文献类型：期刊文献

英文题名：Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

作者：Li, Yuzhu[1];Gao, Yumeng[1];Tian, Feng[4];Wang, Yu[1];Yao, Yuan[1];Lin, Shaoliang[1];Ma, Xiang[2,3];Xu, Binbin[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai Key Lab Adv Polymer Mat, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Frontiers Sci Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Feringa Noble Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Frontiers Sci Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China;[4]Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China

年份：2025

卷号：68

期号：1

起止页码：329

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20244117156065);WOS:【SCI-EXPANDED(收录号:WOS:001326688500001)】；

基金：This work was supported by the National Natural Science Foundation of China (52073094, 52273291, 52273008), the Shanghai Scientific and Technological Innovation Project (22ZR1479300) and the Shanghai Rising-Star Program (23QA1402500).

语种：英文

外文关键词：self-assembly; conformation ordering; alternating copolymer; phosphorescence emission

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 EGx skeleton, 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, over 125 nm) is realized using the P(Bz-alt-EGx) 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.