Post-cyclization of a bisimine-linked covalent organic framework to enhance the performance of visible-light photocatalytic hydrogen evolution

Covalent organic frameworks (COFs) are promising candidates for the photocatalytic hydrogen evolution. Here, we reported the synthesis of a bisimine-linked COF and its partial post-cyclization to an imidazolium-linked COF. Both the chemical stability and π-electron delocalization are significantly i...

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Bibliographic Details
Published in:Polymer chemistry 2023-03, Vol.14 (12), p.1323-1329
Main Authors: Liu, Huanyu, Li, Yueting, Dai, Lu, Meng, Xiangjian, Dong, Anwang, Zhou, Zimo, Lv, Huixia, Li, Pengfei, Wang, Bo
Format: Article
Language:English
Subjects:
Hydrogen evolution
Pi-electrons
Polymer chemistry
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Summary:Covalent organic frameworks (COFs) are promising candidates for the photocatalytic hydrogen evolution. Here, we reported the synthesis of a bisimine-linked COF and its partial post-cyclization to an imidazolium-linked COF. Both the chemical stability and π-electron delocalization are significantly improved by the post-cyclization, leading to a triply increased hydrogen evolution rate. The photocatalytic hydrogen evolution rate of a bisimine-linked COF was enhanced 3 times when partially converted to an imidazolium-linked COF.
ISSN:1759-9954
1759-9962
DOI:10.1039/d3py00181d