Two different emission enhancement of trans-stilbene crystal under high pressure: Different evolution of structure  

作　　者：Yarong Gu Guicheng Shao Zhumei Tian Haixia Li Kai Wang Bo Zou 古雅荣;邵贵成;田竹梅;李海霞;王凯;邹勃(Department of Electronics,Xinzhou Teachers University,Xinzhou 034000,China;State Key Laboratory of Superhard Materials,Jilin University,Changchun 130012,China)

机构地区：[1]Department of Electronics,Xinzhou Teachers University,Xinzhou 034000,China [2]State Key Laboratory of Superhard Materials,Jilin University,Changchun 130012,China

出　　处：《Chinese Physics B》2022年第1期608-612,共5页中国物理B（英文版）

基　　金：the National Natural Science Foundation of China(Grant Nos.21725304,11774120,and 11904010);the Chang Jiang Scholars Program of China(Grant No.T2016051);Changbai Mountain Scholars Program(Grant No.2013007);the Science and Technology Innovation Program of Shanxi Province,China(Grant Nos.2020L0540 and 2020L0544);Scientific Research Fund of XinZhou Teachers University(Grant No.2019KY04).

摘　　要：Mechanoresponsive luminescent(MRL)materials have drawn extensive concern due to their potential applications in mechanical sensors,memory chips,and security inks;especially these possessing high emission efficiency.In this work,we found trans-stilbene crystal exhibited two different pressure-induced emission enhancement(PIEE)behaviors at different pressure areas.The structural characterizations combined with density functional theory calculation indicate that the first emission enhancement was due to the decrease of nonradiation transition by the weaken of energy exchange process between atoms and lattice.And the second emission enhancement was attributed to the strengthen of C-H...C interactions from the non-planarization comformation.The results regarding the mechanoresponsive behavior of trans-stilbene offered a deep insight into PIEE from the structural point of view,which will facilitate the design of and search for high-performance MRL materials.

关 键 词：pressure-induced emission enhancement density functional theory high pressure 

分 类 号：TQ241.2[化学工程—有机化工] TB34[一般工业技术—材料科学与工程]