Synthesis and characterization of tris(2,2′‐bipyridine)ruthenium‐cored star‐shaped polymers via RAFT polymerization
Synthesis and characterization of tris(2,2′‐bipyridine)ruthenium‐cored star‐shaped polymers via RAFT polymerization
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RAFT聚合三(2,2′-联吡啶)钌核星形聚合物的合成与表征
DOI：
10.1002/pola.22219
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
I. Harruna
中科院分区：
文献类型：
--
作者：
Guangchang Zhou;Jibao He;I. Harruna
合成了一种新型的联吡啶官能化二硫酯，并将其作为RAFT试剂用于苯乙烯和N-异丙基丙烯酰胺的RAFT聚合。动力学分析表明，它是一个有效的链转移剂的RAFT聚合的两个单体，生产聚苯乙烯和聚（N-异丙基丙烯酰胺）聚合物具有预定的分子量和低的多分散性，除了联吡啶的末端官能度。并进一步将其作为大分子配体用于星形金属聚合物的制备。将疏水性聚苯乙烯大配体与亲水性聚（N-异丙基丙烯酰胺）结合，与钌离子形成两亲性钌核星形金属聚合物。这些合成的金属聚合物的结构进一步阐明了紫外可见光谱，荧光，尺寸排阻色谱（SEC），差示扫描量热法（DSC）以及NMR技术。© 2007 Wiley Periodicals，Inc.聚合物科学杂志A部分：聚合物化学45：4225-4239，2007
A new bipyridine-functionalized dithioester was synthesized and further used as a RAFT agent in RAFT polymerization of styrene and N-isopropylacrylamide. Kinetics analysis indicates that it is an efficient chain transfer agent for RAFT polymerization of the two monomers which produce polystyrene and poly(N-isopropylacrylamide) polymers with predetermined molecular weights and low polydispersities in addition to the end functionality of bipyridine. The bipyridine end-functionalized polymers were further used as macroligands for the preparation of star-shaped metallopolymers. Hydrophobic polystyrene macroligand combined with hydrophiphilic poly(N-isopropylacrylamide) was complexed with ruthenium ions to produce amphiphilic ruthenium-cored star-shaped metallopolymers. The structures of these synthesized metallopolymers were further elucidated by UV–vis, fluorescence, size exclusion chromatography (SEC), and differential scanning calorimetry (DSC) as well as NMR techniques. © 2007 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 45: 4225–4239, 2007