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.

受控结构的聚合物和材料的合成目前引起了工业和学术研究的兴趣。然而，在缩聚中，由于缩聚以逐步增长反应方式进行，因此尚未合成具有限定分子量和窄分子量分布的聚合物。我们提出了形成满足所有上述要求的受控缩聚的方法之一是使缩聚从活性聚合等引发剂以链增长反应的方式进行。该项目的目标是开发具有受控分子量和低多分散性的缩聚物的链增长缩聚，并找到包含这些明确的缩聚物的新型自组装聚合物。结果总结如下。 (1)通过链增长缩聚实现了芳香族聚醚、芳香族聚酯、聚醚砜、聚噻吩的分子量和多分散性控制。发现明确的芳香族聚醚排列在硅晶片上形成超分子纳米结构。 (2)合成了结构明确的芳香族聚酰胺与聚乙二醇、聚苯乙烯、聚THF等通用聚合物的嵌段共聚物。还制备了 N-烷基和 N-H 芳香族聚酰胺的嵌段共聚物，并发现其自组装形成超分子微序束。 (3)合成了接枝有明确芳香族聚酰胺的新型聚苯乙烯。 (4)合成了低多分散性的含有芳香族聚酰胺的星形聚合物和星形嵌段共聚物。