SET-LRP of NIPAM in water via in situ reduction of Cu(II) to Cu(0) with NaBH4

被引：46

作者：

Gavrilov, Mikhail ^{[1
]}

Zerk, Timothy J. ^{[2
]}

Bernhardt, Paul V. ^{[2
]}

Percec, Virgil ^{[3
]}

Monteiro, Michael J. ^{[1
]}

机构：

[1] Univ Queensland, Australian Inst Bioengn & Nanotechnol, Brisbane, Qld 4072, Australia

[2] Univ Queensland, Sch Chem & Mol Biosci, Brisbane, Qld 4072, Australia

[3] Univ Penn, Dept Chem, Roy & Diana Vagelos Labs, Philadelphia, PA 19010 USA

来源：

POLYMER CHEMISTRY | 2016年 / 7卷 / 04期

基金：

美国国家科学基金会; 澳大利亚研究理事会;

关键词：

LIVING RADICAL POLYMERIZATION; AMPHIPHILIC GRAFT-COPOLYMERS; SINGLE-ELECTRON-TRANSFER; BROMO CLICK CHEMISTRY; COORDINATION POLYMERIZATION; VINYL-CHLORIDE; COPPER; N; N-DIMETHYLACRYLAMIDE; DISPROPORTIONATION; NANOPARTICLES;

D O I：

10.1039/c5py01855b

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 direct and quantitative reduction of the air-stable Cu(II) Br-2/Me6TREN to Cu(0) by NaBH4 represents a new method for the aqueous single electron transfer-living radical polymerization (SET-LRP) of water soluble polymers. By changing the stoichiometry of NaBH4 to Cu(II)Br-2, any desired ratio of Cu(II)Br-2 to Cu(0) could be obtained with no evidence of Cu(I) species. This quantitative reduction to Cu(0) in combination with rapid disproportionation of Cu(I) Br/Me6TREN in water resulted in activation by Cu(0) initially and during the polymerization. Polymerizations of NIPAM produced polymer within minutes and with controlled and narrow molecular weight distributions in agreement with ideal 'living' radical behavior. The direct in situ thio-bromo 'click' reaction produce polymers with stable chain-end functionality, eliminating the concern of hydrolysis of the halide end-group (i.e. Br). It was found that the end-group functionality was greater than 95%, and for the very rapid polymerizations close to 100%.

引用

页码：933 / 939

页数：7

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