Solid-state room-temperature phosphorescence activated by the end-capping strategy of cyano groups  

作　　者：Jia-Lin Yu Zhaojun Chen Yu-Qi Zhu Yu-Long Jin Xin Wang Ming-Xue Wu Xing-Huo Wang Ying-Wei Yang 

机构地区：[1]Institute for Sustainable Energy and Resources,College of Chemistry and Chemical Engineering,Qingdao University,Qingdao,P.R.China [2]International Joint Research Laboratory of Nano-Macro Architecture Chemistry,College of Chemistry,Jilin University,Changchun,P.R.China

出　　处：《Aggregate》2024年第4期367-375,共9页聚集体（英文）

基　　金：Natural Science Foundation of Shandong Province,Grant/Award Numbers:ZR2022QB018,ZR2020QB111;Natural Science Foundation of Jilin Province,Grant/Award Number:20230101052JC。

摘　　要：Avoiding the tedious process of crystal cultivation and directly obtaining organic crystals with desirable phosphorescent performance is of great significance for studying their structure and properties.Herein,a set of benzophenone-cored phos-phors with bright green afterglow are obtained on a large scale through in-situ generation via an end-capping strategy to suppress non-radiative triplet excitons and reinforce the intermolecular interactions.The ordered arrangement of phosphors with alkyl-cyano groups as regulators is crucial for the enhancement of room-temperature phosphorescence(RTP)emission,which has been further verified by the attenuated lifetimes in isolated states through the formation of inclusion complexes upon binding with pillar[5]arenes.Moreover,the hierarchical interactions of phos-phors,including hydrogen bonding,π-πstacking interactions,and van der Waals forces,are quantified by crystal structures and theoretical calculation to deeply inter-pret the origins of RTP emission.With this study,we provide a potential strategy for the direct acquisition of crystalline organic phosphors and modulation of RTP.

关 键 词：alkyl-chain length selectivity pillar[n]arenes room-temperature phosphorescence supramolecular interactions 

分 类 号：O61[理学—无机化学]