Synthesis and Self-Assembly of Well-Defined Condensation Polymers from Chain-Growth Polycondensation

链增长缩聚的明确缩聚物的合成和自组装

基本信息

批准号：
12450377
负责人：
YOKOZAWA Tsutomu
金额：
$ 9.6万
依托单位：
Kanagawa University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

Synthesis of polymers and materials of controlled architectures is of current interest in both industrial and academic research. In polycondensation, however, polymers of having a defined molecular weight and a narrow molecular weight distribution have not been synthesized, because polycondensation proceeds in a step-growth reaction manner. We have proposed that one of approaches to controlled polycondensation with the formation of that fulfill all of the above-mentioned requirements is to make polycondensation proceed in a chain-growth reaction manner from an initiator like living polymerizations. The goal of this project is to develop chain-growth polycondensation for condensation polymers having controlled molecular weights and low polydispersities and to find novel self-assembly of polymers containing these well-defined condensation polymers.The summary of results is as follows. (1) Control over molecular weight and polydispersity have been achieved on aromatic polyethers, aromatic polyesters, poly (ether sulfone)s, polythiophenes by chain-growth polycondensation. Well-defined aromatic polyethers are find to be arranged to form supramolecular nanostructures on silicon wafer. (2) Block copolymers of well-defined aromatic polyamides and general polymers such as poly (ethylene glycol), polystyrene, and polyTHF have been synthesized. The block copolymers of N-alkyl and N-H aromatic polyamides have been also prepared and found to self-assemble to form supramolecular micro-order bundles. (3) Novel polystyrenes that well-defined aromatic polyamides are grafted on have been synthesized. (4) Star polymers and star block copolymers containing aromatic polyamides with low polydispersities have been synthesized.

聚合物的合成和受控体系结构的材料在工业和学术研究中均具有目前的关注。然而，在多浓度中，尚未合成具有定义的分子量和狭窄的分子量分布的聚合物，因为多浓度以阶级增长反应方式进行。我们提出，以上述要求的形成来控制多浓度的一种方法是使多浓度以链生长反应的方式从诸如生存聚合等起点的链增长反应方式进行。该项目的目的是开发具有控制分子量和低多分散性的凝结聚合物的链生长多敏，并找到包含这些定义明确的凝聚聚合物的新型聚合物的新型自组装。结果的摘要如下。（1）通过链生长的多凝结，对芳族聚乙烯，芳香族聚酯，聚（乙醚磺基磺基）S，聚息苯基S，多胆苯基的控制已经实现了对分子量和多分散性的控制。发现明确定义的芳族聚乙烯可以安排在硅晶圆上形成超分子纳米结构。（2）已合成了定义明确的芳族聚酰胺和一般聚合物（例如聚（乙二醇），聚苯乙烯和Polythf）的共聚物。还制备了N-烷基和N-H芳族聚酰胺的块共聚物，并发现自组装形成超分子微分叉束。（3）已合成了定义明确的芳族聚酰胺的新型多层生物。（4）已合成了含有低多分散性的芳香族聚酰胺的星形聚合物和恒星块共聚物。