Three kinds of fluorinated Schiff's base esters, 4-allyloxy-2-X-6-X-benzoic acid 4+2, 3, 4-trifluorophenylimino)methyl]phenyl ester, where X=H or F, were synthesized and characterized. Their chemical structures were identified by Fourier transform infrared spectroscopy (FTIR) and H-1 nuclear magnetic resonance (H-1 NMR). Their mesomorphic properties were studied by polarized optical microscopy (POM) and differential scanning calorimetry (DSC). It was found that all the three compounds exhibited enantiotropic nematic phases only. And their clearing point temperature and thermal range of mesophase decreased with the number of fluorine atoms on the rigid core of the compounds; while their melting point temperature showed no distinct regularity.
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外文
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出版当年[2006]版：
大类|4 区工程技术
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无
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出版当年[2005]版：
Q2MINING & MINERAL PROCESSINGQ3METALLURGY & METALLURGICAL ENGINEERINGQ4MATERIALS SCIENCE, MULTIDISCIPLINARY
第一作者机构：[1]Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
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推荐引用方式(GB/T 7714)：
Wei Qiang,Zhu Siquan,Shi Lin,et al.Synthesis and mesomorphic properties of fluorinated Schiff's base liquid crystals containing vinyl end groups[J].JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING.2007,14(4):373-377.doi:10.1016/S1005-8850(07)60074-7.
APA：
Wei, Qiang,Zhu, Siquan,Shi, Lin,Zhang, Lipei,Yuan, Xiaotao&Yang, Huai.(2007).Synthesis and mesomorphic properties of fluorinated Schiff's base liquid crystals containing vinyl end groups.JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING,14,(4)
MLA：
Wei, Qiang,et al."Synthesis and mesomorphic properties of fluorinated Schiff's base liquid crystals containing vinyl end groups".JOURNAL OF UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING 14..4(2007):373-377
