Cort\'{e}s and J Kneipp and De La M L Chapelle and J Langer and M Proch\'{a}zka and V Tran and S Schl\"{u}cker},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201908154},
doi = {10.1002/anie.201908154},
issn = {1433-7851},
year = {2019},
date = {2019-10-07},
urldate = {2019-10-07},
journal = {Angewandte Chemie International Edition},
volume = {59},
number = {14},
pages = {5454-5462},
abstract = {Abstract Experimental results obtained in different laboratories world-wide by researchers using surface-enhanced Raman scattering (SERS) can differ significantly. We, an international team of scientists with long-standing expertise in SERS, address this issue from our perspective by presenting considerations on reliable and quantitative SERS. The central idea of this joint effort is to highlight key parameters and pitfalls that are often encountered in the literature. To that end, we provide here a series of recommendations on: a) the characterization of solid and colloidal SERS substrates by correlative electron and optical microscopy and spectroscopy, b) on the determination of the SERS enhancement factor (EF), including suitable Raman reporter/probe molecules, and finally on c) good analytical practice. We hope that both newcomers and specialists will benefit from these recommendations to increase the inter-laboratory comparability of experimental SERS results and further establish SERS as an analytical tool.},
keywords = {Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
Abstract Experimental results obtained in different laboratories world-wide by researchers using surface-enhanced Raman scattering (SERS) can differ significantly. We, an international team of scientists with long-standing expertise in SERS, address this issue from our perspective by presenting considerations on reliable and quantitative SERS. The central idea of this joint effort is to highlight key parameters and pitfalls that are often encountered in the literature. To that end, we provide here a series of recommendations on: a) the characterization of solid and colloidal SERS substrates by correlative electron and optical microscopy and spectroscopy, b) on the determination of the SERS enhancement factor (EF), including suitable Raman reporter/probe molecules, and finally on c) good analytical practice. We hope that both newcomers and specialists will benefit from these recommendations to increase the inter-laboratory comparability of experimental SERS results and further establish SERS as an analytical tool.
156.
J M Rotter, S Weinberger, J Kampmann, T Sick, M Shalom, T Bein, D D Medina
Covalent Organic Framework Films through Electrophoretic Deposition—Creating Efficient Morphologies for Catalysis Journal Article
In: Chemistry of Materials, vol. 31, no. 24, pp. 10008-10016, 2019, ISSN: 0897-4756.
Abstract | Links | Tags: Foundry Organic, Molecularly-Functionalized
@article{nokey,
title = {Covalent Organic Framework Films through Electrophoretic Deposition\textemdashCreating Efficient Morphologies for Catalysis},
author = {J M Rotter and S Weinberger and J Kampmann and T Sick and M Shalom and T Bein and D D Medina},
url = {https://doi.org/10.1021/acs.chemmater.9b02286},
doi = {10.1021/acs.chemmater.9b02286},
issn = {0897-4756},
year = {2019},
date = {2019-10-03},
urldate = {2019-10-03},
journal = {Chemistry of Materials},
volume = {31},
number = {24},
pages = {10008-10016},
abstract = {The ability to grow covalent organic framework (COF) films allows for studying their properties as solid layers and enables the incorporation of these materials into a variety of functional devices. Here, we report on the fabrication of COF films and coatings by electrophoretic deposition (EPD). We demonstrate that the EPD technique is suitable for depositing COFs featuring two- and three-dimensional structures linked by imine or boronate ester bonds, namely, BDT-ETTA COF, COF-300, and COF-5. For the deposition, COF nanoparticle suspensions are prepared by dispersing the as-synthesized bulk materials in solvents with low dielectric constants. Subsequently, two electrodes are immersed into the COF particle suspensions, and upon inducing electric fields ranging from 100 to 900 V cm\textendash1, COFs are deposited as films on the positively charged electrode. Through EPD, within 2 min, large-area films of up to 25 cm2 are obtained on smooth or corrugated surfaces. COF films prepared by EPD feature an inherent textural porosity and tunable thickness, demonstrated from 400 nm to 24 μm. By controlling the deposition parameters such as duration, particle concentration, and applied potential, deposits of precise thickness can be produced. Furthermore, codepositions of different COFs as well as COF/Pt nanoparticles from mixed suspensions are demonstrated. The film morphologies obtained by EPD are shown to be advantageous for catalysis, as demonstrated for sacrificial agent-free photoelectrochemical water reduction. Here, BDT-ETTA COF photocathodes show a strongly increased photocurrent density compared to the respective dense and oriented films. Typical BDT-ETTA COF/Pt nanoparticle hybrid films exhibit photocurrent densities of over 100 μA cm\textendash2. The rapid and scalable deposition of COF particles as films and coatings through EPD is a versatile addition to the toolbox of COF film fabrication techniques, allowing for tailoring COF film architectures for desired functionalities.},
keywords = {Foundry Organic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
The ability to grow covalent organic framework (COF) films allows for studying their properties as solid layers and enables the incorporation of these materials into a variety of functional devices. Here, we report on the fabrication of COF films and coatings by electrophoretic deposition (EPD). We demonstrate that the EPD technique is suitable for depositing COFs featuring two- and three-dimensional structures linked by imine or boronate ester bonds, namely, BDT-ETTA COF, COF-300, and COF-5. For the deposition, COF nanoparticle suspensions are prepared by dispersing the as-synthesized bulk materials in solvents with low dielectric constants. Subsequently, two electrodes are immersed into the COF particle suspensions, and upon inducing electric fields ranging from 100 to 900 V cm–1, COFs are deposited as films on the positively charged electrode. Through EPD, within 2 min, large-area films of up to 25 cm2 are obtained on smooth or corrugated surfaces. COF films prepared by EPD feature an inherent textural porosity and tunable thickness, demonstrated from 400 nm to 24 μm. By controlling the deposition parameters such as duration, particle concentration, and applied potential, deposits of precise thickness can be produced. Furthermore, codepositions of different COFs as well as COF/Pt nanoparticles from mixed suspensions are demonstrated. The film morphologies obtained by EPD are shown to be advantageous for catalysis, as demonstrated for sacrificial agent-free photoelectrochemical water reduction. Here, BDT-ETTA COF photocathodes show a strongly increased photocurrent density compared to the respective dense and oriented films. Typical BDT-ETTA COF/Pt nanoparticle hybrid films exhibit photocurrent densities of over 100 μA cm–2. The rapid and scalable deposition of COF particles as films and coatings through EPD is a versatile addition to the toolbox of COF film fabrication techniques, allowing for tailoring COF film architectures for desired functionalities.
155.
F R Geisenhof, F Winterer, S Wakolbinger, T D Gokus, Y C Durmaz, D Priesack, J Lenz, F Keilmann, K Watanabe, T Taniguchi, R Guerrero-Avilés, M Pelc, A Ayuela, R T Weitz
Anisotropic Strain-Induced Soliton Movement Changes Stacking Order and Band Structure of Graphene Multilayers: Implications for Charge Transport Journal Article
In: ACS Applied Nano Materials, vol. 2, no. 9, pp. 6067-6075, 2019.
Abstract | Links | Tags: Foundry Organic
@article{,
title = {Anisotropic Strain-Induced Soliton Movement Changes Stacking Order and Band Structure of Graphene Multilayers: Implications for Charge Transport},
author = {F R Geisenhof and F Winterer and S Wakolbinger and T D Gokus and Y C Durmaz and D Priesack and J Lenz and F Keilmann and K Watanabe and T Taniguchi and R Guerrero-Avil\'{e}s and M Pelc and A Ayuela and R T Weitz},
url = {https://doi.org/10.1021/acsanm.9b01603},
doi = {10.1021/acsanm.9b01603},
year = {2019},
date = {2019-09-27},
urldate = {2019-09-27},
journal = {ACS Applied Nano Materials},
volume = {2},
number = {9},
pages = {6067-6075},
abstract = {The crystal structure of solid-state matter greatly affects its electronic properties. For example, in multilayer graphene, precise knowledge of the lateral layer arrangement is crucial, since the most stable configurations, Bernal and rhombohedral stacking, exhibit very different electronic properties. Nevertheless, both stacking orders can coexist within one flake, separated by a strain soliton that can host topologically protected states. Clearly, accessing the transport properties of the two stackings and the soliton is of high interest. However, the stacking orders can transform into one another, and therefore, the seemingly trivial question of how reliable electrical contact can be made to either stacking order can a priori not be answered easily. Here, we show that manufacturing metal contacts to multilayer graphene can move solitons by several μm, unidirectionally enlarging Bernal domains due to arising mechanical strain. Furthermore, we also find that during dry transfer of multilayer graphene onto hexagonal boron nitride, such a transformation can happen. Using density functional theory modeling, we corroborate that anisotropic deformations of the multilayer graphene lattice decrease the rhombohedral stacking stability. Finally, we have devised systematics to avoid soliton movement, and how to reliably realize contacts to both stacking configurations, which will aid to reliably access charge transport in both stacking configurations.},
keywords = {Foundry Organic},
pubstate = {published},
tppubtype = {article}
}
The crystal structure of solid-state matter greatly affects its electronic properties. For example, in multilayer graphene, precise knowledge of the lateral layer arrangement is crucial, since the most stable configurations, Bernal and rhombohedral stacking, exhibit very different electronic properties. Nevertheless, both stacking orders can coexist within one flake, separated by a strain soliton that can host topologically protected states. Clearly, accessing the transport properties of the two stackings and the soliton is of high interest. However, the stacking orders can transform into one another, and therefore, the seemingly trivial question of how reliable electrical contact can be made to either stacking order can a priori not be answered easily. Here, we show that manufacturing metal contacts to multilayer graphene can move solitons by several μm, unidirectionally enlarging Bernal domains due to arising mechanical strain. Furthermore, we also find that during dry transfer of multilayer graphene onto hexagonal boron nitride, such a transformation can happen. Using density functional theory modeling, we corroborate that anisotropic deformations of the multilayer graphene lattice decrease the rhombohedral stacking stability. Finally, we have devised systematics to avoid soliton movement, and how to reliably realize contacts to both stacking configurations, which will aid to reliably access charge transport in both stacking configurations.
154.
J Treu, X Xu, K Ott, K Saller, G Abstreiter, J J Finley, G Koblmüller
Optical absorption of composition-tunable InGaAs nanowire arrays Journal Article
In: Nanotechnology, vol. 30, no. 49, pp. 495703, 2019, ISSN: 0957-4484 1361-6528.
Abstract | Links | Tags: Foundry Inorganic, Molecularly-Functionalized
@article{,
title = {Optical absorption of composition-tunable InGaAs nanowire arrays},
author = {J Treu and X Xu and K Ott and K Saller and G Abstreiter and J J Finley and G Koblm\"{u}ller},
url = {http://dx.doi.org/10.1088/1361-6528/ab3ef7},
doi = {10.1088/1361-6528/ab3ef7},
issn = {0957-4484
1361-6528},
year = {2019},
date = {2019-09-20},
journal = {Nanotechnology},
volume = {30},
number = {49},
pages = {495703},
abstract = {InGaAs nanowire (NW) arrays have emerged as important active materials in future photovoltaic and photodetector applications, due to their excellent electronic properties and tunable band gap. Here, we report a systematic investigation of the optical absorption characteristics of composition-tunable vertical InGaAs NW arrays. Using finite-difference time-domain simulations we first study the effect of variable composition (Ga-molar fraction) and NW array geometry (NW diameter, period, fill factor) on the optical generation rate. NWs with typical diameters in the range of ∼100\textendash250 nm lead to generation rates higher than the equivalent bulk case for moderate fill factors (NW period of ∼0.3\textendash0.8 μm), while slightly smaller fill factors and increased diameters are required to maintain high generation rates at increased Ga-molar fraction. The optical absorption was further measured using spectrally resolved ultraviolet\textendashvisible-near-infrared (UV\textendashvis-NIR) spectroscopy on NW arrays transferred to transparent substrates. Interestingly, large variations in Ga-molar fraction (0 \< x(Ga) \< 0.5) have a negligible influence, while minute changes in NW diameter of less than ±20 nm affect the absorption spectra very strongly, leading to pronounced shifts in the peak absorption energies by more than ∼700 meV. These results clearly highlight the much larger sensitivity of the optical absorption behavior to geometric parameters rather than to variations in the electronic band gap of the underlying NW array.},
keywords = {Foundry Inorganic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
InGaAs nanowire (NW) arrays have emerged as important active materials in future photovoltaic and photodetector applications, due to their excellent electronic properties and tunable band gap. Here, we report a systematic investigation of the optical absorption characteristics of composition-tunable vertical InGaAs NW arrays. Using finite-difference time-domain simulations we first study the effect of variable composition (Ga-molar fraction) and NW array geometry (NW diameter, period, fill factor) on the optical generation rate. NWs with typical diameters in the range of ∼100–250 nm lead to generation rates higher than the equivalent bulk case for moderate fill factors (NW period of ∼0.3–0.8 μm), while slightly smaller fill factors and increased diameters are required to maintain high generation rates at increased Ga-molar fraction. The optical absorption was further measured using spectrally resolved ultraviolet–visible-near-infrared (UV–vis-NIR) spectroscopy on NW arrays transferred to transparent substrates. Interestingly, large variations in Ga-molar fraction (0 < x(Ga) < 0.5) have a negligible influence, while minute changes in NW diameter of less than ±20 nm affect the absorption spectra very strongly, leading to pronounced shifts in the peak absorption energies by more than ∼700 meV. These results clearly highlight the much larger sensitivity of the optical absorption behavior to geometric parameters rather than to variations in the electronic band gap of the underlying NW array.
153.
M Mallmann, R Niklaus, T Rackl, M Benz, T G Chau, D Johrendt, J Minár, W Schnick
In: Chem. Eur. J., vol. 25, pp. 1-10, 2019, ISSN: 1521-3765.
Abstract | Links | Tags: Foundry Inorganic
@article{Mallmann2019,
title = {Solid Solutions of Grimm\textendashSommerfeld Analogous Nitride Semiconductors II‐IV‐N2 (II=Mg, Mn, Zn; IV=Si, Ge): Ammonothermal Synthesis and DFT Calculations },
author = {M Mallmann and R Niklaus and T Rackl and M Benz and T G Chau and D Johrendt and J Min\'{a}r and W Schnick},
doi = {https://doi.org/10.1002/chem.201903897},
issn = {1521-3765},
year = {2019},
date = {2019-09-17},
journal = {Chem. Eur. J.},
volume = {25},
pages = {1-10},
abstract = {Grimm\textendashSommerfeld analogous II‐IV‐N2 nitrides such as ZnSiN2, ZnGeN2, and MgGeN2 are promising semiconductor materials for substitution of commonly used (Al,Ga,In)N. Herein, the ammonothermal synthesis of solid solutions of II‐IV‐N2 compounds (II=Mg, Mn, Zn; IV=Si, Ge) having the general formula (IIa1−xIIbx)‐IV‐N2 with x≈0.5 and ab initio DFT calculations of their electronic and optical properties are presented. The ammonothermal reactions were conducted in custom‐built, high‐temperature, high‐pressure autoclaves by using the corresponding elements as starting materials. NaNH2 and KNH2 act as ammonobasic mineralizers that increase the solubility of the reactants in supercritical ammonia. Temperatures between 870 and 1070 K and pressures up to 200 MPa were chosen as reaction conditions. All solid solutions crystallize in wurtzite‐type superstructures with space group Pna21 (no. 33), confirmed by powder XRD. The chemical compositions were analyzed by energy‐dispersive X‐ray spectroscopy. Diffuse reflectance spectroscopy was used for estimation of optical bandgaps of all compounds, which ranged from 2.6 to 3.5 eV (Ge compounds) and from 3.6 to 4.4 eV (Si compounds), and thus demonstrated bandgap tunability between the respective boundary phases. Experimental findings were corroborated by DFT calculations of the electronic structure of pseudorelaxed mixed‐occupancy structures by using the KKR+CPA approach.},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
Grimm–Sommerfeld analogous II‐IV‐N2 nitrides such as ZnSiN2, ZnGeN2, and MgGeN2 are promising semiconductor materials for substitution of commonly used (Al,Ga,In)N. Herein, the ammonothermal synthesis of solid solutions of II‐IV‐N2 compounds (II=Mg, Mn, Zn; IV=Si, Ge) having the general formula (IIa1−xIIbx)‐IV‐N2 with x≈0.5 and ab initio DFT calculations of their electronic and optical properties are presented. The ammonothermal reactions were conducted in custom‐built, high‐temperature, high‐pressure autoclaves by using the corresponding elements as starting materials. NaNH2 and KNH2 act as ammonobasic mineralizers that increase the solubility of the reactants in supercritical ammonia. Temperatures between 870 and 1070 K and pressures up to 200 MPa were chosen as reaction conditions. All solid solutions crystallize in wurtzite‐type superstructures with space group Pna21 (no. 33), confirmed by powder XRD. The chemical compositions were analyzed by energy‐dispersive X‐ray spectroscopy. Diffuse reflectance spectroscopy was used for estimation of optical bandgaps of all compounds, which ranged from 2.6 to 3.5 eV (Ge compounds) and from 3.6 to 4.4 eV (Si compounds), and thus demonstrated bandgap tunability between the respective boundary phases. Experimental findings were corroborated by DFT calculations of the electronic structure of pseudorelaxed mixed‐occupancy structures by using the KKR+CPA approach.
152.
K Hübner, M Pilo-Pais, F Selbach, T Liedl, P Tinnefeld, F D Stefani, G P Acuna
Directing Single-Molecule Emission with DNA Origami-Assembled Optical Antennas Journal Article
In: Nano Letters, vol. 19, no. 9, pp. 6629-6634, 2019, ISSN: 1530-6984.
Links | Tags: Foundry Inorganic, Foundry Organic, Molecularly-Functionalized
@article{,
title = {Directing Single-Molecule Emission with DNA Origami-Assembled Optical Antennas},
author = {K H\"{u}bner and M Pilo-Pais and F Selbach and T Liedl and P Tinnefeld and F D Stefani and G P Acuna},
url = {https://doi.org/10.1021/acs.nanolett.9b02886},
doi = {10.1021/acs.nanolett.9b02886},
issn = {1530-6984},
year = {2019},
date = {2019-09-11},
urldate = {2019-09-11},
journal = {Nano Letters},
volume = {19},
number = {9},
pages = {6629-6634},
keywords = {Foundry Inorganic, Foundry Organic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
151.
P I Scheurle, A Mähringer, A C Jakowetz, P Hosseini, A F Richter, G Wittstock, D D Medina, T Bein
A highly crystalline anthracene-based MOF-74 series featuring electrical conductivity and luminescence Journal Article
In: Nanoscale, vol. 11, no. 43, pp. 20949-20955, 2019, ISSN: 2040-3364.
Abstract | Links | Tags: Foundry Inorganic, Molecularly-Functionalized
@article{nokey,
title = {A highly crystalline anthracene-based MOF-74 series featuring electrical conductivity and luminescence},
author = {P I Scheurle and A M\"{a}hringer and A C Jakowetz and P Hosseini and A F Richter and G Wittstock and D D Medina and T Bein},
url = {http://dx.doi.org/10.1039/C9NR05431F},
doi = {10.1039/C9NR05431F},
issn = {2040-3364},
year = {2019},
date = {2019-09-10},
journal = {Nanoscale},
volume = {11},
number = {43},
pages = {20949-20955},
abstract = {Recently, a small group of metal\textendashorganic frameworks (MOFs) has been discovered featuring substantial charge transport properties and electrical conductivity, hence promising to broaden the scope of potential MOF applications in fields such as batteries, fuel cells and supercapacitors. In combination with light emission, electroactive MOFs are intriguing candidates for chemical sensing and optoelectronic applications. Here, we incorporated anthracene-based building blocks into the MOF-74 topology with five different divalent metal ions, that is, Zn2+, Mg2+, Ni2+, Co2+ and Mn2+, resulting in a series of highly crystalline MOFs, coined ANMOF-74(M). This series of MOFs features substantial photoluminescence, with ANMOF-74(Zn) emitting across the whole visible spectrum. The materials moreover combine this photoluminescence with high surface areas and electrical conductivity. Compared to the original MOF-74 materials constructed from 2,5-dihydroxy terephthalic acid and the same metal ions Zn2+, Mg2+, Ni2+, Co2+ and Mn2+, we observed a conductivity enhancement of up to six orders of magnitude. Our results point towards the importance of building block design and the careful choice of the embedded MOF topology for obtaining materials with desired properties such as photoluminescence and electrical conductivity.},
keywords = {Foundry Inorganic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
Recently, a small group of metal–organic frameworks (MOFs) has been discovered featuring substantial charge transport properties and electrical conductivity, hence promising to broaden the scope of potential MOF applications in fields such as batteries, fuel cells and supercapacitors. In combination with light emission, electroactive MOFs are intriguing candidates for chemical sensing and optoelectronic applications. Here, we incorporated anthracene-based building blocks into the MOF-74 topology with five different divalent metal ions, that is, Zn2+, Mg2+, Ni2+, Co2+ and Mn2+, resulting in a series of highly crystalline MOFs, coined ANMOF-74(M). This series of MOFs features substantial photoluminescence, with ANMOF-74(Zn) emitting across the whole visible spectrum. The materials moreover combine this photoluminescence with high surface areas and electrical conductivity. Compared to the original MOF-74 materials constructed from 2,5-dihydroxy terephthalic acid and the same metal ions Zn2+, Mg2+, Ni2+, Co2+ and Mn2+, we observed a conductivity enhancement of up to six orders of magnitude. Our results point towards the importance of building block design and the careful choice of the embedded MOF topology for obtaining materials with desired properties such as photoluminescence and electrical conductivity.
150.
L Song, M Rawolle, N Hohn, J S Gutmann, H Frielinghaus, P Müller-Buschbaum
In Situ Monitoring Mesoscopic Deformation of Nanostructured Porous Titania Films Caused by Water Ingression Journal Article
In: ACS Applied Materials & Interfaces, vol. 11, no. 35, pp. 32552-32558, 2019, ISSN: 1944-8244.
Abstract | Links | Tags: Foundry Inorganic, Solid-Liquid
@article{nokey,
title = {In Situ Monitoring Mesoscopic Deformation of Nanostructured Porous Titania Films Caused by Water Ingression},
author = {L Song and M Rawolle and N Hohn and J S Gutmann and H Frielinghaus and P M\"{u}ller-Buschbaum},
url = {https://doi.org/10.1021/acsami.9b10750},
doi = {10.1021/acsami.9b10750},
issn = {1944-8244},
year = {2019},
date = {2019-09-04},
journal = {ACS Applied Materials \& Interfaces},
volume = {11},
number = {35},
pages = {32552-32558},
abstract = {Nanostructured porous titania films are used in many energy-related applications. In this work, the temporal evolution of the mesoscopic deformation of mesoporous titania films synthesized via block copolymer-assisted sol\textendashgel chemistry is investigated with in situ grazing incidence small-angle neutron scattering (GISANS) during exposure to D2O vapor. Two types of mesoporous titania films are compared, which have a different degree of structural stability, depending on the applied annealing temperature (400 °C vs 600 °C) in a nitrogen atmosphere. Water ingression causes a gradual structure deformation in terms of decreasing center-to-center distances and broadening of the size distribution of the titania nanostructures. Based on the evolution of the mesopore size obtained from in situ GISANS measurements, the results show that structures synthesized at lower temperature undergo a stronger deformation because of the lower elastic modulus originating from larger pores, despite having a higher degree of order.},
keywords = {Foundry Inorganic, Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
Nanostructured porous titania films are used in many energy-related applications. In this work, the temporal evolution of the mesoscopic deformation of mesoporous titania films synthesized via block copolymer-assisted sol–gel chemistry is investigated with in situ grazing incidence small-angle neutron scattering (GISANS) during exposure to D2O vapor. Two types of mesoporous titania films are compared, which have a different degree of structural stability, depending on the applied annealing temperature (400 °C vs 600 °C) in a nitrogen atmosphere. Water ingression causes a gradual structure deformation in terms of decreasing center-to-center distances and broadening of the size distribution of the titania nanostructures. Based on the evolution of the mesopore size obtained from in situ GISANS measurements, the results show that structures synthesized at lower temperature undergo a stronger deformation because of the lower elastic modulus originating from larger pores, despite having a higher degree of order.
149.
S Lee, J Kim, H Yang, E Cortés, S Kang, S W Han
Particle-in-a-Frame Nanostructures with Interior Nanogaps Journal Article
In: Angewandte Chemie International Edition, vol. 58, no. 44, pp. 15890-15894, 2019, ISSN: 1433-7851.
Abstract | Links | Tags: Molecularly-Functionalized, Solid-Solid
@article{nokey,
title = {Particle-in-a-Frame Nanostructures with Interior Nanogaps},
author = {S Lee and J Kim and H Yang and E Cort\'{e}s and S Kang and S W Han},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/anie.201908291},
doi = {https://doi.org/10.1002/anie.201908291},
issn = {1433-7851},
year = {2019},
date = {2019-09-03},
journal = {Angewandte Chemie International Edition},
volume = {58},
number = {44},
pages = {15890-15894},
abstract = {Abstract Designing plasmonic hollow colloids with small interior nanogaps would allow structural properties to be exploited that are normally linked to an ensemble of particles but within a single nanoparticle. Now, a synthetic approach for constructing a new class of frame nanostructures is presented. Fine control over the galvanic replacement reaction of Ag nanoprisms with Au precursors gave unprecedented Au particle-in-a-frame nanostructures with well-defined sub-2 nm interior nanogaps. The prepared nanostructures exhibited superior performance in applications, such as plasmonic sensing and surface-enhanced Raman scattering, over their solid nanostructure and nanoframe counterparts. This highlights the benefit of their interior hot spots, which can highly promote and maximize the electric field confinement within a single nanostructure.},
keywords = {Molecularly-Functionalized, Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
Abstract Designing plasmonic hollow colloids with small interior nanogaps would allow structural properties to be exploited that are normally linked to an ensemble of particles but within a single nanoparticle. Now, a synthetic approach for constructing a new class of frame nanostructures is presented. Fine control over the galvanic replacement reaction of Ag nanoprisms with Au precursors gave unprecedented Au particle-in-a-frame nanostructures with well-defined sub-2 nm interior nanogaps. The prepared nanostructures exhibited superior performance in applications, such as plasmonic sensing and surface-enhanced Raman scattering, over their solid nanostructure and nanoframe counterparts. This highlights the benefit of their interior hot spots, which can highly promote and maximize the electric field confinement within a single nanostructure.
148.
J Langer, De D J Aberasturi, J Aizpurua, R A Alvarez-Puebla, B Auguie, J J Baumberg, G C Bazan, S E J Bell, A Boisen, A G Brolo, J Choo, D Cialla-May, V Deckert, L Fabris, K Faulds, De F J G Abajo, R Goodacre, D Graham, A J Haes, C L Haynes, C Huck, T Itoh, M Ka, J Kneipp, N A Kotov, H Kuang, Le E C Ru, H K Lee, J F Li, X Y Ling, S A Maier, T Mayerhofer, M Moskovits, K Murakoshi, J M Nam, S Nie, Y Ozaki, I Pastoriza-Santos, J Perez-Juste, J Popp, A Pucci, S Reich, B Ren, G C Schatz, T Shegai, S Schlucker, L L Tay, K G Thomas, Z Q Tian, Van R P Duyne, T Vo-Dinh, Y Wang, K A Willets, C Xu, H Xu, Y Xu, Y S Yamamoto, B Zhao, L M Liz-Marzan
Present and Future of Surface-Enhanced Raman Scattering Journal Article
In: Acs Nano, vol. 14, no. 1, pp. 28-117, 2019, ISSN: 1936-0851.
Links | Tags: Foundry Inorganic
@article{,
title = {Present and Future of Surface-Enhanced Raman Scattering},
author = {J Langer and De D J Aberasturi and J Aizpurua and R A Alvarez-Puebla and B Auguie and J J Baumberg and G C Bazan and S E J Bell and A Boisen and A G Brolo and J Choo and D Cialla-May and V Deckert and L Fabris and K Faulds and De F J G Abajo and R Goodacre and D Graham and A J Haes and C L Haynes and C Huck and T Itoh and M Ka and J Kneipp and N A Kotov and H Kuang and Le E C Ru and H K Lee and J F Li and X Y Ling and S A Maier and T Mayerhofer and M Moskovits and K Murakoshi and J M Nam and S Nie and Y Ozaki and I Pastoriza-Santos and J Perez-Juste and J Popp and A Pucci and S Reich and B Ren and G C Schatz and T Shegai and S Schlucker and L L Tay and K G Thomas and Z Q Tian and Van R P Duyne and T Vo-Dinh and Y Wang and K A Willets and C Xu and H Xu and Y Xu and Y S Yamamoto and B Zhao and L M Liz-Marzan},
url = {\<Go to ISI\>://WOS:000510531500006},
doi = {10.1021/acsnano.9b04224},
issn = {1936-0851},
year = {2019},
date = {2019-09-03},
journal = {Acs Nano},
volume = {14},
number = {1},
pages = {28-117},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
147.
S Watzele, P Hauenstein, Y C Liang, S Xue, J Fichtner, B Garlyyev, D Scieszka, F Claude, F Maillard, A S Bandarenka
Determination of Electroactive Surface Area of Ni-, Co-, Fe-, and Ir-Based Oxide Electrocatalysts Journal Article
In: Acs Catalysis, vol. 9, no. 10, pp. 9222-9230, 2019, ISSN: 2155-5435.
Links | Tags: Solid-Liquid
@article{,
title = {Determination of Electroactive Surface Area of Ni-, Co-, Fe-, and Ir-Based Oxide Electrocatalysts},
author = {S Watzele and P Hauenstein and Y C Liang and S Xue and J Fichtner and B Garlyyev and D Scieszka and F Claude and F Maillard and A S Bandarenka},
url = {\<Go to ISI\>://WOS:000489204000043},
doi = {10.1021/acscatal.9b02006},
issn = {2155-5435},
year = {2019},
date = {2019-08-30},
journal = {Acs Catalysis},
volume = {9},
number = {10},
pages = {9222-9230},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
146.
B S Wei, D C Zhang, Y H Chen, A W Lei, P Knochel
Preparation of Polyfunctional Biaryl Derivatives by Cyclolanthanation of 2-Bromobiaryls and Heterocyclic Analogues Using nBu(2)LaCl.4 LiCl Journal Article
In: Angewandte Chemie-International Edition, vol. 58, no. 44, pp. 15631-15635, 2019, ISSN: 1433-7851.
Links | Tags: Foundry Organic
@article{,
title = {Preparation of Polyfunctional Biaryl Derivatives by Cyclolanthanation of 2-Bromobiaryls and Heterocyclic Analogues Using nBu(2)LaCl.4 LiCl},
author = {B S Wei and D C Zhang and Y H Chen and A W Lei and P Knochel},
url = {\<Go to ISI\>://WOS:000487102700001},
doi = {10.1002/anie.201908046},
issn = {1433-7851},
year = {2019},
date = {2019-08-28},
journal = {Angewandte Chemie-International Edition},
volume = {58},
number = {44},
pages = {15631-15635},
keywords = {Foundry Organic},
pubstate = {published},
tppubtype = {article}
}
145.
G Grinblat, I Abdelwahab, M P Nielsen, P Dichtl, K Leng, R F Oulton, K P Loh, S A Maier
Ultrafast All-Optical Modulation in 2D Hybrid Perovskites Journal Article
In: ACS Nano, vol. 13, no. 8, pp. 9504-9510, 2019, ISSN: 1936-0851.
Links | Tags: Solid-Solid
@article{,
title = {Ultrafast All-Optical Modulation in 2D Hybrid Perovskites},
author = {G Grinblat and I Abdelwahab and M P Nielsen and P Dichtl and K Leng and R F Oulton and K P Loh and S A Maier},
url = {https://doi.org/10.1021/acsnano.9b04483},
doi = {10.1021/acsnano.9b04483},
issn = {1936-0851},
year = {2019},
date = {2019-08-27},
journal = {ACS Nano},
volume = {13},
number = {8},
pages = {9504-9510},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
144.
C A Walenta, M Tschurl, U Heiz
Introducing catalysis in photocatalysis: What can be understood from surface science studies of alcohol photoreforming on TiO2 Journal Article
In: Journal of Physics-Condensed Matter, vol. 31, no. 47, 2019, ISSN: 0953-8984.
Links | Tags: Molecularly-Functionalized
@article{,
title = {Introducing catalysis in photocatalysis: What can be understood from surface science studies of alcohol photoreforming on TiO2},
author = {C A Walenta and M Tschurl and U Heiz},
url = {\<Go to ISI\>://WOS:000482603900001},
doi = {10.1088/1361-648X/ab351a},
issn = {0953-8984},
year = {2019},
date = {2019-08-23},
urldate = {2019-08-23},
journal = {Journal of Physics-Condensed Matter},
volume = {31},
number = {47},
keywords = {Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
143.
L Polavarapu, H Huang, Y Li, Y Tong, E-P Yao, M Döblinger, M W Feil, A F Richter, A L Rogach, J Feldmann
Spontaneous Crystallization of Perovskite Nanocrystals in Nonpolar Organic Solvents: A Versatile Approach for their Shape-controlled Synthesis Journal Article
In: Angewandte Chemie International Edition, vol. 0, no. ja, 2019, ISSN: 1433-7851.
Abstract | Links | Tags: Solid-Solid
@article{,
title = {Spontaneous Crystallization of Perovskite Nanocrystals in Nonpolar Organic Solvents: A Versatile Approach for their Shape-controlled Synthesis},
author = {L Polavarapu and H Huang and Y Li and Y Tong and E-P Yao and M D\"{o}blinger and M W Feil and A F Richter and A L Rogach and J Feldmann},
url = {https://doi.org/10.1002/anie.201906862},
doi = {10.1002/anie.201906862},
issn = {1433-7851},
year = {2019},
date = {2019-08-21},
journal = {Angewandte Chemie International Edition},
volume = {0},
number = {ja},
abstract = {The growing demand of perovskite nanocrystals (NCs) for various applications has stimulated great research interest in the development of facile synthetic methods. They have often been synthesized by either ligand assisted reprecipitation (LARP) at room temperature or by hot-injection at high temperatures and inert atmosphere. However, the use of polar solvents in LARP effects their stability. Herein, we report on the spontaneous crystallization of perovskite nanocrystals in nonpolar organic media at ambient conditions by simple mixing of precursor-ligand complexes without applying any external stimuli. The shape of the NCs can be controlled from nanocubes to nanoplatelets by varying the ratio of monovalent (e.g. formamidinium+ (FA+) and Cs+) to divalent (Pb2+) cation-ligand complexes. The precursor-ligand complexes are stable for months, and thus perovskite NCs can be readily prepared prior to use. Moreover, we show that this versatile synthetic process is scalable and can be generally applicable for perovskite NCs of different compositions.},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
The growing demand of perovskite nanocrystals (NCs) for various applications has stimulated great research interest in the development of facile synthetic methods. They have often been synthesized by either ligand assisted reprecipitation (LARP) at room temperature or by hot-injection at high temperatures and inert atmosphere. However, the use of polar solvents in LARP effects their stability. Herein, we report on the spontaneous crystallization of perovskite nanocrystals in nonpolar organic media at ambient conditions by simple mixing of precursor-ligand complexes without applying any external stimuli. The shape of the NCs can be controlled from nanocubes to nanoplatelets by varying the ratio of monovalent (e.g. formamidinium+ (FA+) and Cs+) to divalent (Pb2+) cation-ligand complexes. The precursor-ligand complexes are stable for months, and thus perovskite NCs can be readily prepared prior to use. Moreover, we show that this versatile synthetic process is scalable and can be generally applicable for perovskite NCs of different compositions.
142.
J Liu, S Hou, W Li, A S Bandarenka, R A Fischer
Recent Approaches to Design Electrocatalysts Based on Metal–Organic Frameworks and Their Derivatives Journal Article
In: Chemistry – An Asian Journal, vol. 14, no. 20, pp. 3474-3501, 2019, ISSN: 1861-4728.
Abstract | Links | Tags: Foundry Inorganic
@article{,
title = {Recent Approaches to Design Electrocatalysts Based on Metal\textendashOrganic Frameworks and Their Derivatives},
author = {J Liu and S Hou and W Li and A S Bandarenka and R A Fischer},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/asia.201900748},
doi = {https://doi.org/10.1002/asia.201900748},
issn = {1861-4728},
year = {2019},
date = {2019-08-20},
journal = {Chemistry \textendash An Asian Journal},
volume = {14},
number = {20},
pages = {3474-3501},
abstract = {Abstract Rational design and synthesis of efficient electrocatalysts are important constituents in addressing the currently growing provision issues. Typical reactions, which are important to catalyze in this respect, include CO2 reduction, the hydrogen and oxygen evolution reactions as well as the oxygen reduction reaction. The most efficient catalysts known up-to-date for these processes usually contain expensive and scarce elements, substantially impeding implementation of such electrocatalysts at a larger scale. Metal-organic frameworks (MOFs) and their derivatives containing affordable components and building blocks, as an emerging class of porous functional materials, have been recently attracting a great attention thanks to their tunable structure and composition together with high surface area, just to name a few. Up to now, several MOFs and MOF-derivatives have been reported as electrode materials for the energy-related electrocatalytic application. In this review article, we summarize and analyze current approaches to design such materials. The design strategies to improve the Faradaic efficiency and selectivity of these catalysts are discussed. Last but not least, we discuss some novel strategies to enhance the conductivity, chemical stability and efficiency of MOF-derived electrocatalysts.},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
Abstract Rational design and synthesis of efficient electrocatalysts are important constituents in addressing the currently growing provision issues. Typical reactions, which are important to catalyze in this respect, include CO2 reduction, the hydrogen and oxygen evolution reactions as well as the oxygen reduction reaction. The most efficient catalysts known up-to-date for these processes usually contain expensive and scarce elements, substantially impeding implementation of such electrocatalysts at a larger scale. Metal-organic frameworks (MOFs) and their derivatives containing affordable components and building blocks, as an emerging class of porous functional materials, have been recently attracting a great attention thanks to their tunable structure and composition together with high surface area, just to name a few. Up to now, several MOFs and MOF-derivatives have been reported as electrode materials for the energy-related electrocatalytic application. In this review article, we summarize and analyze current approaches to design such materials. The design strategies to improve the Faradaic efficiency and selectivity of these catalysts are discussed. Last but not least, we discuss some novel strategies to enhance the conductivity, chemical stability and efficiency of MOF-derived electrocatalysts.
141.
J Gargiulo, R Berté, Y Li, S A Maier, E Cortés
From Optical to Chemical Hot Spots in Plasmonics Journal Article
In: Accounts of Chemical Research, 2019, ISSN: 0001-4842.
Links | Tags: Molecularly-Functionalized
@article{,
title = {From Optical to Chemical Hot Spots in Plasmonics},
author = {J Gargiulo and R Bert\'{e} and Y Li and S A Maier and E Cort\'{e}s},
url = {https://doi.org/10.1021/acs.accounts.9b00234},
doi = {10.1021/acs.accounts.9b00234},
issn = {0001-4842},
year = {2019},
date = {2019-08-20},
journal = {Accounts of Chemical Research},
keywords = {Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
140.
P Marzak, P Moser, S Schreier, D Scieszka, J Yun, O Schneider, A S Bandarenka
A Cell for Controllable Formation and In Operando Electrochemical Characterization of Intercalation Materials for Aqueous Metal-Ion Batteries Journal Article
In: Small Methods, vol. 3, pp. 1900445, 2019, ISSN: 2366-9608.
Links | Tags: Solid-Liquid
@article{,
title = {A Cell for Controllable Formation and In Operando Electrochemical Characterization of Intercalation Materials for Aqueous Metal-Ion Batteries},
author = {P Marzak and P Moser and S Schreier and D Scieszka and J Yun and O Schneider and A S Bandarenka},
url = {\<Go to ISI\>://WOS:000481312300001},
doi = {10.1002/smtd.201900445},
issn = {2366-9608},
year = {2019},
date = {2019-08-16},
urldate = {2019-08-16},
journal = {Small Methods},
volume = {3},
pages = {1900445},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
139.
S D Gennaro, Y Li, S A Maier, R F Oulton
Nonlinear Pancharatnam−Berry Phase Metasurfaces beyond the Dipole Approximation Journal Article
In: ACS Photonics, 2019.
Links | Tags: Solid-Solid
@article{,
title = {Nonlinear Pancharatnam−Berry Phase Metasurfaces beyond the Dipole Approximation},
author = {S D Gennaro and Y Li and S A Maier and R F Oulton},
url = {https://doi.org/10.1021/acsphotonics.9b00877},
doi = {10.1021/acsphotonics.9b00877},
year = {2019},
date = {2019-08-12},
journal = {ACS Photonics},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
138.
H Schlomberg, J Kröger, G Savasci, M Terban, S Bette, I Moudrakovski, V Duppel, F Podjaski, R Siegel, J Senker, R Dinnebier, C Ochsenfeld, B V Lotsch
Structural Insights into Poly(Heptazine Imides): A Light Storing Carbon Nitride Material for Dark Photocatalysis Journal Article
In: Chemistry of Materials, vol. 31, 2019.
Links | Tags: Foundry Organic
@article{,
title = {Structural Insights into Poly(Heptazine Imides): A Light Storing Carbon Nitride Material for Dark Photocatalysis},
author = {H Schlomberg and J Kr\"{o}ger and G Savasci and M Terban and S Bette and I Moudrakovski and V Duppel and F Podjaski and R Siegel and J Senker and R Dinnebier and C Ochsenfeld and B V Lotsch},
doi = {10.1021/acs.chemmater.9b02199},
year = {2019},
date = {2019-08-12},
journal = {Chemistry of Materials},
volume = {31},
keywords = {Foundry Organic},
pubstate = {published},
tppubtype = {article}
}
137.
K Kratzl, T Kratky, S Gunther, O Tomanec, R Zboril, J Michalicka, J M Macak, M Cokoja, R A Fischer
Generation and Stabilization of Small Platinum Clusters Pt-12 +/- x Inside a Metal-Organic Framework Journal Article
In: Journal of the American Chemical Society, vol. 141, no. 35, pp. 13962-13969, 2019, ISSN: 0002-7863.
Links | Tags: Molecularly-Functionalized
@article{,
title = {Generation and Stabilization of Small Platinum Clusters Pt-12 +/- x Inside a Metal-Organic Framework},
author = {K Kratzl and T Kratky and S Gunther and O Tomanec and R Zboril and J Michalicka and J M Macak and M Cokoja and R A Fischer},
url = {\<Go to ISI\>://WOS:000484828900039},
doi = {10.1021/jacs.9b07083},
issn = {0002-7863},
year = {2019},
date = {2019-08-09},
journal = {Journal of the American Chemical Society},
volume = {141},
number = {35},
pages = {13962-13969},
keywords = {Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
136.
T Wu, K Li, N Zhang, J Xia, Q Zeng, X Wen, U S Dinish, M Olivo, Z Shen, Z Liu, Q Xiong, Y Luo, S A Maier, L Wei
Ultrawideband Surface Enhanced Raman Scattering in Hybrid Graphene Fragmented-Gold Substrates via Cold-Etching Journal Article
In: Advanced Optical Materials, vol. 0, no. 0, pp. 1900905, 2019, ISSN: 2195-1071.
Abstract | Links | Tags: Solid-Solid
@article{,
title = {Ultrawideband Surface Enhanced Raman Scattering in Hybrid Graphene Fragmented-Gold Substrates via Cold-Etching},
author = {T Wu and K Li and N Zhang and J Xia and Q Zeng and X Wen and U S Dinish and M Olivo and Z Shen and Z Liu and Q Xiong and Y Luo and S A Maier and L Wei},
url = {https://doi.org/10.1002/adom.201900905},
doi = {10.1002/adom.201900905},
issn = {2195-1071},
year = {2019},
date = {2019-08-08},
journal = {Advanced Optical Materials},
volume = {0},
number = {0},
pages = {1900905},
abstract = {Abstract Conventional surface enhanced Raman scattering (SERS) substrates are well known for their supreme electromagnetic enhancements and ultrahigh sensitivity in detecting molecules at low concentrations. However, large-area quasi-uniform SERS substrates are difficult to achieve by standard top-down nanofabrication techniques, resulting in fluctuant SERS responses and unwanted fluorescence interferences, which severely limit their performances in practical applications. To tackle these challenges, a large-scale quasi-uniform hybrid graphene fragmented-gold substrate with stable and reproducible SERS readouts as well as large enhancement factors over an ultrawideband spectrum is developed. The hybrid substrate is fabricated via cold-etching through a controllable break up of a thin gold film followed by a graphene transfer. The stimulated localized surface plasmons interact strongly with the graphene layer, leading to spectrally and spatially modified graphene-mediated surface enhanced Raman scattering (GSERS) responses. The perfect monolayer graphene of the GSERS substrate prevents adsorbates from the atmosphere and direct contact between bonded molecules and gold, thus reducing the catalytic activity of gold and producing clean, stable, and reproducible molecular Raman signals. The easy-fabricated hybrid GSERS substrate not only provides a powerful platform to collect robust molecular Raman spectra but also shows great potentials for future mass production of high-performance nanophotonic devices.},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
Abstract Conventional surface enhanced Raman scattering (SERS) substrates are well known for their supreme electromagnetic enhancements and ultrahigh sensitivity in detecting molecules at low concentrations. However, large-area quasi-uniform SERS substrates are difficult to achieve by standard top-down nanofabrication techniques, resulting in fluctuant SERS responses and unwanted fluorescence interferences, which severely limit their performances in practical applications. To tackle these challenges, a large-scale quasi-uniform hybrid graphene fragmented-gold substrate with stable and reproducible SERS readouts as well as large enhancement factors over an ultrawideband spectrum is developed. The hybrid substrate is fabricated via cold-etching through a controllable break up of a thin gold film followed by a graphene transfer. The stimulated localized surface plasmons interact strongly with the graphene layer, leading to spectrally and spatially modified graphene-mediated surface enhanced Raman scattering (GSERS) responses. The perfect monolayer graphene of the GSERS substrate prevents adsorbates from the atmosphere and direct contact between bonded molecules and gold, thus reducing the catalytic activity of gold and producing clean, stable, and reproducible molecular Raman signals. The easy-fabricated hybrid GSERS substrate not only provides a powerful platform to collect robust molecular Raman spectra but also shows great potentials for future mass production of high-performance nanophotonic devices.
135.
D Graf, M Beuerle, C Ochsenfeld
Low-Scaling Self-Consistent Minimization of a Density Matrix Based Random Phase Approximation Method in the Atomic Orbital Space Journal Article
In: Journal of Chemical Theory and Computation, vol. 15, no. 8, pp. 4468-4477, 2019, ISSN: 1549-9618.
Links | Tags: Foundry Inorganic
@article{,
title = {Low-Scaling Self-Consistent Minimization of a Density Matrix Based Random Phase Approximation Method in the Atomic Orbital Space},
author = {D Graf and M Beuerle and C Ochsenfeld},
url = {\<Go to ISI\>://WOS:000480826800016},
doi = {10.1021/acs.jctc.9b00444},
issn = {1549-9618},
year = {2019},
date = {2019-08-01},
journal = {Journal of Chemical Theory and Computation},
volume = {15},
number = {8},
pages = {4468-4477},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}
134.
M Blauth, G Vest, S L Rosemary, M Prechtl, O Hartwig, M Jurgensen, M Kaniber, A V Stier, J J Finley
Ultracompact Photodetection in Atomically Thin MoSe2 Journal Article
In: Acs Photonics, vol. 6, no. 8, pp. 1902-1909, 2019, ISSN: 2330-4022.
Links | Tags: Foundry Inorganic, Solid-Solid
@article{,
title = {Ultracompact Photodetection in Atomically Thin MoSe2},
author = {M Blauth and G Vest and S L Rosemary and M Prechtl and O Hartwig and M Jurgensen and M Kaniber and A V Stier and J J Finley},
url = {\<Go to ISI\>://WOS:000482545400012},
doi = {10.1021/acsphotonics.9b00785},
issn = {2330-4022},
year = {2019},
date = {2019-07-30},
journal = {Acs Photonics},
volume = {6},
number = {8},
pages = {1902-1909},
keywords = {Foundry Inorganic, Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
133.
B Garlyyev, J Fichtner, O Pique, O Schneider, A S Bandarenka, F Calle-Vallejo
Revealing the nature of active sites in electrocatalysis Journal Article
In: Chemical Science, vol. 10, no. 35, pp. 8060-8075, 2019, ISSN: 2041-6520.
Links | Tags: Solid-Liquid
@article{,
title = {Revealing the nature of active sites in electrocatalysis},
author = {B Garlyyev and J Fichtner and O Pique and O Schneider and A S Bandarenka and F Calle-Vallejo},
url = {\<Go to ISI\>://WOS:000486045200001},
doi = {10.1039/c9sc02654a},
issn = {2041-6520},
year = {2019},
date = {2019-07-23},
journal = {Chemical Science},
volume = {10},
number = {35},
pages = {8060-8075},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
132.
V A Hintermayr, C Lampe, M Low, J Roemer, W Vanderlinden, M Gramlich, A X Bohm, C Sattler, B Nickel, T Lohmuller, A S Urban
Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation Journal Article
In: Nano Letters, vol. 19, no. 8, pp. 4928-4933, 2019, ISSN: 1530-6984.
Links | Tags: Foundry Inorganic, Solid-Solid
@article{,
title = {Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation},
author = {V A Hintermayr and C Lampe and M Low and J Roemer and W Vanderlinden and M Gramlich and A X Bohm and C Sattler and B Nickel and T Lohmuller and A S Urban},
url = {\<Go to ISI\>://WOS:000481563800015},
doi = {10.1021/acs.nanolett.9b00982},
issn = {1530-6984},
year = {2019},
date = {2019-07-19},
journal = {Nano Letters},
volume = {19},
number = {8},
pages = {4928-4933},
keywords = {Foundry Inorganic, Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
131.
J A Nogueira, K Krischer, H Varela
Coupled Dynamics of Anode and Cathode in Proton-Exchange Membrane Fuel Cells Journal Article
In: Chemphyschem, vol. 20, no. 22, pp. 3081-3088, 2019, ISSN: 1439-4235.
Links | Tags: Solid-Liquid
@article{,
title = {Coupled Dynamics of Anode and Cathode in Proton-Exchange Membrane Fuel Cells},
author = {J A Nogueira and K Krischer and H Varela},
url = {\<Go to ISI\>://WOS:000478934200001},
doi = {10.1002/cphc.201900531},
issn = {1439-4235},
year = {2019},
date = {2019-07-19},
journal = {Chemphyschem},
volume = {20},
number = {22},
pages = {3081-3088},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
130.
L V Besteiro, P Yu, Z M Wang, A W Holleitner, G V Hartland, G P Wiederrecht, A O Govorov
The fast and the furious: Ultrafast hot electrons in plasmonic metastructures. Size and structure matter Journal Article
In: Nano Today, vol. 27, pp. 120-145, 2019, ISSN: 1748-0132.
Links | Tags: Solid-Solid
@article{,
title = {The fast and the furious: Ultrafast hot electrons in plasmonic metastructures. Size and structure matter},
author = {L V Besteiro and P Yu and Z M Wang and A W Holleitner and G V Hartland and G P Wiederrecht and A O Govorov},
url = {\<Go to ISI\>://WOS:000482526300011},
doi = {10.1016/j.nantod.2019.05.006},
issn = {1748-0132},
year = {2019},
date = {2019-07-18},
journal = {Nano Today},
volume = {27},
pages = {120-145},
keywords = {Solid-Solid},
pubstate = {published},
tppubtype = {article}
}
129.
A Bourgund, B A J Lechner, M Meier, C Franchini, G S Parkinson, U Heiz, F Esch
Influence of Local Defects on the Dynamics of O-H Bond Breaking and Formation on a Magnetite Surface Journal Article
In: Journal of Physical Chemistry C, vol. 123, no. 32, pp. 19742-19747, 2019, ISSN: 1932-7447.
Links | Tags: Foundry Inorganic, Molecularly-Functionalized
@article{,
title = {Influence of Local Defects on the Dynamics of O-H Bond Breaking and Formation on a Magnetite Surface},
author = {A Bourgund and B A J Lechner and M Meier and C Franchini and G S Parkinson and U Heiz and F Esch},
url = {\<Go to ISI\>://WOS:000481568900054},
doi = {10.1021/acs.jpcc.9b05547},
issn = {1932-7447},
year = {2019},
date = {2019-07-17},
urldate = {2019-07-17},
journal = {Journal of Physical Chemistry C},
volume = {123},
number = {32},
pages = {19742-19747},
keywords = {Foundry Inorganic, Molecularly-Functionalized},
pubstate = {published},
tppubtype = {article}
}
128.
E Mitterreiter, Y Liang, M Golibrzuch, D Mclaughlin, C Csoklich, J D Bartl, A W Holleitner, U Wurstbauer, A S Bandarenka
In-situ visualization of hydrogen evolution sites on helium ion treated molybdenum dichalcogenides under reaction conditions Journal Article
In: npj 2D Materials and Applications, vol. 3, no. 1, pp. 25, 2019, ISSN: 2397-7132.
Abstract | Links | Tags: Solid-Liquid
@article{,
title = {In-situ visualization of hydrogen evolution sites on helium ion treated molybdenum dichalcogenides under reaction conditions},
author = {E Mitterreiter and Y Liang and M Golibrzuch and D Mclaughlin and C Csoklich and J D Bartl and A W Holleitner and U Wurstbauer and A S Bandarenka},
url = {https://doi.org/10.1038/s41699-019-0107-5},
doi = {10.1038/s41699-019-0107-5},
issn = {2397-7132},
year = {2019},
date = {2019-07-15},
journal = {npj 2D Materials and Applications},
volume = {3},
number = {1},
pages = {25},
abstract = {Nanostructured 2D transition metal dichalcogenides play an increasingly important role in heterogeneous catalysis. These materials are abundant (co-)catalysts with tunable properties to catalyze a number of key reactions related to energy provision, for instance the hydrogen evolution reaction (HER). It is vital to understand which surface sites are active in order to maximize their number and to improve the overall (photo-)catalytic behavior of those materials. Here, we visualize these active sites under HER conditions at the surface of molybdenum dichalcogenides (MoX2, X = Se, S) with lateral resolution on the nanometer scale by means of electrochemical scanning tunneling microscopy. The edges of single MoX2 flakes show high catalytic activity, whereas their terraces are inactive. We demonstrate how the inert basal planes of these materials can be activated towards the HER with the help of a focused beam of a He-ion microscope. Our findings demonstrate that the He-ion induced defects contribute at lower overpotentials to the HER, while the activity of the edges exceeds the activity of the basal defects for sufficiently high overpotentials. Given the lithographic resolution of the helium ion microscope, our results show the possibility to generate active sites in transition metal dichalcogenides with a spatial resolution below a few nanometers.},
keywords = {Solid-Liquid},
pubstate = {published},
tppubtype = {article}
}
Nanostructured 2D transition metal dichalcogenides play an increasingly important role in heterogeneous catalysis. These materials are abundant (co-)catalysts with tunable properties to catalyze a number of key reactions related to energy provision, for instance the hydrogen evolution reaction (HER). It is vital to understand which surface sites are active in order to maximize their number and to improve the overall (photo-)catalytic behavior of those materials. Here, we visualize these active sites under HER conditions at the surface of molybdenum dichalcogenides (MoX2, X = Se, S) with lateral resolution on the nanometer scale by means of electrochemical scanning tunneling microscopy. The edges of single MoX2 flakes show high catalytic activity, whereas their terraces are inactive. We demonstrate how the inert basal planes of these materials can be activated towards the HER with the help of a focused beam of a He-ion microscope. Our findings demonstrate that the He-ion induced defects contribute at lower overpotentials to the HER, while the activity of the edges exceeds the activity of the basal defects for sufficiently high overpotentials. Given the lithographic resolution of the helium ion microscope, our results show the possibility to generate active sites in transition metal dichalcogenides with a spatial resolution below a few nanometers.
127.
Y X Li, H Huang, Y Xiong, A F Richter, S V Kershaw, J Feldmann, A L Rogach
Using Polar Alcohols for the Direct Synthesis of Cesium Lead Halide Perovskite Nanorods with Anisotropic Emission Journal Article
In: Acs Nano, vol. 13, no. 7, pp. 8237-8245, 2019, ISSN: 1936-0851.
Links | Tags: Foundry Inorganic
@article{,
title = {Using Polar Alcohols for the Direct Synthesis of Cesium Lead Halide Perovskite Nanorods with Anisotropic Emission},
author = {Y X Li and H Huang and Y Xiong and A F Richter and S V Kershaw and J Feldmann and A L Rogach},
url = {\<Go to ISI\>://WOS:000477786400088},
doi = {10.1021/acsnano.9b03508},
issn = {1936-0851},
year = {2019},
date = {2019-07-11},
journal = {Acs Nano},
volume = {13},
number = {7},
pages = {8237-8245},
keywords = {Foundry Inorganic},
pubstate = {published},
tppubtype = {article}
}