一种新型侧链液晶聚合物的喇曼光谱研究

The Raman scattering on a novel liquid crystal side chain polymer, poly-2,5-bis (p-meth-oxybenzoyloxy) styrene, has been performed. We observed that the characteristic Raman sp-ctra of the vinyl group in the monomer changed much deeply in the polymer, especially for the Raman line correponding to the C=C of the vinyl group which disappeared completly in the polymer. Contrast with that, the Raman spetra of the rest group did not present any substantial difference between the monomer and the polymer. These experimental facts show-ed that the vinyl group of the monomer was tranfered to the polymeric backbone while the chemical structure of the mesogenic unit in the monomer remained after the polymerization,and also conformed that it was successful in the synthesis of a liquid crystal side chain plymer without a flexible spacer between the mesomorphic unit and the molecular main chain.     

Synthesis and Crystal Structure of a Co（II） Coordination Polymer Derived from a Flexible Bipyridyl Derivative Ligand

1 INTRODUCTION The infinite networks constructed from transition metal complexes have attracted considerable current interest in recent years. The motivation behind this activity has been stimulated by their potential appli- cations in selective inclusion of ions, molecular re- cognition, host-guest chemistry, ion exchange, cata- lysis, electrical conductivity, magnetism, optics and so on[1～4]. It is well known that the diversity in structures and topologies of supramolecules is attri- b…     

一种新颖一维铅碘聚合物[(Pb_2I_5)(L-H~ )·2DMF]_n(L=Piperazine)的自组装合成和晶体结构(英文)

0IntroductionIncreasinginterestisfocusedonthestudyofmagnetic,electronicandoptoelectronicpropertiesoflow鄄dimensionalorganic鄄inorganichybridcompoun鄄ds[1~3].Studiesshowthatcomplexconsistingoforganicandinorganiccomponentshavegreatpotentialforthecreationoff…     

电化学超级电容器电极材料的研究进展

回顾了电化学超级电容器电极材料的研究进展，并对不同电极材料的储能原理和性能特点进行了简要的阐述。参考文献29篇。     

全钒液流电池用导电高分子材料集流体的研究

以炭黑、石墨、碳纤维等炭系与基体树脂复合改性得到体积电阻率小于0.1的导电高分子材料.研究了不同复合体系及不同配方的复合材料的导电性能,其中尤以SIS/PP体系中碳纤维占填料量32.5%的材料导电率高、力学性能和加工性能良好,并与石墨毡有较好的粘接性.选用该体系作为钒电池集流板,考察了电池性能,研究结果表明,导电高分子材料可以作为钒电池集流体材料,并在钒电池中具有良好的应用前景.     

硼酸酯偶联剂的合成与表征

通过分子结构设计，合成了一种氮一硼内配位结构的硼酸酯偶联剂，解决了硼酸酯水解稳定性差的问题，同时分子结构中含有氨基、丁氧基等活性基团。用傅立叶变换红外光谱对硼酸酯进行了结构表征，讨论了原料配比、合成工艺等对硼酸酯收率及反应速率的影响，并通过实验确定了最佳配方及工艺。对硼酸酯的物理性能、溶解性、水解稳定性及对硼酸铝晶须的表面处理效果进行了表征。结果表明：合成的硼酸酯偶联剂由于具有氮-硼内配位作用，表现出优良的水解稳定性，并且硼酸酯偶联剂对硼酸铝晶须具有良好的表面改性效果。     

掺杂态聚苯胺链结构的研究

本文利用FTIR、固体高分辨~(13)C-NMR、共振拉曼光谱及紫外-可见光谱等手段,研究了聚苯胺掺杂前后的结构变化,指出质子酸的掺杂使聚苯胺中的醌亚胺单元和苯二胺单元发生部分的氧化还原反应,生成了具有一定电荷分布的共轭体系。     

导电性聚西佛碱的研究：Ⅰ含硫聚西佛碱的合成,性能及表征

采用对氯苯甲醛和联苯二胺为原料,合成了4,4′-二氯代苄叉联苯胺,发现该化合物具有热致液晶性。利用所合成的二氯代化合物与硫化钠在醋酸锂催化下缩取得得到了含硫聚西佛碱探讨了高分子量含硫聚西佛碱的合成方法。测出该含硫聚西佛碱具有3.4×10~(-11)S/cm本征导电率。使用红外光谱、元素分析等方法表征了所合成的聚合物。     

聚（3—丁基噻吩）电导的热稳定性

研究了导电聚合物聚（３－丁基噻吩）（ＰＢＴ）在大气环境下的导电热稳定性。在室温至２２０℃范围内，测试电导率随时间及温度的变化。ＴＧＡ分析以及化学分析的结果表明：掺杂态的ＰＢＴ大约在１４０℃附近有一转化温度，低于或高于这一转化温度，电导率下降的决定因素各不相同。高于转化温度时，电导率下降的主要原因是反离子和高分子主链的解离，进而发生化学反应，影响了高分子主链的结构。ＸＰＳ测试结果表明：经热处理后的Ｐ