Catechol Redox Induced Formation of Metal Core-Polymer Shell Nanoparticles

被引：143

作者：

Black, Kvar C. L. ^{[1
,4
]}

Liu, Zhongqiang ^{[1
,4
]}

Messersmith, Phillip B. ^{[1
,2
,3
,4
,5
,6
]}

机构：

[1] Northwestern Univ, Dept Biomed Engn, Evanston, IL 60208 USA

[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA

[3] Northwestern Univ, Chem & Biol Engn Dept, Evanston, IL 60208 USA

[4] Northwestern Univ, Chem Life Proc Inst, Evanston, IL 60208 USA

[5] Northwestern Univ, Inst Bionanotechnol Med, Evanston, IL 60208 USA

[6] Northwestern Univ, Robert H Lurie Comprehens Canc Ctr, Evanston, IL 60208 USA

来源：

CHEMISTRY OF MATERIALS | 2011年 / 23卷 / 05期

基金：

美国国家卫生研究院;

关键词：

catechol; quinone; gold; silver; nanoparticle; plasmon; cross-link; ENHANCED RAMAN-SPECTROSCOPY; SILVER NANOPARTICLES; GOLD NANOPARTICLES; ADHESIVE PROTEIN; MARINE MUSSEL; L-DOPA; HYDROQUINONE; ABSORPTION; GROWTH; SIZE;

D O I：

10.1021/cm1024487

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

A novel strategy was developed to synthesize polymer-coated metal nanoparticles (NPs) through reduction of metal cations with 3,4-dihydroxyphenylalanine (DOPA)-containing poly(ethylene glycol) (PEG) polymers. Catechol redox chemistry was used to both synthesize metal NPs and simultaneously form a cross-linked shell of PEG polymers on their surfaces. DOPA reduced gold and silver cations into neutral metal atoms, producing reactive quinones that covalently cross-linked the PEG molecules around the surface of the NP. Importantly, these PEG-functionalized metal NPs were stable in physiological ionic strengths and under centrifugation and hold broad appeal since they absorb and scatter light in aqueous solutions.

引用

页码：1130 / 1135

页数：6

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