Novel Electric Responsive Columnar Liquid Crystals based on Perylene Tetra sec-alkyl Ester Derivatives
Novel Electric Responsive Columnar Liquid Crystals based on Perylene Tetra sec-alkyl Ester Derivatives
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DOI：
10.1071/ch13057
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发表时间：
2013-07
影响因子：
1.1
通讯作者：
Lei Wang;Qing Cui;Xiaofang Chen;Yang Li;Zhengqiang Li;Dong Wang;Huai Yang
中科院分区：
文献类型：
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作者：
Lei Wang;Qing Cui;Xiaofang Chen;Yang Li;Zhengqiang Li;Dong Wang;Huai Yang
设计并合成了一系列新型的苝四仲烷基酯化合物。研究了其物理化学性质，紫外吸收光谱和荧光发射光谱呈镜像关系。PS8的荧光量子产率最高，而PS8在混合溶剂中聚集态的荧光被猝灭。此外，还研究了它们的电化学性质，并通过循环伏安法测定了它们的最高占据分子轨道和最低未占据分子轨道能级。最重要的结果是PS8在室温下表现出柱状相，并且对电场有响应。PS8可以垂直于所施加的电场定向。此外，通过热退火，在氧化铟锡覆盖的玻璃上实现了高度取向的面对面对准。
A series of novel perylene tetra sec-alkyl ester compounds were successfully designed and synthesised. The photophysical properties were investigated and the UV absorption and fluorescence emission spectra displayed a mirror-image relationship. The compound PS8 showed the highest fluorescent quantum yield, while the fluorescence of PS8 was quenched in the aggregated state in mixed solvents. Moreover, the electrochemical properties of the perylene derivatives were studied to determine the molecules’ highest occupied molecular orbital and lowest unoccupied molecular orbital levels by cyclic voltammetry. The most important result was that PS8 exhibited a columnar phase at room temperature and was responsive to an electric field. PS8 could perpendicularly orient to an applied electric field. In addition, highly oriented face-on alignment was achieved on indium tin oxide-covered glass by thermal annealing.