Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 30, Pages 10236-10240Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904904
Keywords
charge-transfer pathway; conjugated polymer; exciton binding energy; hydrogen evolution; photocatalysis
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Funding
- National Natural Science Foundation of China [21761132002, 21425309, 21861130353]
- National Key Technologies R & D Program of China [2018YFA0209301]
- National Basic Research Program of China [2013CB632405]
- 111 Project [D16008]
- Chang Jiang Scholars Program of China [T2016147]
- China Scholarship Council (CSC) [201706650004]
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Exciton binding energy has been regarded as a crucial parameter for mediating charge separation in polymeric photocatalysts. Minimizing the exciton binding energy of the polymers can increase the yield of charge-carrier generation and thus improve the photocatalytic activities, but the realization of this approach remains a great challenge. Herein, a series of linear donor-acceptor conjugated polymers has been developed to minimize the exciton binding energy by modulating the charge-transfer pathway. The results reveal that the reduced energy loss of the charge-transfer state can facilitate the electron transfer from donor to acceptor, and thus, more electrons are ready for subsequent reduction reactions. The optimized polymer, FSO-FS, exhibits a remarkable photochemical performance under visible light irradiation.
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