作者：
章思汗 ZHANG Si-han;刘可庆 LIU Ke-qing;张智勇 ZHANG Zhi-yong;张开诚 ZHANG Kai-cheng;戴志群 DAI Zhi-qun;...
期刊：
液晶与显示,2015年30(5):769-776 ISSN：1007-2780
作者机构：
[章思汗 ZHANG Si-han; 戴志群 DAI Zhi-qun; 张开诚 ZHANG Kai-cheng; 刘可庆 LIU Ke-qing; 张智勇 ZHANG Zhi-yong] Department of Chemistry and Environmental Engineering, Wuhan Polytechnic University, Wuhan, 430023, China;[宣 丽 XUAN Li] Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, China
关键词：
含氟三苯二炔类液晶化合物;合成;高双折射率;宽温向列相
摘要：
目前,越来越多的液晶应用要求向列相液晶材料具有高双折射率性能。本文合成了5个高双折射率含氟三苯二炔类液晶化合物（Ⅳ）,经过IR,1 H NMR,13 C NMR谱图鉴定,这些化合物的分子结构完全正确;通过DSC和POM对其液晶相态测试的实验结果表明该类液晶化合物具有较低的熔点和相对较宽的向列相温度范围（达到100℃左右）;对其折光率测试结果表明这些液晶化合物的双折射率（Δn）值在0.47以上,改善液晶光学性能。
作者：
黄江涛 HUANG Jiang-tao;游红军 YOU Hong-jun;张智勇 ZHANG Zhi-yong;关金涛 GUAN Jin-tao;戴志群 DAI Zhi-qun;...
期刊：
液晶与显示,2013年28(5):668-673 ISSN：1007-2780
作者机构：
[黄江涛 HUANG Jiang-tao; 游红军 YOU Hong-jun; 张智勇 ZHANG Zhi-yong; 关金涛 GUAN Jin-tao; 戴志群 DAI Zhi-qun; 张开诚 ZHANG Kai-cheng] 武汉轻工大学化学与环境工程学院
关键词：
弯曲液晶;二苯甲酮;液晶相态;合成
摘要：
以4,4′-二羟基二苯甲酮为中心结构基元, 以酯基(—COO—)作为桥键, 烷基(m=5,6,7,8,9,10)为末端基团, 合成了一系列新型香蕉形液晶化合物(mPEPK), 通过IR、1H NMR、13C NMR和MS鉴定这些化合物的结构正确, 并经过差热扫描仪(DSC)和偏光显微镜(POM)测定其相变温度和相态织构。结果表明, 所合成目标化合物具有近晶相, 并且相转变温度较类似结构香蕉型液晶化合物有大幅度降低。 A novel series of bent-core molecules (mPEPK) was prepared with a central bent core based on 4,4-dihydroxybenzophenone (DHBP), ester group bridge(—COO—), and alkyl tails with different carbon numbers (m= 5, 6, 7, 8, 9, 10.). The structures of the titled compounds were confirmed by IR, 1H NMR, 13C NMR, MS spectra, and their transition temperatures and phase textures were investigated by using differential scanning calorimetric(DSC) and polarizing optical microscopy(POM). A part of the compounds exist smectic phase. Comparing with the similar compounds, the target compounds (m-PEPK) have declined to a great extent in liquid crystalline phase transition temperatures.
会议名称：
2011 SSITE International Conference on Future Material Research and Industry Application, FMRIA 2011
会议时间：
1 December 2011 through 2 December 2011
会议地点：
中国香港
会议论文集名称：
Proceedings of 2011 International Conference on Fuzzy Systems and Neural Computing(FSNC 2011 V3)
关键词：
gold;nanotriangle;Growth from solutions
摘要：
<jats:p>Monodispersed nanotriangles of gold have been prepared by a simple reaction between HAuCl<jats:sub>4</jats:sub>·4H<jats:sub>2</jats:sub>O, KOH and NH<jats:sub>2</jats:sub>OH·HCl in the presence of gelatin. Gelatin played a decisive role as an inhibitor of the direct reaction of NH<jats:sub>2</jats:sub>OH with AuCl<jats:sub>4</jats:sub>- and coagulation of the growing gold in producing the triangle. In the absence of gelatin, we can only obtain irregular large gold particles. The products were characterized by X-ray powder diffraction, transmission electron microscopy and UV-visible absorption spectroscopy.</jats:p>
摘要：
This paper dissertated the cultivation status and existing problems of innovation talents for applied chemistry specialty, and introduced the cultivation approach of innovation talent and the proposition of teaching reform for applied chemistry speciality. Meantime, combined with practical conditions in our university, the concrete measures and means for implementing teaching reform and training innovation talents of applied chemistry speciality were investigated. A series of measures such as reform of teaching plan, updating the experimental teaching contents, strengthening the practice teaching, and establishing the innovation base and practice base were adopted to encourage students for innovation, the purpose is to cultivate students' comprehensive quality and the innovative ability, and construct cultivation mode of innovation talents for applied chemistry specialty.
摘要：
A new method of removing rotenone from contaminated water using molecularly imprinted polymeric microspheres (MIPMs) is described. The MIPMs were prepared by the emulsifier-free polymerization method. The removal efficiency and selective recognition ability of the MIPMs were studied. The highest removal efficiency was observed at pH = 8. Moreover, the MIPMs can be re-used for at least 10 times without losing any removal efficiency. The MIPMs provided a selective, simple, reliable and practicable solution to remove rotenone from contaminated water.
