光催化
光化学
共轭体系
共价键
聚合物
乙炔
材料科学
三嗪
催化作用
可见光谱
化学
高分子化学
有机化学
光电子学
作者
Xing-Wang Lan,Juan Wang,Qing X. Li,Aiqing Wang,Yize Zhang,Xianheng Yang,Guoyi Bai
出处
期刊:Chemsuschem
[Wiley]
日期:2022-01-24
卷期号:15 (4)
被引量:4
标识
DOI:10.1002/cssc.202102455
摘要
Solar-driven photocatalytic chemical transformation provides a sustainable strategy to produce valuable feedstock, but designing photocatalysts with high efficiency remains challenging. Herein, two acetylene- or vinylene-bridged π-conjugated covalent triazine polymers, A-CTP-DPA and V-CTP-DPE, were successfully fabricated toward metal-free photocatalytic oxidation under visible light irradiation. Compared to the one without acetylene or vinylene bridge, both resulting polymers exhibited superior activity in photocatalytic selective oxidation of sulfides and oxidative coupling of amines; in particular, A-CTP-DPA delivered an optimal photocatalytic performance. The superior activity was attributed to the broadened spectral response range, effective separation, rapid transportation of photogenerated charge carriers, and abundant active sites for photogenerated electrons due to the existence of the acetylene bridge in the framework. This work highlights the potential of acetylene and vinylene bridges in tuning catalytic efficiency of organic semiconductors, providing a guideline for the design of efficient photocatalysts.
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