1-((12-Bromododecyl)oxy)-4-((4-(4-pentylcyclohexyl)phenyl)ethynyl) benzene: Liquid crystal with aggregation-induced emission characteristics  

作　　者：CHEN YaFei LIN JieSheng YUAN WangZhang YU ZhenQiang LAM Jacky WingYip TANG Ben Zhong 

机构地区：[1]Shenzhen Key Laboratory of Functional Polymers,School of Chemistry and Chemical Engineering,Shenzhen University [2]National Institutes for Food and Drug Control [3]School of Chemistry and Chemical engineering,Shanghai Jiao Tong University [4]Department of Chemistry,The Hong Kong University of Science & Technology

出　　处：《Science China Chemistry》2013年第9期1191-1196,共6页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China (21074073, 21104044);Shenzhen Science and Technology Bureau (ZYC201105130112A, JC201105130384A)

摘　　要：The luminescent liquid crystals (LLCs) are expected to solve the conflicts between the aggregation caused quenching and the requirement of aggregation or self-organization for LCs. Herein, we developed a new strategy of applying aggregation-induced emission (AIE) phenomenon to the molecular design of LCs towards LLCs. In this report, a calamitic liquid crystal based on tolane with AIE characteristics was successfully synthesized and the chemical structure was characterized by 1H, 13C NMR, and matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) high-resolution mass spectra. The fluorescence behavior was studied by fluorescence spectroscopy and the liquid crystal phase behaviors were investigated by differential scanning calorimetry (DSC), polarized optical microscopy (POM). The crystal structure was obtained by X-ray diffraction crystallography with P1 space group. Results demonstrated that the sample was AIE active and the LC phases sequence during cooling was nematic, smectic C and smectic B phase.The luminescent liquid crystals （LLCs） are expected to solve the conflicts between the aggregation caused quenching and the requirement of aggregation or self-organization for LCs. Herein, we developed a new strategy of applying aggregation-induced emission （AIE） phenomenon to the molecular design of LCs towards LLCs. In this report, a calamitic liquid crystal based on tolane with AIE characteristics was successfully synthesized and the chemical structure was characterized by 1H, 13C NMR, and matrix-assisted laser desorption/ionization time-of-flight （MALDI-TOF） high-resolution mass spectra. The fluorescence behavior was studied by fluorescence spectroscopy and the liquid crystal phase behaviors were investigated by differential scanning calorimetry （DSC）, polarized optical microscopy （POM）. The crystal structure was obtained by X-ray diffraction crystallography with P1 space group. Results demonstrated that the sample was AIE active and the LC phases sequence during cooling was nematic, smectic C and smectic B phase.

关 键 词：aggregation-induced emission TOLANE liquid crystal phase behavior 

分 类 号：O753.2[理学—晶体学] TN112[电子电信—物理电子学]