writer：Hui Jing, Lin Lu, Yakai Feng, Jun-Feng Zheng,* Liandong Deng, Er-Qiang Chen,* and Xiang-Kui Ren*
keywords：Tetraphenylethylene, AIE, Liquid Crystal
source：期刊
specific source：Journal of Physical Chemistry C
Issue time：2016年

A novel tetraphenylethylene material with liquid crystalline (LC) helical structure and aggregationinduced emission (AIE) property was prepared by ionic selfassembly (ISA). The AIE activity, phase behavior, selfassembly structure, and molecular packing behavior of the complex were then elucidated via a combination of different experimental techniques such as UV?vis absorption spectra, photoluminescence spectra, differential scanning calorimetry, polarized optical microscopy, one- and two-dimensional X-ray diffraction, and Fourier transform infrared spectroscopy. The experimental results reveal that the ISA complex possesses high-efficiency luminescent property with quantum yield as high as 46% in solid state. Meanwhile, the complex could self-assemble into different interesting structures which are sensitive to peripheral chain motions. During heating, the complex takes a low-ordered helical supramolecular structure at ambient temperature and then forms another LC phase with high-ordered helical molecular stacking. These ordered hierarchical structures, in combination with the liquid crystallinity and excellent AIE property of the ISA complex, make it a promising material for fabrication of luminescent devices.

https://pubs.acs.org.ccindex.cn/doi/abs/10.1021/acs.jpcc.6b09901