A new gelator based on tetraphenylethylene and diphenylalanine:Gel formation and reversible fluorescence tuning  

作　　者：SUN Fei ZHANG GuanXin ZHANG DeQing 

机构地区：[1]Beijing National Laboratory for Molecular Sciences,Organic Solids Laboratory,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,China

出　　处：《Chinese Science Bulletin》2012年第33期4284-4288,共5页

基　　金：supported by the National Natural Science Foundation of China (50973120,21021091);the National Basic Research Program of China (2011CB808401);Chinese Academy of Sciences

摘　　要：A new gelator 1 based on tetraphenylethylene(TPE) and diphenylalanine was designed and synthesized.Compound 1 was non-emissive in solution,but its fluorescence turned on after the formation of gels,due to the aggregation-induced emission(AIE) feature of TPE.Interestingly,the fluorescence was reversibly switched "on-off" upon the "gel-sol" transition.Scanning electron microscope(SEM),confocal laser scanning microscope(CLSM) and X-ray diffraction(XRD) were employed to study the gels.A new gelator 1 based on tetraphenylethylene （TPE） and diphenylalanine was designed and synthesized. Compound 1 was non-emissive in solution, but its fluorescence turned on after the formation of gels, due to the aggregation-induced emission （AIE） feature of TPE. Interestingly, the fluorescence was reversibly switched ＂on-off＇ upon the ＂gel-sol＂ transition. Scanning electron microscope （SEM）, confocal laser scanning microscope （CLSM） and X-ray diffraction （XRD） were employed to study the gels.

关 键 词：凝胶形成 二苯基 胶凝剂 荧光 可逆 基础 共焦激光扫描显微镜 扫描电子显微镜 

分 类 号：O648.17[理学—物理化学]