Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission  

作　　者：Yuzhu Li Yumeng Gao Feng Tian Yu Wang Yuan Yao Shaoliang Lin Xiang Ma Binbin Xu 

机构地区：[1]Shanghai Key Laboratory of Advanced Polymeric Materials,Key Laboratory for Ultrafine Materials of Ministry of Education,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China [2]Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre,Frontiers Science for Materiobiology and Dynamic Chemistry,School of Chemistry and Molecular Engineering,East China University of Science&Technology,Shanghai 200237,China [3]Shanghai Synchrotron Radiation Facility,Shanghai Advanced Research Institute,Chinese Academy of Sciences,Shanghai 201204,China

出　　处：《Science China Chemistry》2025年第1期329-336,共8页中国科学(化学英文版)

基　　金：supported by the National Natural Science Foundation of China(52073094,52273291,52273008);the Shanghai Scientific and Technological Innovation Project(22ZR1479300);the Shanghai Rising-Star Program(23QA1402500)。

摘　　要：Developing organic room-temperature phosphorescence(RTP)materials with a wide range of tunable-emission is significant in expanding the applications of RTP materials.Herein,we rationally designed amphiphilic alternating copolymers poly(1,2-bis(4-alkoxyphenyl)ethane-1,2-dione-alt-(ethylene glycol)x)(P(Bz-alt-EGx))that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain conformation.Through a mainchain conformation ordering assembly(COA)process,P(Bz-alt-EGx)self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined microenvironment.In contrast,traditional self-assembly(TA)of P(Bz-alt-EGx)obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like micelles.The resultant less ordered aggregates exhibited yellow-green RTP at ca.550 nm.The wide-tuning RTP emission in solution(between blue and yellow-green,over125 nm)is realized using the P(Bz-alt-EG_(x))alternating copolymers under the treatment of different self-assembly conditions.This study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关 键 词：SELF-ASSEMBLY conformation ordering alternating copolymer phosphorescence emission 

分 类 号：O63[理学—高分子化学]