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A Simple Approach to Achieve Organic Radicals with Unusual Solid-State Emission and Persistent Stability

查看全文 作　　者：Xueqian [1]Zhao;Junyi [1]Gong;Parvej [1]Alam;Chao [2]Ma;Yanpei [3]Wang;Jing [3]Guo;Zebin [3]Zeng;Zikai [4]He;Herman [1]H.Y.Sung;Ian [1]D.Williams;Kam Sing [2]Wong;Sijie [5]Chen;Jacky [1]W.Y.Lam;Zheng [6]Zhao;Ben Zhong [1,6,7,8,9]Tang 高影响力作者 机构地区：[1]Department of Chemistry,Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction,Institute for Advanced Study and Guangdong-Hong Kong-Macro Joint Laboratory of Optoelectronic and Magnetic Functional Materials,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong 999077;[2]Department of Physics,Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong 999077;[3]State Key Laboratory of Chemo/Biosensing and Chemometrics,College of Chemistry and Chemical Engineering,Hunan University,Changsha,Hunan Province 410082;[4]School of Science,Harbin Institute of Technology,Shenzhen,HIT Campus of University Town,Shenzhen,Guangdong Province 518055;[5]Ming Wai Lau Centre for Reparative Medicine,Karolinska Institutet,Hong Kong 999077;[6]School of Science and Engineering,Chinese University of Hong Kong,Shenzhen,Guangdong Province 518172;[7]HKUST-Shenzhen Research Institute,South Area Hi-Tech Park,Nanshan,Shenzhen,Guangdong Province 518057;[8]Center for Aggregation-Induced Emission,SCUTHKUST Joint Research Institute,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou,Guangdong Province 510640;[9]AIE Institute,Guangzhou Development District,Huangpu,Guangzhou,Guangdong Province 510530高影响力机构 出　　处：《CCS Chemistry》索引2022年第4卷第6期,共9页高影响力期刊 基　　金：financially supported by theNationalNatural Science Foundation of China(grant no.21788102);the NaturalScienceFoundationofGuangdongProvince(grant nos.2019B121205002 and 2019B030301003);the Research Grants Council of Hong Kong(grant nos.16305618,16305518,C6014-20W,C6009-17G,and AoE/P-02/12);the National Key Research and Development Program(grant no.2018YFE0190200);the Innovation and Technology Commission(grant no.ITC-CNERC14SC01);the Science and Technology Plan of Shenzhen(grant nos.JCYJ20180306174910791,JCYJ20170818113530705,JCY J20170818113538482,and JCYJ20160229205601482). 摘　　要：Sable organic radicals are promising materials for information storage,molecular magnetism,electronic devices,and biological probes.Many organic radicals have been prepared,but most are non-or weakly emissive and degrade easily upon photoexcitation.It remains challenging to produce stable and efficient luminescent radicals because of the absence of general guidelines for their synthesis.Herein,we present a photoactivation approach to generate a stable luminescent radical from tris(4-chlorophenyl)phosph ine(TCPP)with red emission in the crystal state.The mechanistic study suggests that the molecular symmetry breaking in the crystal causes changes of molecular conformation,redox properties,andmolecular packing that facilitates radical generation and stabilization.This design strategy demonstrates a straightforward approach to develop stable organic luminescent radicals that will open new doors to photoinduced luminescent radical materials. 关 键 词：luminescent radicals symmetry breaking tris(4-chlorophenyl)phosphine anticounterfeiting photoinduced electron transfer
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