Phase behaviors of binary mixtures composed of electron-rich and electron-poor triphenylene discotic liquid crystals
Phase behaviors of binary mixtures composed of electron-rich and electron-poor triphenylene discotic liquid crystals
复制标题
富电子和缺电子苯并菲盘状液晶组成的二元混合物的相行为
DOI：
10.1088/1674-1056/25/9/096402
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发表时间：
2016
影响因子：
1.7
通讯作者：
Zhao, Ke-Qing
中科院分区：
文献类型：
--
作者：
Xiao, Bo;Bai, Xiao-Yan;Zeng, Qing-Dao;Zhao, Ke-Qing
Disk-like liquid crystals (DLCs) can self-assemble to ordered columnar mesophases and are intriguing one-dimensional organic semiconductors with high charge carrier mobility. To improve their applicable property of mesomorphic temperature ranges, we exploit the binary mixtures of electronic donor-acceptor DLC materials. The electron-rich 2,3,6,7,10,11-hexakis(alkoxy)triphenylenes (C4, C6, C8, C10, C12) and an electron-deficient tetrapentyl triphenylene-2,3,6,10-tetracarboxylate have been prepared and their binary mixtures have been investigated. The mesomorphism of the 1:1 (molar ratio) mixtures has been characterized by polarizing optical microscopy (POM), differential scanning calorimetry (DSC), and small angel x-ray scattering (SAXS). The self-assembled monolayer structure of a discogen on a solid-liquid interface has been imaged by the high resolution scanning tunneling microscopy (STM). The match of peripheral chain length has important influence on the mesomorphism of the binary mixtures.
