Issue 35, 2018

The effect of molecular structure and fluorination on the properties of pyrene-benzothiadiazole-based conjugated polymers for visible-light-driven hydrogen evolution

Abstract

The development of highly efficient organic photocatalysts for water splitting into hydrogen is one of the key challenges in materials chemistry. Herein, we have designed and synthesized a series of conjugated polymers with either a one- or three-dimensional framework consisting of pyrene and benzothiadiazole with different numbers of fluorine substitutions (0 or 2). The effect of molecular structure and fluorine substitution on their catalytic activity was investigated. It was found that the linear non-fluorinated polymer L-PyBT exhibited the highest hydrogen evolution rate up to 83.7 μmol h−1 under visible light irradiation among the prepared polymers because of its broad light absorption, suitable energy bandgap, and enhanced charge generation and separation process.

Graphical abstract: The effect of molecular structure and fluorination on the properties of pyrene-benzothiadiazole-based conjugated polymers for visible-light-driven hydrogen evolution

Supplementary files

Article information

Article type
Paper
Submitted
12 May 2018
Accepted
31 Jul 2018
First published
01 Aug 2018

Polym. Chem., 2018,9, 4468-4475

The effect of molecular structure and fluorination on the properties of pyrene-benzothiadiazole-based conjugated polymers for visible-light-driven hydrogen evolution

C. Cheng, X. Wang, Y. Lin, L. He, J. Jiang, Y. Xu and F. Wang, Polym. Chem., 2018, 9, 4468 DOI: 10.1039/C8PY00722E

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