期刊
MACROMOLECULES
卷 51, 期 23, 页码 9502-9508出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.macromol.8b02023
关键词
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资金
- National Natural Science Foundation of China [21574077, 21304055]
- National Key Research and Development Program of China [2016YFB0401005]
- MOST
- Fundamental Research Funds for the Central Universities [GK201801001]
Conjugated microporous polymers (CMPs) exhibit great potential for photocatalytic hydrogen generation due to their tunable electronic structure. The rational molecular design is a key point for developing an efficient CMP photocatalyst. Herein, we developed two CMPs photocatalysts via the copolymerization from pyrene and dibenzothiophene-S,S-dioxide building blocks. The effect of the linking pattern of the building block of dibenzothiophene-S,S-dioxide on the photocatalytic hydrogen evolution was explored. The polymer of PyDOBT-1 with 3,7-linking pattern shows a superior photocatalytic performance to PyDOBT-2 with 2,8-linking pattern because the 3,7-linking pattern enhances the conjugation chain length and improves the coplanarity of the polymeric backbone, which facilitate the charges migration along the polymer chain. As a result, the bare PyDOBT-1 shows an impressive visible light activity with a hydrogen evolution rate (HER) of 5697 mu mol h(-1) g(-1). Notably, an outstanding HER of 12986 mu mol h(-1) g(-1) was also obtained by the Pt-modified PyDOBT-1 under the full-arc spectrum (lambda > 300 nm), which lies toward the upper end compared to that of the reported organic photocatalysts.'
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