A Vinylene‐Bridged Conjugated Covalent Triazine Polymer as a Visible‐Light‐Active Photocatalyst for Degradation of Methylene Blue

• DOI: 10.1002/marc.202000006
• Publication Date: 2020-02-25T14:41:08Z
• Authors: Chen Xu; Qiujian Xie; Weijie Zhang; Shaohui Xiong; Chunyue Pan; Juntao Tang; Guipeng Yu
• Keywords: Methylene Blue; Vinyl Compounds; Light; Molecular Structure; Polymers; Triazines; Particle Size; Photochemical Processes; 01 natural sciences; Catalysis; 0104 chemical sciences

AbstractThe development of new photocatalytic platforms using novel semiconductor material is an important challenge. Herein, a sp2 carbon‐conjugated covalent triazine polymer (sp2c‐CTP‐4), featuring a vinylene bridge and extended π‐conjugation, is prepared as a highly efficient photocatalyst for degradation of methylene blue. sp2c‐CTP‐4 exhibits substantial semiconducting properties such as enhanced charge transfer and prolonged lifetime of carriers compared to its counterparts with CN or CC connections, likely due to its extended π‐delocalization with an unencumbered CC bridge. Moreover, benefiting from its high chemical stability, the as‐made catalyst can be recycled five times with good retention of photocatalytic activity. This study provides a new pathway for constructing a robust platform for efficient photocatalysis and gives insight into the structure–property relationship of conjugated polymers.