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- Title
Molecular Engineering of Conjugated Polybenzothiadiazoles for Enhanced Hydrogen Production by Photosynthesis.
- Authors
Yang, Can; Ma, Beatriz Chiyin; Zhang, Linzhu; Lin, Sen; Ghasimi, Saman; Landfester, Katharina; Zhang, Kai A. I.; Wang, Xinchen
- Abstract
The search for metal-free organic photocatalysts for H2 production from water using visible light remains a key challenge. Reported herein is a molecular structural design of pure organic photocatalysts, derived from conjugated polybenzothiadiazoles, for photocatalytic H2 evolution using visible light. By alternating the substitution position of the electron-withdrawing benzothiadizole unit on the phenyl unit as a comonomer, various polymers with either one- or three-dimensional structures were synthesized and the effect of the molecular structure on their catalytic activity was investigated. Photocatalytic H2 evolution efficiencies up to 116 μmol h−1 were observed by employing the linear polymer based on a phenyl-benzothiadiazole alternating main chain, with an apparent quantum yield (AQY) of 4.01 % at 420 nm using triethanolamine as the sacrificial agent.
- Subjects
HYDROGEN production; PHOTOSYNTHESIS; PHOTOCATALYSTS; VISIBLE spectra; MOLECULAR structure
- Publication
Angewandte Chemie, 2016, Vol 128, Issue 32, p9348
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201603532