[1]何传新,李翠华,钱练安,等.四氢吡咯烷离子液体液晶研究[J].深圳大学学报理工版,2012,29(No.4(283-376)):353-357.[doi:10.3724/SP.J.1249.2012.04353]
 HE Chuan-xin,LI Cui-hua,QIAN Lian-an,et al.Study on ionic liquid crystalline of tetrahedron pyrrolidinium[J].Journal of Shenzhen University Science and Engineering,2012,29(No.4(283-376)):353-357.[doi:10.3724/SP.J.1249.2012.04353]
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四氢吡咯烷离子液体液晶研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第29卷
期数:
2012年No.4(283-376)
页码:
353-357
栏目:
化学与化工
出版日期:
2012-07-25

文章信息/Info

Title:
Study on ionic liquid crystalline of tetrahedron pyrrolidinium
文章编号:
20120413
作者:
何传新李翠华钱练安何晋华刘剑洪张黔玲
深圳大学化学与化工学院 深圳市功能高分子重点实验室,深圳 518060
Author(s):
HE Chuan-xin LI Cui-hua QIAN Lian-an HE Jin-hua LIU Jian-hong and ZHANG Qian-ling
College of Chemistry and Chemical Engineering, Shenzhen University, Shenzhen key Laboratory of Functional Polymer, Shenzhen 518060, P. R. China
关键词:
液晶自组装离子液体四氢吡咯烷离子热致液晶近晶相
Keywords:
liquid crystals self assembly ionic liquids tetrahedron pyrrolidinium thermotropic liquid crystals smectic phase
分类号:
O 6
DOI:
10.3724/SP.J.1249.2012.04353
文献标志码:
A
摘要:
合成了亲水性和疏水性的饱和杂环类离子液体N-十六烷基-N-甲基四氢吡咯烷溴化物与四氟合硼酸盐, 采用偏光显微镜、变温X射线衍射仪和热化学等方法,研究两类离子液体液晶结构、自组装过程和相转变等特性,研究负离子对饱和杂环类离子液体自组装行为的影响. 结果发现,该两种离子液体均可在熔点以上形成层状液晶,负离子结构与大小对离子液体液晶的结构与性质具有非常重要的影响,BF-4比Br-体积大,使吡咯烷环和环上的长碳链以较大的间隔排列,形成分子在近晶平面层内有序分布,结构非常接近固态的近晶型液晶.
Abstract:
Hydrophilic and hydrophobic ionic liquid crystals, N-methyl-N-hexadecyl tetrahedron pyrrolidinium bromide and tetrafluoroborate were synthesized. The liquid crystal structure, self-assembly process and phase transition were studied by polarizing optical microscope, temperature-dependent wide X-ray diffraction, thermal gravity analysis and differential scanning calorimetry. Resultsshowedthatthetwoionicliquidsexhibitthermotropic liquid crystalline. In comparison with bromide, liquid crystalline of tetrafluoroborate exhibited lower onset temperature of the smectic phase decreasing to 51.4 ℃ and more regular molecule assembly which was very close to the solid state. The reason is due to the larger size of anion which affording larger space for the long carbon lines to assemble in a more regular style. At the same time, the larger space between the IL molecules led to weaker molecular interaction, resulting in a lower temperature range of liquid crystalline. It demonstrates that the structure and symmetry of anion play important roles in the structure and properties of liquid crystalline.

参考文献/References:

[1] Shigeo K, Yukiko H, Keiki K. Hydrogen-bonded ionic liquid crystals: pyridinylmethylimidazolium as a versatile building block[J]. Tetrahedron Letters, 2010, 51(5): 1508-1511.
[2] Eastoe J, Gold S, Rogers S E, et al. Ionic liquid-in-oil microemulsions[J]. Journal of the American Chemical Society, 2005, 127(20): 7302-7311.
[3] Kumar S, Paul S K. Ionic discotic liquid crystals: synthesis and characterization of pyridinium bromides containing a triphenylene core[J]. Tetrahedron Letters, 2005, 46(23): 4127-4131.
[4] Bowlas C J, Bruce D W,Seddon K R. Liquid-crystalline ionic liquids[J]. Chemcial Communication, 1996(14): 1625-1626.
[5] Bradley A E, Hardacre C, Holbrey J D, et al. Small-angle X-ray scattering studies of liquid crystalline 1-alkyl-3-methylimidazolium salts[J]. Chemistry of Materials, 2002, 14(2): 629-635.
[6] Zhou Q, Fitagerald K, Boyle P D, et al. Phase behavior and crystalline phases of ionic liquid-lithium salt mixtures with 1-Alkyl-3-methylimidazolium salts[J]. Chemistry of Materials, 2010, 22(3): 1203-1208.
[7] LI Cui-hua, QIAN Lian-an, CHEN Jia-hui, et al. Thermotropicliquidcrystalsof1, 2-dimethyl-3-hexadecylimidazolium hexafluorophosphate[J]. Journal of Shenzhen University Science and Engineering, 2010, 27(3): 277-279.(in Chinese)
李翠华,钱练安,陈家辉,等. 1,2-二甲基-3-十六烷基咪唑六氟磷酸盐的热致液晶研究[J]. 深圳大学学报理工版, 2010, 27(3): 277-279.
[8] Bazito F C, Kawana Y, Torresi R M. Synthesis and characterization of two ionic liquids with emphasis on their chemical stability towards metallic lithium[J]. Electrochimica Acta, 2007, 52(23): 6427-6437.
[9] LI Cui-hua, HE Jin-hua, LIU Jian-hong, et al. Self-assembly of lyotropic liquid crystal phases in ternary systems of 1,2-dimethyl-3-hexadecylimidazolium bromide/ 1-decanol/water[J]. Journal of Colloid Interface Science, 2010, 342(2): 354-360.
[10] LI Cui-hua, HE Jin-hua, LIU Jian-hong, et al. Liquid crystalline phases of 1,2-dimethyl-3-hexadecyl- imidazolium bromide and binary mixtures with water[J]. Journal of Colloid Interface Science, 2010, 349(9): 224-229.
[11] SUNZheng-min,LIGuo-zhen,DONGChu-chuan.Differencebetween liquid crystalline phases[J]. Journal of Eastchina Chemical Engineering College, 1989, 15(6): 795-800.(in Chinese)
孙政民,李国镇,董除川. 液晶相的区别[J]. 华东化工学院学报,1989, 15(6): 795-800.
[12] LI Cui-hua, HE Jin-hua, LIU Jian-hong, et al. Ionic Liquid crystalline phases in 3-hexadecylimidazolium bromide and binary mixtures with 1-Decanol[J]. Journal of Colloid Interface Science, 2011, 359(9): 474-480.

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备注/Memo

备注/Memo:
基金项目:国家安全重大基础研究资助项目(613142020201);深圳市科技研发资金项目(JC201005280504A)
作者简介:何传新(1983-),男(汉族), 安徽省宣城市人,深圳大学讲师、博士. E-mail: hcx2002@mail.ustc.edu.cn
引文:何传新,李翠华,钱练安,等.四氢吡咯烷离子液体液晶研究[J]. 深圳大学学报理工版,2012,29(4):353-357.
Received:2012-01-13;Accepted:2012-06-19
Foundation:973 Foundation of National Defense(613142020201); Scientific and Technological Research and Development Foundation of Shenzhen (JC201005280504A)
Corresponding author:Professor LI Cui-hua. E-mail: licuihuasz@163.com
Citation:HE Chuan-xin, LI Cui-hua, QIAN Lian-an, et al. Study on ionic liquid crystalline of tetrahedron pyrrolidinium[J]. Journal of Shenzhen University Science and Engineering, 2012, 29(4): 353-357.(in Chinese)
更新日期/Last Update: 2012-07-29