@article{,
title = {Paired Ru‒O‒Mo ensemble for efficient and stable alkaline hydrogen evolution reaction},
author = {H Li and K Liu and J Fu and K Chen and K Yang and Y Lin and B Yang and Q Wang and H Pan and Z Cai and H Li and M Cao and J Hu and Y-R Lu and T-S Chan and E Cort\'{e}s and A Fratalocchi and M Liu},
url = {http://www.sciencedirect.com/science/article/pii/S2211285521000252},
doi = {https://doi.org/10.1016/j.nanoen.2021.105767},
issn = {2211-2855},
year = {2021},
date = {2021-04-01},
journal = {Nano Energy},
volume = {82},
pages = {105767},
abstract = {Electrocatalytic hydrogen evolution reaction (HER) in alkaline media is a promising electrochemical energy conversion strategy. Ruthenium (Ru) is an efficient catalyst with a desirable cost for HER, however, the sluggish H2O dissociation process, due to the low H2O adsorption on its surface, currently hampers the performances of this catalyst in alkaline HER. Herein, we demonstrate that the H2O adsorption improves significantly by the construction of Ru\textendashO\textendashMo sites. We prepared Ru/MoO2 catalysts with Ru\textendashO\textendashMo sites through a facile thermal treatment process and assessed the creation of Ru\textendashO\textendashMo interfaces by transmission electron microscope (TEM) and extended X-ray absorption fine structure (EXAFS). By using Fourier-transform infrared spectroscopy (FTIR) and H2O adsorption tests, we proved Ru\textendashO\textendashMo sites have tenfold stronger H2O adsorption ability than that of Ru catalyst. The catalysts with Ru\textendashO\textendashMo sites exhibited a state-of-the-art overpotential of 16 mV at 10 mA cm\textendash2 in 1 M KOH electrolyte, demonstrating a threefold reduction than the previous bests of Ru (59 mV) and commercial Pt (31 mV) catalysts. We proved the stability of these performances over 40 h without decline. These results could open a new path for designing efficient and stable catalysts.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{,
title = {Picosecond time-resolved photon antibunching measures nanoscale exciton motion and the true number of chromophores},
author = {G J Hedley and T Schr\"{o}der and F Steiner and T Eder and F J Hofmann and S Bange and D Laux and S H\"{o}ger and P Tinnefeld and J M Lupton and J Vogelsang},
url = {https://doi.org/10.1038/s41467-021-21474-z},
doi = {10.1038/s41467-021-21474-z},
issn = {2041-1723},
year = {2021},
date = {2021-02-26},
journal = {Nature Communications},
volume = {12},
number = {1},
pages = {1327},
abstract = {The particle-like nature of light becomes evident in the photon statistics of fluorescence from single quantum systems as photon antibunching. In multichromophoric systems, exciton diffusion and subsequent annihilation occurs. These processes also yield photon antibunching but cannot be interpreted reliably. Here we develop picosecond time-resolved antibunching to identify and decode such processes. We use this method to measure the true number of chromophores on well-defined multichromophoric DNA-origami structures, and precisely determine the distance-dependent rates of annihilation between excitons. Further, this allows us to measure exciton diffusion in mesoscopic H- and J-type conjugated-polymer aggregates. We distinguish between one-dimensional intra-chain and three-dimensional inter-chain exciton diffusion at different times after excitation and determine the disorder-dependent diffusion lengths. Our method provides a powerful lens through which excitons can be studied at the single-particle level, enabling the rational design of improved excitonic probes such as ultra-bright fluorescent nanoparticles and materials for optoelectronic devices.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}

@article{,
title = {Super-resolution Imaging of Energy Transfer by Intensity-Based STED-FRET},
author = {A M Molszalai and B Siarry and J Lukin and S Giusti and N Unsain and A C\'{a}ceres and F Steiner and P Tinnefeld and D Refojo and T M Jovin and F D Stefani},
url = {https://doi.org/10.1021/acs.nanolett.1c00158},
doi = {10.1021/acs.nanolett.1c00158},
issn = {1530-6984},
year = {2021},
date = {2021-02-23},
journal = {Nano Letters},
abstract = {F\"{o}rster resonance energy transfer (FRET) imaging methods provide unique insight into the spatial distribution of energy transfer and (bio)molecular interaction events, though they deliver average information for an ensemble of events included in a diffraction-limited volume. Coupling super-resolution fluorescence microscopy and FRET has been a challenging and elusive task. Here, we present STED-FRET, a method of general applicability to obtain super-resolved energy transfer images. In addition to higher spatial resolution, STED-FRET provides a more accurate quantification of interaction and has the capacity of suppressing contributions of noninteracting partners, which are otherwise masked by averaging in conventional imaging. The method capabilities were first demonstrated on DNA-origami model systems, verified on uniformly double-labeled microtubules, and then utilized to image biomolecular interactions in the membrane-associated periodic skeleton (MPS) of neurons.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}