Issue 45, 2013
From the journal:

Soft Matter

Synthesis and properties of siloxane modified perylene bisimide discotic liquid crystals†

Tingjie Zhang,a   Dianming Sun,a   Xiangkui Ren,b   Lili Liu,a   Guanyin Wen,a   Zhongjie Ren,*a   Huihui Lia  and  Shouke Yan*a  

* Corresponding authors

a State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing, China
E-mail: skyan@mail.buct.edu.cn, renzj@mail.buct.edu.cn
Fax: +86-10-6445 5928
Tel: +86-10-6445 5928

b School of Chemical Engineering and Technology, Tianjin University, Tianjin, China

Abstract

A series of symmetric and asymmetric 1,6,7,12-tetrachloroperylene bisimides (PBICls) were synthesized and modified by siloxane substituents at the imide nitrogen atom. Siloxane substitutions do not apparently affect the electronic properties of PBICIs as demonstrated by CV experiments. They display both thermotropic and lyotropic liquid crystalline behaviors. The effect of different siloxane substituents on their liquid crystal structures was investigated in detail. Small angle X-ray scattering indicates that PBICls adopt hexagonal columnar packing in thermotropic liquid crystals. In addition, PBICls exhibit good optical properties, good solubility and film-forming ability. Thus the oriented films of PBICl liquid crystals could be easily fabricated by mechanical shear, which show anisotropic properties in UV-vis absorption spectra.

Graphical abstract: Synthesis and properties of siloxane modified perylene bisimide discotic liquid crystals

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Article information

DOI
https://doi.org/10.1039/C3SM52054D
Article type
Paper
Submitted
30 Jul 2013
Accepted
06 Sep 2013
First published
06 Sep 2013

Soft Matter, 2013,9, 10739-10745

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Synthesis and properties of siloxane modified perylene bisimide discotic liquid crystals

T. Zhang, D. Sun, X. Ren, L. Liu, G. Wen, Z. Ren, H. Li and S. Yan, Soft Matter, 2013, 9, 10739 DOI: 10.1039/C3SM52054D

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