Synthesis of Conjugated−Ionic Block Copolymers by Controlled Radical Polymerization
Synthesis of Conjugated−Ionic Block Copolymers by Controlled Radical Polymerization
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DOI：
10.1021/ma020408b
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发表时间：
2003
期刊：
影响因子：
5.5
通讯作者：
S. Lu;Quli Fan;S. Chua;Wei Huang
中科院分区：
文献类型：
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作者：
S. Lu;Quli Fan;S. Chua;Wei Huang
A novel series of well-defined amphiphilic block copolymers containing conjugated poly(fluorene) (PF) block and coillike poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) were successfully synthesized through atom transfer radical polymerization (ATRP) initialized by a 2-bromoisobutyrate end-capped PF macroinitiator using CuCl/HMTETA (1,1,4,7,10,10-hexamethyltriethylenetetramine) as the catalyst. The first-order kinetics plot indicated a constant number of active species present in the polymerization. The molecular weight and molecular weight distribution were well controlled, implying well-defined block structure of the prepared block copolymers. The chemical structures of the copolymers were confirmed by 1H NMR studies. The copolymers could be successfully quanternized, and the final conjugated−ionic block copolymers were found to form PF aggregates in water as confirmed by 1H NMR, UV−vis, and photoluminescence (PL) spectra. PL spectra and quantum efficiency measurement also suggested the formation of...
