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Liquid Crystals Volume 43, 2016 - Issue 10
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Original Articles

Synthesis and characterisation of liquid crystalline anthraquinone dyes with excellent dichroism and solubility

Wanshu ZhangDepartment of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing, P. R. ChinaCorrespondence[email protected]
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Cuihong ZhangDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. ChinaView further author information
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Kuntao ChenCollege of Materials Science and Engineering, Tianjin University, Tianjin, P. R. ChinaView further author information
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Zhendong WangDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. ChinaView further author information
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Meng WangDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. ChinaView further author information
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Hangjun DingDepartment of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing, P. R. ChinaView further author information
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Jiumei XiaoDepartment of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing, P. R. ChinaView further author information
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Dengke YangChemical Physics Interdisciplinary Program and Liquid Crystal Institute, Kent State University, Kent, OH, USAView further author information
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Haifeng YuDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. ChinaView further author information
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Lanying ZhangDepartment of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China;Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, P.R. ChinaView further author information
&
Huai YangDepartment of Materials Physics and Chemistry, University of Science and Technology Beijing, Beijing, P. R. China;Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, P. R. China;Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, Peking University, Beijing, P.R. ChinaCorrespondence[email protected]
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Pages 1307-1314 | Received 01 Dec 2015, Accepted 27 Mar 2016, Published online: 13 May 2016
 
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ABSTRACT

A novel series of dichroic anthraquinone dyes have been successfully synthesised with conventional Sonogashira reaction. These synthesised anthraquinone dyes were found to have high dichroic ratios, good solubilities, excellent hues and to be potential candidates for guest–host liquid crystal displays. The dichroic ratio is as high as 13.26, which is in the top level of the anthraquinone dyes reported so far. In addition, this paper provides an effective method to modulate the optic properties of anthraquinone dyes from the molecular level via the introduction of different radicals on the anthraquinone cores.

GRAPHICAL ABSTRACT

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This work was supported by the Major Project of International Cooperation of the Ministry of Science and Technology [grant no. 2013DFB50340], the Project of Beijing Science and Technology Program [Grant no. Z151100003315023, Z141100003814011] and the National Natural Science Foundation [Grant no. 51273022, 51272026, 51333001, 51573003].

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