部分
分子内力
噻吩
路易斯酸
材料科学
聚噻吩
吡啶
聚合物
共轭体系
硼
高分子化学
催化作用
导电聚合物
化学
有机化学
复合材料
作者
Xue Han,Cece Xue,Zhuo Zhao,Min Peng,Qing Wang,Haiming Liu,Na Yu,Chaodan Pu,Yi Ren
出处
期刊:ACS Macro Letters
[American Chemical Society]
日期:2023-06-29
卷期号:12 (7): 961-967
被引量:3
标识
DOI:10.1021/acsmacrolett.3c00307
摘要
Doping the boron (B) element endowed organic π-conjugated polymers (OCPs) with intriguing optoelectronic properties. Herein, we introduce a new series of thienylborane-pyridine (BN) Lewis pairs via the facile reactions between thienylborane and various pyridine derivatives. Particularly, we developed a “one-pot” synthetic protocol to access BN2 with an unstable 4-bromopyridine moiety. Polycondensations between the BN Lewis pairs and distannylated thiophene afforded a new series of BN-cross-linked polythiophenes (BN-PTs). Experiments revealed that BN-PTs exhibited highly uniform chemical structures, particularly the uniform chemical environment of B-centers. BN-PTs showed good stability in the solid state. PBN2 even maintained the uniform B-center under high temperature or moisture conditions. The studies further suggested that the presence of topological BN structures endowed the polymers with strong intramolecular charge separation character. As a proof of concept, a representative BN-PT was tested as the catalyst for photocatalytic hydrogen evolution.
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