| 含乙撑桥键二苯炔四环液晶的合成及性能 |
| |
| 引用本文： | 陈然,安忠维,陈新兵,陈沛.含乙撑桥键二苯炔四环液晶的合成及性能[J].高等学校化学学报,2014,35(7):1433. |
| |
| 作者姓名： | 陈然 安忠维 陈新兵 陈沛 |
| |
| 作者单位： | 1. 陕西师范大学应用表面与胶体化学教育部重点实验室, 材料科学与工程学院, 西安 7101192. 西安近代化学研究所, 西安 710065 |
| |
| 基金项目： | 陕西省自然科学基金(批准号:2012JM2002);陕西省科技攻关项目(批准号:2012K08-09);中央高校团队项目(批准号:GK261001108,GK261001009);中央高校基本科研业务费专项资金(批准号:GK201101003,GK201302036,GK201302037)资助~~ |
| |
| 摘 要： | 以4-烷基反式环己基甲酸为原料, 经格氏、 黄鸣龙、 碘代及“一锅法”Sonogashira偶联等反应, 制备了10个含乙撑桥键二苯炔四环液晶化合物, 其结构经IR, NMR和MS确认. 利用差示扫描量热仪(DSC)、 偏光显微镜(POM)和阿贝折光仪对目标化合物进行了性能测试. 结果表明, 目标化合物具有高清亮点(220~240 ℃)、 宽向列相区间(59.6~99.6 ℃)和大光学各向异性(Δn>0.3), 其性能可满足液晶光学的应用要求.
|
| 关 键 词： | 高清亮点 炔桥键 双折射率 太赫兹 |
| 收稿时间： | 2013-12-16 |
Syntheses and Properties of Four-ring Liquid Crystals with Ethylene and Internal Alkyne Bridge† |
| |
| CHEN Ran,AN Zhongwei,CHEN Xinbing,CHEN Pei.Syntheses and Properties of Four-ring Liquid Crystals with Ethylene and Internal Alkyne Bridge†[J].Chemical Research In Chinese Universities,2014,35(7):1433. |
| |
| Authors: | CHEN Ran AN Zhongwei CHEN Xinbing CHEN Pei |
| |
| Institution: | 1. Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an 710119, China2. Xi'an Modern Chemistry Research Institute, Xi'an 710065, China |
| |
| Abstract: | Ten four-ring liquid crystals with ethylene and internal alkyne bridge were synthesized via Grignard reaction, Huang Minglong reduction, iodination, “one-pot” Sonogashira cross-coupling reaction with trans-4-alkyl-cyclohexane-carboxylic-acid as the starting substrate. The structures of the compounds were confirmed by infrared spectrometry(IR), nuclear magnetic resonance(NMR) and mass spectra(MS). The differential scanning calorimetry(DSC), polarising optical microscopy(POM) and Abbe refractometer were used to measure their properties. The results show that the compounds possess high clearing point(220—240 ℃), broad nematic phase(59.6—99.6 ℃) and high birefringence(Δn>0.3). These properties match the requirement of liquid crystal optics. |
| |
| Keywords: | High clearing point Alkyne-bridge Birefringence Terahertz |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高等学校化学学报》浏览原始摘要信息 |
| 点击此处可从《高等学校化学学报》下载免费的PDF全文 |
|
