Self-assembly aggregation of highly stable copolynorbornenes with amphiphilic architecture via ring-opening metathesis polymerization
Self-assembly aggregation of highly stable copolynorbornenes with amphiphilic architecture via ring-opening metathesis polymerization
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DOI：
10.1021/ma048015v
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发表时间：
2005-04-19
期刊：
影响因子：
5.5
通讯作者：
Huang, CC
中科院分区：
文献类型：
--
作者：
Liaw, DJ;Chen, TP;Huang, CC
合成含离子悬垂基团的两亲性聚合物是近年来学术界的研究目标。许多研究人员关注荧光标记的两亲性聚合物，以将微观的光物理反应与宏观事件（如自结合、相分离、聚集或乳胶膜形成）联系起来。7-12特别令人感兴趣的是一类两亲性聚合物，它们在介质中发生自发自组织，主要是由于疏水结合形成各种类型的胶束状纳米结构。自从Zeon的Zeonex和Zeonor以及Ticona的Topas产品等环烯烃共聚物（COCs）商业化以来，人们对通过开环复分解聚合（ROMP）和加氢获得的高性能烃聚合物越来越感兴趣，这是生产完全无定形COCs的首选方法。这些聚合物的化学和电子特性使它们成为光刻剂的潜在用途。在这项研究中，通过开环复分解聚合（ROMP）、加氢、肼解和随后的季铵化，获得了具有自组装两亲性结构的新型稳定共聚物降冰片烯。不同组成的无规共聚物[2.2]。[1]庚-5-烯-2-基辛酸甲酯（NBMO）和5-（邻苯二胺甲基）-双环[2.2]。[1]合成了庚-2-烯（NBMPI），通过ROMP控制聚集体的相互作用和微观结构。聚集体的形成、结构和形态将被研究。高分子分子在水中的缔合作用将用荧光光谱法加以证实。聚集体的大小和形态将通过扫描电子显微镜（SEM）和透射电子显微镜（TEM）来表征。
Synthesis of amphiphilic polymer containing ionic pendant groups has been the goal of academic for the past several years. 1-6 Many researchers have focused on fluorescent-labeled amphiphilic polymers to correlate the microscopic, photophysical response with a macroscopic event such as self-association, phase separation, aggregation, or latex film formation. 7-12 Of particular interest is a class of amphiphilic polymers that undergo spontaneous self-organization in media mainly due to the hydrophobic associations to form various types of micelle-like nanostructures. 12, 13 Since the commercial introduction of cyclic olefin copolymers (COCs) such as Zeon’s Zeonex and Zeonor and Ticona’s Topas products, there has been increasing interest in high-performance hydrocarbon polymers obtained via ring-opening metathesis polymerization (ROMP) and hydrogenation, the method of choice for producing completely amorphous COCs. The chemical and electronic properties of these polymers make them potentially useful as photoresists. 14-19In this investigation, novel stable copolynorbornenes with self-assembly amphiphilic architecture containing hydrophilic ammonium salt and hydrophobic alkyl ester group were obtained by ring-opening metathesis polymerization (ROMP), hydrogenation, hydrazinolysis, and subsequent quaternization. Various random copolymers with varying compositions of bicyclo [2.2. 1] hept-5-en-2-ylmethyl octanoate (NBMO) and 5-(phthalimide methyl)-bicyclo [2.2. 1] hept-2-ene (NBMPI) were synthesized to control the interaction and microstructure of aggregates via ROMP. The formation, structure, and morphologies of the aggregates will be investigated. The association of polymer molecules in water will be confirmed by fluorescence spectroscopy. The size and morphologies of aggregates will be characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM).