期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 245, 期 -, 页码 596-603出版社
ELSEVIER
DOI: 10.1016/j.apcatb.2019.01.010
关键词
Conjugated polymer; Photocatalysis; Hydrogen evolution; Electron-output tentacles; Artificial photosynthesis
资金
- National Natural Science Foundation of China [21761132002, 21425309, 21861130353]
- National Basic Research Program of China [2013CB632405]
- National Key Technologies R&D Program of China [2018YFA0209301]
- 111 Project [D16008]
- China Scholarship Council (CSC) [201706650004]
The tunable structures and versatile properties for conjugated polymers (CPs) make them viable as a molecular platform for photocatalytic water splitting. Normally, structure design of polymer photocatalyst is focus on tuning its optical band structure or charge-separation ability, the importance of electron-output ability in photocatalytic process is always ignored. This study demonstrates a molecular engineering strategy by introducing an electron-output tentacle site, i.e. dibenzothiophene-S,S-dioxide (FSO) unit, into the polymer backbone to construct a series of donor-acceptor type conjugated polymer photocatalysts for efficient hydrogen evolution, which not only results in optimized light absorption ability and excellent exciton-separation, but also leads to the efficient electron-output ability. Detailed DFT calculations further theoretically confirm the vital role of FSO unit as an electron-output tentacle site.
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