文献类型：期刊文献

英文题名：Vibration-induced emission: Dynamic multiple intrinsic luminescence

作者：Zhang, Zhiyun[1];Jin, Xin;Sun, Xuwen;Su, Jianhua;Qu, Da -Hui

机构：[1]East China Univ Sci & Technol, Frontiers Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, 130 Meilong Rd, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：472

外文期刊名：COORDINATION CHEMISTRY REVIEWS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000861059600008)】；

基金：This work was supported by NSFC/China (21788102, 22175063, 21905090, and 21790361), Shanghai Municipal Sci. & Tech. Major Project (2018SHZDZX03), the 111 Project (B16017), Shanghai Committee of Sci. & Tech. (17520750100), Natural Science Foundation of Shanghai (19ZR1412200), and the Program for Eastern Scholar Distinguished Professor.

语种：英文

外文关键词：Dihydrophenazine; Vibration-induced emission; Luminescence-structure relationships; Dynamic multiple emission; Photoconductance

摘要：pi-Conjugated molecules exhibit prosperous excited-state processes and tunable luminescence proper-ties, as the key building blocks for fabricating smart luminescent materials. In this review, we focus on the vibration-induced emission (VIE) of saddle-shaped dihydrophenazine (DHP) derivatives, which involves dynamic conformation changes of photoexcited molecules to planar configuration in charge of the large Stokes-shifted emission. By modifying the rigid-flexible fused skeleton of DHP, a continuously tunable emission over a wide range can be achieved through the dynamic bent-to-planar transformations of a single-molecule entity. The interplay of aromaticity and steric hindrance was proposed as the regu-lation mechanism, and applied to clarify how the luminescence characteristics were affected by the intramolecular steric hindrance and ring tension. By taking advantage of the VIE phenomenon, i.e., dra-matic structural/electronic responses and sensitive vibration-degree-dependent emissions, donor -bridge-acceptor systems with conformation-dependent electron/energy donors were fabricated, and the output of colorful fluorescent signals visible to the naked eye were realized in response to minor inter-/intra-molecular stimulations. Furthermore, the VIE phenomenon of DHPs brings new possibilities for obtaining different conductance features as one molecule changes its conformation in the metal- molecule-metal junction arrangement. This review includes the recent progress in VIE research as well as our perspectives on future directions.(c) 2022 Elsevier B.V. All rights reserved.