权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

CATALYTIC SYNTHESES OF AROMATIC CONDUCTING POLYMERS

芳香族导电聚合物的催化合成

基本信息

批准号：
07555593
负责人：
TOSHIMA Naoki
金额：
$ 0.77万
依托单位：
SCIENCE UNIVERSITY OF TOKYO IN YAMAGUCHI (1996)The University of Tokyo (1995)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1995
资助国家：
日本
起止时间：
1995 至 1996
项目状态：
已结题

项目摘要

1) Polypyrrole is a stable and heat-resisting polymer. We have already developed a novel method to prepare polypyrrole from pyrrole by using molecular oxygen as an oxidant and copper (I) chloride-aluminum chloride complex as a catalyst, respectively. However, sine this catalyst is sensitive to water, the catalyst can be deactivate by the water bye-produced by the reduction of molecular oxygen. Thus, in this project, we have developed a new catalytic system which does not contain aluminum chloride. Among various metal salts, we found that iron (III) salts like iron (III) chloride are effective for this purpose. In addition, the solvent used for this reaction was found effective in the reaction yield and the conductivity of the polymer produced. In fact, propylene carbonate was found the best among the solvents examined. The catalytic oxidative polymerization was carried out in the presence of anions, which work as the dopant, to improve the conductivity of the produced polymer.2) The copper (II) chloride-oxygen system was found effective in the catalytic oxidative polymerization of aniline and its derivatives. However, the polyaniline thus prepared has a disadvantage, i.e., a bad processability. In order to cover this disadvantage, a novel method was investigated to prepare polyaniline from precursor polymers. Poly (o-aminobenzoic acid) is soluble in some organic solvents and alkaline solutions, being one of the candidates for the precursor polymer. However, the yield is very low when it is prepared by a conventional method. We have develop a new method to prepare poly (o-aminobenzoic acid) at high yield by oxidative polymerization in an alkaline solution. Heat treatment of poly (o-aminobenzoic acid) gives polyaniline with loss of carbon dioxide. We have also developed a new method to prepare sulfonated polyaniline from aminobezenesulfonic acid as a raw materials.

1)聚吡咯是一种稳定的耐热聚合物。我们已经开发了一种新的方法，分别使用分子氧作为氧化剂和氯化铜（I）-氯化铝络合物作为催化剂，由吡咯制备聚吡咯。但由于该催化剂对水敏感，分子氧还原产生的水会使催化剂失活。因此，在本项目中，我们开发了一种不含氯化铝的新催化体系。在各种金属盐中，我们发现铁（III）盐如氯化铁（III）对于该目的是有效的。此外，发现用于该反应的溶剂在反应产率和所生产的聚合物的导电性方面是有效的。事实上，发现碳酸亚丙酯在所检查的溶剂中是最好的。研究了阴离子对苯胺及其衍生物催化氧化聚合的影响。结果表明：（1）CuCl_2-O_2体系对苯胺及其衍生物的催化氧化聚合具有良好的催化活性。然而，如此制备的聚苯胺具有缺点，即，加工性能差。为了克服这一缺点，研究了一种由前驱体聚合物制备聚苯胺的新方法。聚邻氨基苯甲酸可溶于某些有机溶剂和碱性溶液，是一种理想的前驱体聚合物。然而，当通过常规方法制备时，产率非常低。本文提出了一种在碱性溶液中氧化聚合制备聚邻氨基苯甲酸的新方法。聚邻氨基苯甲酸的热处理得到聚苯胺，二氧化碳损失。我们还开发了一种以氨基苯磺酸为原料制备磺化聚苯胺的新方法。