Core-shell-corona Au-micelle composites with a tunable smart hybrid shell

被引：53

作者：

Chen, Xi ^{[1
]}

An, Yingli ^{[1
]}

Zhao, Dongyun ^{[1
]}

He, Zhenping ^{[1
]}

Zhang, Yan ^{[1
]}

Cheng, Jing ^{[1
]}

Shi, Linqi ^{[1
]}

机构：

[1] Nankai Univ, Key Lab Funct Polymer Mat, Minist Educ, Inst Polymer Chem, Tianjin 300071, Peoples R China

来源：

LANGMUIR | 2008年 / 24卷 / 15期

关键词：

D O I：

10.1021/la800244g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Micelles having a core of polystyrene and a mixed shell of poly(ethylene glycol) and poly(4-vinylpyridine) were formed through self-assembly of a triblock copolymer poly(ethylene glycol)-block-polystyrene-block-poly(4-vinylpyridine) in acidic water (pH 2). Reducing the HAuCl4-treated micelle solution leads to the formation of the Au-micelle composites with a core of polystyrene, a hybrid shell of poly(4-vinylpyridine)/Au/poly(ethylene glycol), and a corona of poly(ethylene glycol). The gold nanoparticles with controlled sizes were anchored to poly(4-vinylpyridine) to form the physically cross-linked hybrid shell. In aqueous solution, the hybrid shell is swollen and the swollen degree is sensitive to the pH condition. Under basic conditions, the channel in the hybrid shells of the composite is produced, which renders the composites a good catalytic activity. In addition, the composites also show good stability, unchanged hydrodynamic diameter, and surface plasmon absorption under different pH conditions.

引用

页码：8198 / 8204

页数：7

共 46 条

[21] Catalytic activity of supported au nanoparticles deposited from block copolymer micelles [J].

Jaramillo, TF ;

Baeck, SH ;

Roldan Cuenya, B ;

McFarland, EW .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (24) :7148-7149

[22] Core/shell gold nanoparticles by self-assembly and crosslinking of micellar, block-copolymer shells [J].

Kang, YJ ;

Taton, TA .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (03) :409-412

[23] Block copolymer micelles for drug delivery: design, characterization and biological significance [J].

Kataoka, K ;

Harada, A ;

Nagasaki, Y .

ADVANCED DRUG DELIVERY REVIEWS, 2001, 47 (01) :113-131

[24] Tuning of the morphology of core-shell-corona micelles in water.: I.: Transition from sphere to cylinder [J].

Lei, LC ;

Gohy, JF ;

Willet, N ;

Zhang, JX ;

Varshney, S ;

Jérôme, R .

MACROMOLECULES, 2004, 37 (03) :1089-1094

[25] Formation of complex micelles with double-responsive channels from self-assembly of two diblock copolymers [J].

Li, Guiying ;

Shi, Linqi ;

Ma, Rujiang ;

An, Yingli ;

Huang, Nan .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (30) :4959-4962

[26] Reverse micelles of star-block copolymer as nanoreactors for preparation of gold nanoparticles [J].

Li, Junbo ;

Shi, Linqi ;

An, Yingli ;

Li, Yan ;

Chen, Xi ;

Dong, Huijun .

POLYMER, 2006, 47 (26) :8480-8487

[27] Synthesis of pH-responsive shell cross-linked micelles and their use as nanoreactors for the preparation of gold nanoparticles [J].

Liu, SY ;

Weaver, JVM ;

Save, M ;

Armes, SP .

LANGMUIR, 2002, 18 (22) :8350-8357

[28] Catalytic properties of carboxylic acid functionalized-polymer microsphere-stabilized gold metallic colloids [J].

Liu, Wei ;

Yang, Xinlin ;

Huang, Wenqiang .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2006, 304 (01) :160-165

[29] Aggregation-based fabrication and assembly of roughened composite metallic nanoshells: Application in surface-enhanced Raman scattering [J].

Lu, LH ;

Zhang, HJ ;

Sun, GY ;

Xi, SQ ;

Wang, HS ;

Li, XL ;

Wang, X ;

Zhao, B .

LANGMUIR, 2003, 19 (22) :9490-9493

[30] Thermal activation of molecularly-wired gold nanoparticles on a substrate as catalyst [J].

Luo, J ;

Jones, VW ;

Maye, MM ;

Han, L ;

Kariuki, NN ;

Zhong, CJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (47) :13988-13989

← 1 2 3 4 5 →