Halogenated benzothiadiazole-based conjugated polymers as efficient photocatalysts for dye degradation and oxidative coupling of benzylamines  

作　　者：Chu Chu Yuancheng Qin Cailing Ni Jianping Zou 

机构地区：[1]Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle,Nanchang Hangkong University,Nanchang 330063,China

出　　处：《Chinese Chemical Letters》2022年第5期2736-2740,共5页中国化学快报（英文版）

基　　金：financially supported by National Natural Science Foundation of China(No.52173099);the Science and Technology Department of Jiangxi Province(No.20192BBEL50025);Nanchang Hangkong University(No.EA201902288);the Special Fund for Graduate Innovation(No.YC2020-011).

摘　　要：Donor-acceptor(D-A)conjugated polymers are widely used in photovoltaic applications and heteroge-neous catalysis due to their tunable building block and pre-designable structures.Here,a series of ad-justable Donor-acceptor(D-A)benzothiodiazole-based conjugated polymers were designed and synthe-sized.The photocatalytic performance could be improved by fine-tuning the chemical structure by halo-gen substitution(F or Cl).The polymers exhibited excellent optoelectronic properties and were effective photocatalysts for the degradation of RhB and MO dyes,as well as promoting the oxidative coupling of benzylamines.Complete degradation of RhB and MO occurred in 30 min under visible light radiation,while the yield of benzylamine coupling mediated by superoxide anion was as high as 82%.Systematic characterization methods were used to gain insights on the unique photocatalytic performance of the polymers.Our findings provide further insights into the design and synthesis of benzothiadiazole-based conjugated polymers as promising organic photocatalysts for solar energy conversion.

关 键 词：Conjugated polymer Band gap Dye degradation Photocatalysis Benzylamine oxidation 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]