Publications
7 results found
Ghasemi M, Balar N, Peng Z, et al., 2021, A molecular interaction-diffusion framework for predicting organic solar cell stability, NATURE MATERIALS, Vol: 20, Pages: 525-+, ISSN: 1476-1122
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- Citations: 2
Marsh AV, Little M, Cheetham NJ, et al., 2021, Highly Deformed <i>o</i>-Carborane Functionalised Non-linear Polycyclic Aromatics with Exceptionally Long C-C Bonds, CHEMISTRY-A EUROPEAN JOURNAL, Vol: 27, Pages: 1970-1975, ISSN: 0947-6539
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- Citations: 6
Marsh A, Dyson MJ, Cheetham NJ, et al., 2020, Correlating the Structural and Photophysical Properties of<i>Ortho</i>,<i>Meta</i>, and<i>Para</i>-Carboranyl-Anthracene Dyads, ADVANCED ELECTRONIC MATERIALS, Vol: 6, ISSN: 2199-160X
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- Citations: 13
Kosco J, Bidwell M, Cha H, et al., 2020, Enhanced photocatalytic hydrogen evolution from organic semiconductor heterojunction nanoparticles, Nature Materials, Vol: 19, Pages: 559-565, ISSN: 1476-1122
Photocatalysts formed from a single organic semiconductor typically suffer from inefficient intrinsic charge generation, which leads to low photocatalytic activities. We demonstrate that incorporating a heterojunction between a donor polymer (PTB7-Th) and non-fullerene acceptor (EH-IDTBR) in organic nanoparticles (NPs) can result in hydrogen evolution photocatalysts with greatly enhanced photocatalytic activity. Control of the nanomorphology of these NPs was achieved by varying the stabilizing surfactant employed during NP fabrication, converting it from a core–shell structure to an intermixed donor/acceptor blend and increasing H2 evolution by an order of magnitude. The resulting photocatalysts display an unprecedentedly high H2 evolution rate of over 60,000 µmol h−1 g−1 under 350 to 800 nm illumination, and external quantum efficiencies over 6% in the region of maximum solar photon flux.
Xie C, Heumueller T, Gruber W, et al., 2018, Overcoming efficiency and stability limits in water-processing nanoparticular organic photovoltaics by minimizing microstructure defects, NATURE COMMUNICATIONS, Vol: 9
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- Citations: 86
Kosco J, Sachs M, Godin R, et al., 2018, The effect of residual palladium catalyst contamination on the photocatalytic hydrogen evolution activity of conjugated polymers, Advanced Energy Materials, Vol: 8, ISSN: 1614-6832
The effect of residual Pd on hydrogen evolution activity in conjugated polymer photocatalytic systems is systematically investigated using colloidal poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) nanoparticles as a model system. Residual Pd, originating from the synthesis of F8BT via Pd catalyzed polycondensation polymerization, is observed in the form of homogeneously distributed Pd nanoparticles within the polymer. Residual Pd is essential for any hydrogen evolution to be observed from this polymer, and very low Pd concentrations (<40 ppm) are sufficient to have a significant effect on the hydrogen evolution reaction (HER) rate. The HER rate increases linearly with increasing Pd concentration from <1 ppm to approximately 100 ppm, at which point the rate begins to saturate. Transient absorption spectroscopy experiments support these conclusions, and suggest that residual Pd mediates electron transfer from the F8BT nanoparticles to protons in the aqueous medium.
Wadsworth A, Hamid Z, Bidwell M, et al., 2018, Progress in Poly (3-Hexylthiophene) Organic Solar Cells and the Influence of Its Molecular Weight on Device Performance, ADVANCED ENERGY MATERIALS, Vol: 8, ISSN: 1614-6832
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