1-((12-Bromododecyl)oxy)-4-((4-(4-pentylcyclohexyl)phenyl)ethynyl) benzene: Liquid crystal with aggregation-induced emission characteristics
1-((12-Bromododecyl)oxy)-4-((4-(4-pentylcyclohexyl)phenyl)ethynyl) benzene: Liquid crystal with aggregation-induced emission characteristics
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DOI：
10.1007/s11426-013-4950-5
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
Yafei Chen;Jielan Lin;W. Yuan;Zhenqiang Yu;J. Lam;B. Tang
中科院分区：
文献类型：
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作者：
Yafei Chen;Jielan Lin;W. Yuan;Zhenqiang Yu;J. Lam;B. Tang
发光液晶有望解决猝灭引起的聚集与液晶聚集或自组织的要求之间的矛盾。在此，我们发展了一种新的策略，将聚集诱导发射(AIE)现象应用到LCS的分子设计中。本文合成了一种具有AIE特性的甲壳胺类液晶，并用1H、13C核磁共振和基质辅助激光解吸电离飞行时间谱(MALDI-TOF)对其化学结构进行了表征。用荧光光谱研究了其荧光行为，用差示扫描量热法(DSC)、偏光显微镜(POM)研究了其液晶相行为。用X射线衍射法测定了其晶体结构，确定了其空间群为P1。结果表明，样品具有AIE活性，冷却过程中的LC相序为向列相、近晶C相和近晶B相。
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.