Homeotropic alignment through charge-transfer-induced columnar mesophase formation in an unsymmetrically substituted triphenylene derivative

Li, Juanjuan, He, Zhiqun, Zhao, Huan, Gopee, Hemant, Kong, Xiangfei, Xu, Min, An, Xinxin, Jing, Xiping and Cammidge, Andrew N. (2010) Homeotropic alignment through charge-transfer-induced columnar mesophase formation in an unsymmetrically substituted triphenylene derivative. Pure and Applied Chemistry, 82 (11). 1993–2003. ISSN 0033-4545

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Abstract

An unsymmetrically substituted triphenylene, with two adjacent chloroethoxyethyl lateral flexible chains, was synthesized and characterized. Although this compound showed no mesomorphic behavior, it formed a donor acceptor charge-transfer complex with 2,4,7-trinitrofluorenone (TNF). The resulting I: I complex has been investigated using UV-vis and IR spectroscopy, optical microscopy, thermal analysis, and X-ray diffraction. A columnar mesophase with hexagonal symmetry was found. More interestingly, this charge-transfer complex can be easily aligned on a glass surface in a homeotropic orientation, which is stable at room temperature (RT) and over a wide temperature range.

Item Type: Article
Faculty \ School: Faculty of Science > School of Chemistry
Depositing User: Rachel Smith
Date Deposited: 31 Jan 2011 15:57
Last Modified: 21 Apr 2020 17:15
URI: https://ueaeprints.uea.ac.uk/id/eprint/10970
DOI: 10.1351/PAC-CON-09-12-17

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