| 5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔的相转变与相结构 |
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| 引用本文： | 余振强,朱才镇,田赛,刘剑洪,唐本忠. 5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔的相转变与相结构[J]. 物理化学学报, 2010, 26(4): 817-821. DOI: 10.3866/PKU.WHXB20100405 |
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| 作者姓名： | 余振强 朱才镇 田赛 刘剑洪 唐本忠 |
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| 作者单位： | Shenzhen Key Laboratory of Functional Polymer, School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China; Department of Chemistry, The Hong Kong University of Science & Technology, Hong Kong, P. R. China |
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| 基金项目： | 广东省自然科学基金，深圳大学青年基金 |
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| 摘 要： | 采用差示扫描量热(DSC)、一维(1D)广角X射线衍射(WAXD)、热台偏光显微镜(PLM-hotstage)等研究手段对含联苯液晶基元的侧链液晶聚炔单体5-{[(4′-正戊基氧-4-联苯基基)羰基]氧}-1-戊炔(A3EO5)的本体相转变和相结构进行了研究.DSC和1D-WAXD实验结果表明,A3EO5在升温和降温过程中均呈现四个相转变过程,形成双向性液晶.样品从各向同性态降温至室温过程中,首先形成近晶A相,随后进入层内排列具有准长程有序的近晶B相,继续降温将形成层内为正交排列的近晶E相,在此之后样品进入晶相.PLM结果指出样品在各向同性态降温过程中分别形成球状织构、角锥织构和同心圆弧织构.
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| 关 键 词： | 液晶 相结构 相转变 X射线衍射 近晶相 |
| 收稿时间： | 2009-10-15 |
| 修稿时间： | 2009-11-23 |
Phase Transitions and Structures of 5-{[(4'-Pentyloxy-4-biphenylyl) carbonyl]oxy}-1-pentyne |
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| YU Zhen-Qiang,ZHU Cai-Zhen TIAN Sai LIU Jian-Hong LAM Jacky Wing Yip TANG Ben-Zhong. Phase Transitions and Structures of 5-{[(4'-Pentyloxy-4-biphenylyl) carbonyl]oxy}-1-pentyne[J]. Acta Physico-Chimica Sinica, 2010, 26(4): 817-821. DOI: 10.3866/PKU.WHXB20100405 |
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| Authors: | YU Zhen-Qiang ZHU Cai-Zhen TIAN Sai LIU Jian-Hong LAM Jacky Wing Yip TANG Ben-Zhong |
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| Affiliation: | Shenzhen Key Laboratory of Functional Polymer, School of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen 518060, Guangdong Province, P. R. China; Department of Chemistry, The Hong Kong University of Science & Technology, Hong Kong, P. R. China |
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| Abstract: | Phase transitions and structures of the monomer of side-chain liquid crystalline polyacetylene containing biphenyl mesogen,namely,5-{[(4'-pentyloxy-4-biphenylyl)carbonyl]oxy}-1-pentyne (A3EO5) were investigated by differential scanning calorimetry (DSC),one dimensional (1D) wide angle X-ray diffraction (WAXD),and polarized light microscopy equipped with hot-stage (PLM-hot stage).DSC and 1D-WAXD results show that A3EO5 forms an enantiotropic liquid crystal and displays four transitions during the cooling and... |
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| Keywords: | Liquid crystal Phase structure Phase transition X-ray diffraction Smectic phase |
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