首页 | 本学科首页   官方微博 | 高级检索  
     


Design and Synthesis of a Triazine-Based sp2 Carbon-Conjugated Covalent Organic Framework for Blue Light Photocatalysis
Authors:Fulin Zhang  Xiaoyun Dong  Yuexin Wang  Xianjun Lang
Affiliation:Sauvage Center for Molecular Sciences, Hubei Key Lab on Organic and Polymeric Optoelectronic Materials, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072 China
Abstract:Fully conjugated covalent organic frameworks (COFs) can exhibit great potential in semiconductor photocatalysis. But their syntheses remain elusive due to the low reversibility of vinylene linkage. Herein, by tuning the amount of base and temperature, a novel triazine-based sp2 carbon-conjugated COF (TA-sp2c-COF) is successfully constructed over Cs2CO3. Besides, the influence of modulating factors on the chemical and optoelectronic properties of TA-sp2c-COF is thoroughly investigated. TA-sp2c-COF adopts an eclipsed AA stacking structure with uniform micropores (1.4 nm). The blue light photocatalysis of the highly crystalline TA-sp2c-COF is established for the selective oxidative coupling of amines with oxygen, and the predominant role of superoxide is identified in forming imines. This work foretells that meticulous modulation of reaction conditions is the key to constructing sp2 carbon-conjugated COFs toward solar photocatalysis.
Keywords:blue light photocatalysis  covalent organic frameworks  sp2   carbon-conjugation  superoxide  triazine
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号