通过分子间相互作用和机械响应调节苯并噻二唑基分子的发光行为  

Adjusting Emission Behaviors of Molecules Based Benzothiadiazole by Intermolecular Interaction and Mechano-responsive

作　　者：董书凡 杨婷婷 文峥杰 王雅婷 许慧侠[1] 董文健 赵松 王华[1] DONG Shufan;YANG Tingting;WEN Zhengjie;WANG Yating;XU Huixia;DONG Wenjian;ZHAO Song;WANG Hua(Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;Shanxi Province Key Laboratory of Microstructure Functional Materials Institute of Solid-state Physical,School of Physics and Electronic Science,Shanxi Datong University,Datong 037009,China)

机构地区：[1]太原理工大学新材料界面科学与工程教育部重点实验室,山西太原030024 [2]山西大同大学微结构功能材料固体物理研究所山西省重点实验室,山西大同037009

出　　处：《发光学报》2023年第8期1380-1389,共10页Chinese Journal of Luminescence

基　　金：国家自然科学基金(61705156,60976018,61605138);国家基金委区域联合基金(U21A20492)。

摘　　要：通过分子构型和分子间相互作用是调节材料的发光颜色和光物理性能的重要途径之一。本文以苯并噻二唑为受体(A)、三苯胺(TPA)和二甲基吖啶(DMAC)为给体(D),设计并合成了两种D‐A‐D和D‐A‐D′型的发光分子,分别为TBT和DBT。两种分子均表现出同质多晶现象(TBT‐O:λ_(PL)=593 nm和TBT‐R:λ_(PL)=616 nm;DBT‐Y:λ_(PL)=570 nm,DBT‐O:λ_(PL)=605 nm和DBT‐R:λ_(PL)=642 nm)。在外界刺激下,对称结构的TBT为四色的可逆光色转换,非对称的DBT分子则表现为不可逆光色转换。本研究为基于苯并噻二唑类刺激响应发光材料提供了重要的分子设计思路。It is a feasible way to adjust emission behaviors by molecular conformation and intermolecular interactions.Herein,two multifunctional materials,4,4′-(benzo[c][1,2,5]thiadiazole-4,7-diyl)bis(N,N-diphenylaniline)and 4-(7-(9,9-dimethylacridin-10(9H)-yl)benzo[c][1,2,5]thiadiazol-4-yl)-N,N-diphenylaniline,namely TBT and DBT,with donor-acceptor-donor(D-A-D)and D-A-D′structures composed of 2,1,3-benzothiadiazole(BT)acceptor and the different donors of triphenylamine(TPA)and 9,9-dimethyl-9,10-dihydroacridine(DMAC)were synthesized.These materials exhibit not only polymorphism-dependent emission but also multicolor luminescence switch in response to the external stimulus.The high-contrast crystal-dependent emission behaviors of TBT(TBT‐O:λ_(PL)=593 nm and TBT‐R:λ_(PL)=616 nm)and DBT(DBT‐Y:λ_(PL)=570 nm,DBT‐O:λ_(PL)=605 nm and DBTR:λ_(PL)=642 nm)were observed.TBT with double TPA groups exhibits four reversible color switches,while DBT with TPA and DMAC groups shows irreversible bicolor change.

关 键 词：苯并噻唑 机械响应 多色发光 

分 类 号：O482.31[理学—固体物理]