Synthesis of poly(4-vinylpyridine) and block copoly (4-vinylpyridine–b-styrene) by atom transfer radical polymerization using 5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazamacrocyclotetradecane as

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• 作者：Yang ; Runmiao ; Wang ; Yanmei ; Wang ; Xiaogang ; He ; Weidong ; Pan ; Caiyuan
• 关键词：Atom transfer radical polymerization ; 4-Vinylpyridine ; 5 ; 5 ; 7 ; 12 ; 12 ; 14-Hexamethyl-1 ; 4 ; 8 ; 11-tetraazamacrocyclotetradecane ; Amphiphilic block copolymer
• 刊名：European Polymer Journal
• 出版年：2003
• 期刊代码：35_00143057
• 类别：ms
• 出版时间：October, 2003
• 卷：39
• 期：10
• 页码：2029-2033
• 文件大小：453 K

摘要

Poly(4-vinylpyridine) (P4VP) and block copolymer, poly(4-vinylpyridine–b-styrene) (P4VP-b-PSt) were prepared by atom transfer radical polymerization (ATRP) using 1-phenylethyl chloride as initiator, CuCl and 5,5,7,12,12,14–hexamethyl-1,4,8,11-tetraazamacrocyclotetradecane (Me₆[14]aneN₄) as catalyst and ligand. The polymerization of 4VP was carried out in 2-propanol at 40 °C. GPC and NMR studies show that the plot of ln([4VP]₀/[4VP]) against the reaction time is linear, and the molecular weight of the resulting P4VP increased linearly with the conversion. Within 3 h, the conversion can reach almost 90%. P4VP-b-PSt amphiphilic block copolymer with low polydispersity index (M_w/M_n1.2) is also obtained by ATRP of St in DMF at 110 °C using P4VP–Cl as macroinitiator, CuCl/ Me₆[14]aneN₄ as catalyst.