Solvents/photo/pillar[5]arene triple responsive morphology and luminescence transformation from an amphiphilic dicyanostilbene-functionalized thiophene  

作　　者：Yang Wang Haibo Zhong Juan Yang Yong Yao Liang Li 

机构地区：[1]School of Chemistry and Chemical Engineering,Nantong University,Nantong 226019,China [2]School of Chemical and Environmental Engineering,Shanghai Institute of Technology,Shanghai 201418,China [3]Nantong City Center for Disease Control and Prevention,Nantong 226019,China

出　　处：《Chinese Chemical Letters》2023年第12期200-203,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.21801139,32101215,22007052);Natural Science Foundation of Jiangsu Province(Nos.BK20180942,BK20190917)。

摘　　要：α-Cyanostilbene(CS)based organic luminescent materials with eficient electrical conductivity,aggregation-induced enhanced emission,and controllable multi-colour emission properties,have been aroused wide attention by scientists over the past few years.Self-assembly of cS-motif in aqueous me-dia refers to an environment-friendly method for preparing luminescent materials.However,it is still challenging to control the intrinsic hydrophobic properties of the organic components in aqueous media.In this study,an amphiphilic dicyanostilbene-functionalized thiophene(ACSTP)derivative was synthe-sized.Z-AcSTP was identified to dissolve in different organic solvents,accompanied with strong and tun-able fluorescence emission.However,when Z-AcSTP was dispersed in water,it was self-assembled into nanofibers,and the fluorescence was red shifted,accompanied with sharp decrease of intensity com-pared with that in DMSO.Furthermore,Z-form of ACSTP to its E-form under 365 nm irradiation led to the morphology transformation from nanofibers to nanosheets.Notably,upon addition of water-soluble pillar[5]arene(wP5),the nanofibers were transformed into fluorescent hollow particles due to the host-guest interactions between the pyridinium group and WP5 and the obtained fluorescent particles can be further applied in living cell imaging.

关 键 词：arenes Host-guest interactions AMPHIPHILIC Self-assembly Cell-imaging 

分 类 号：O626[理学—有机化学] O625.1[理学—化学] O657.3