首页|A Selenium Atom Involved Covalent Organic Framework for Window Ledge Photocatalytic Oxidation of Sulfides

A Selenium Atom Involved Covalent Organic Framework for Window Ledge Photocatalytic Oxidation of Sulfides

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Covalent organic frameworks(COFs)driven photocatalytic organic transformations especially photooxidation reactions have become a fertile topic and attracted numerous research attentions.Boosting the charge generation and transport process is the key factor for achieving high catalytic efficiencies.As one of the most effective strategies,the introduction of"heavy atoms"into the long-range or-dered conjugated backbones can effectively facilitate the intersystem crossing(ISC)process and hence improve the generation of ac-tive oxygens,which is beneficial for the oxidation.In this work,we designed and synthesized a benzoselenadiazole based covalent or-ganic framework(COF)material,BSe-COF with heavy atom of selenium(Se),and a benzothiadiazole based BT-COF with isomorphic backbone for comparison.Compared to BT-COF,BSe-COF exhibits broader absorption range,stronger photocurrent response and en-hanced intersystem crossing(ISC)with higher singlet oxygen(1O2)generation efficiency.When applied in photocatalytic organic trans-formation,BSe-COF presents remarkably higher photocatalytic activity in the oxidation of sulfides than BT-COF under the irradiation of blue LED lamp.Furthermore,BSe-COF can be used as efficient photocatalyst for the window ledge reaction with high yields(over 84％)of various sulfoxides from a wide range of thioether substrates scope.

Covalent organic frameworkBenzoselenadiazoleDensity functional theoryHeavy atomPhotocatalysisPhotooxidationSinglet oxygenWindow ledge reaction

Fan Yang、Xia Li、Hong-Yan Qu、Jing-Lan Kan、Yuan Guo、Yu-Bin Dong

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College of Chemistry,Chemical Engineering and Materials Science,Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong,Key Laboratory of Molecular and Nano Probes,Ministry of Education,Shandong Normal University,Jinan,Shandong 250014,China

School of Light Industry and Engineering,Qilu University of Technology(Shandong Academy of Sciences),Jinan,Shandong 250353,China

2024

10.1002/cjoc.202400139

中国化学(英文版)
中国化学会 上海有机化学研究所

中国化学(英文版)

CSTPCD
影响因子：0.848
ISSN：1001-604X
年,卷(期)：2024.42(17)