Synthesis and mesomorphism of ether-ester mixed tail C3-symmetrical truxene discotic liquid crystals
Synthesis and mesomorphism of ether-ester mixed tail C3-symmetrical truxene discotic liquid crystals
复制标题
醚酯混合尾C3-对称Trxene盘状液晶的合成与介晶作用
DOI：
10.1080/02678290903215337
复制
发表时间：
2010-01-01
期刊：
影响因子：
2.2
通讯作者：
Zhao, Ke-Qing
中科院分区：
文献类型：
--
作者：
Li, Li-Li;Hu, Ping;Zhao, Ke-Qing
Truxene discotic liquid crystals are interesting for their polymesomorphism and as organic semiconductor candidates. We developed an efficient synthetic method for C3-symmetrical truxene derivative 2,7,12-trihydroxy-3,8,13-trimethoxytruxene 5, and further a series of ether-ester mixed tail truxene discogens HTn, TR(OMe)3[OOCC6H2(OCnH2n+1)3]3 were prepared. The truxene discogens HTn (n = 4-8, 10, 12) were characterised by using 1H and 13C nuclear magnetic resonance, and high-resolution mass spectrometry. Their thermal stability was studied with thermal gravimetric analysis and their liquid crystal properties were investigated by using polarising optical microscopy, differential scanning calorimetry and X-ray diffraction. They exhibit a hexagonal columnar (Colh) mesophase in fairly wide temperature ranges.
