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| Synthesis of rod-like bis-ester liquid crystals and their influence on photoelectric properties of liquid crystalline materials |
| Min Yan Zhenga, Yong Sheng Weia, Zhong Wei Anb, Shan Wanga |
a Department of Chemistry, Xianyang Normal University, Xianyang 712000, China;
b School of Chemistry & Material Science, Shaanxi Normal University, Xi'an 710062, China |
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Abstract Six novel rod-like magnetic liquid crystals have been prepared, in which trans-bicyclohexyl or trans-cyclohexylphenyl and biphenylcarboxylic acid phenyl ester mesogenic cores with n-propyl and n-pentyl substituents were terminated by 4-hydroxyl-TEMPO (TEMPO=2,2,6,6-tetramethylpiperidine-1-oxy). Their structures were confirmed by elemental analysis, IR and MS.Determined by SQUID, EPR, DSC and HS-POM (heat stage polarizing optical microscope), the six compounds all have both magnetic and liquid crystalline properties; their temperature ranges of mesophase were from 16.0 to 24.8℃, and the magnetic liquid crystal molecules could obviously improve the response sensitivity of liquid crystal materials.
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Received: 15 October 2008
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| Fund:This work was supported by Natural Science Foundation of Shaanxi Province Educational Department (No.07JK426) and Science Foundation of Xianyang Normal University (No.07XSYK219). |
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Corresponding Authors:
Min Yan Zheng,E-mail:zmy71@126.com
E-mail: zmy71@126.com
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