In the (Very) Long Run We Are All Dead: Activation and Termination in SET-LRP/SARA-ATRP

被引：39
作者：
Harrisson, Simon [1 ]
Nicolas, Julien [2 ]
机构：
[1] Univ Toulouse, CNRS, IMRCP, UMR 5623, F-31062 Toulouse 9, France
[2] Univ Paris Sud, Inst Galien Paris Sud, Fac Pharm, CNRS,UMR 8612, F-92296 Chatenay Malabry, France
来源：
ACS MACRO LETTERS | 2014年 / 3卷 / 07期
关键词：
LIVING RADICAL POLYMERIZATION; LENGTH-DEPENDENT TERMINATION; SINGLE-ELECTRON-TRANSFER; ONE-POT SYNTHESIS; METHYL ACRYLATE; METALLIC COPPER; RATE COEFFICIENTS; MULTIBLOCK COPOLYMERS; SARA ATRP; LRP;
D O I：
10.1021/mz500305j
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The rate constants of activation and termination were determined for SET-LRP/SARA-ATRP polymerizations of methyl acrylate. Measurement of the rate of generation of CuBr2 throughout the reaction (using data from Levere et al., Macromolecules 2012, 45, 8267-8274) allowed evaluation of the chain length dependence of the two rate constants, which were found to be 1.25(9) X 10(-4)DP(n)(-0.51(3)) cm.s(-1) (activation) and 3.1(1) X 10(9)DP(n)(-0.49(2)) L.mol(-1).s(-1) (termination). Addition of the CuBr2 deactivator at the beginning of the reaction is found to result in a higher proportion of dead chains due to rapid termination of short chains.
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收藏
页码：643 / 647
页数：5
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