文献类型：期刊文献

英文题名：Methanol Dynamically Activated Room-Temperature Phosphorescence from a Twisted 4-Bromobiphenyl System

作者：Yuan, Zhiyi;Wang, Jie;Chen, Lu;Zou, Lei;Gong, Xueqing;Ma, Xiang[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China

年份：2020

卷号：2

期号：3

起止页码：158

外文期刊名：CCS CHEMISTRY

收录：WOS:【ESCI(收录号:WOS:000794106500006)】；

基金：This work was supported financially by NSFC (21788102, 21722603, and 21871083), "Shu Guang' project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), the Innovation Program of Shanghai Municipal Education Commission (2017-01-07-00-02-E00010), Shanghai Municipal Science and Technology Major Project (grant no. 2018SHZDZX03), and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：room-temperature phosphorescence; methanol identification; structure deformation; solvate

摘要：Crystal engineering is employed widely in developing metal-free room-temperature phosphorescence (RTP) materials, buttheweakresponsiveness inrigid stateand poor selectivity during crystallization limit the research of RTP materials with specific recognition properties. Herein, based on multicomponent crystallization and the deformation of phosphor, we have developed a galactose-functionalized polyhydric compound (BHB) with a twisted 4-bromobiphenyl structure, to realize methanol selectively activated "off-on" RTP system. Methanol molecules selectively formed solvate with BHB and rigidified the crystal structure by enriching intermolecular noncovalent interactions. Meanwhile, the distortion of the biphenyl group facilitated the intersystem crossing process effectively, alongside the heavy-atom effect from the bromo substitute, thereby, activating the RTP of BHB. Thus our current research approach realizes RTPmaterials with selective recognition function by controlling multiple noncovalent interactions such as hydrogen and halogen bonding of molecular systems with structurally distorted phosphors.