In-situ formation of Fe3O4 nanoparticles within the thermo sensitive hairy hybrid particles

被引：16

作者：

Bi, Shuxian ^{[1
]}

Wei, Xiangyu ^{[2
]}

Li, Na ^{[2
]}

Lei, Zhongli ^{[2
]}

机构：

[1] Ningxia Univ, Sch Chem & Chem Engn, Yinchuan 750021, Peoples R China

[2] Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Minist Educ, Sch Chem & Mat Sci, Xian 710062, Peoples R China

来源：

MATERIALS LETTERS | 2008年 / 62卷 / 17-18期

关键词：

magnetic materials; nanocomposites; atom-transfer radical polymerization; poly(N-isopropylacrylamide);

D O I：

10.1016/j.matlet.2008.01.084

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Herein we report on the production of composite magnetic yolk-shell particles, where the shell consists of magnetite (Fe3O4) nanoparticle/ polymer bilayer and the colloidal yolk is SiO2 nanoparticles. A simple two-step method was developed for the covalent immobilization of atom-transfer radical polymerization (ATRP) initiators on the SiO2 surface. Well-defined functional polymer-SiO2 hybrids consisted of covalently tethered brushes of N-isopropylacrylamide (NIPAAm) polymer. Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) measurements confirmed the nanostructures and the components of the resulting nanoobjects. These stimuli-responsive hybrid gels will have potential applications in biomedical areas, such as tissue engineering and drug delivery. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：2963 / 2966

页数：4

共 22 条

[1] Microfluidic tectonics: A comprehensive construction platform for microfluidic systems [J].

Beebe, DJ ;

Moore, JS ;

Yu, Q ;

Liu, RH ;

Kraft, ML ;

Jo, BH ;

Devadoss, C .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2000, 97 (25) :13488-13493

[2] Organometallic chemistry on silicon and germanium surfaces [J].

Buriak, JM .

CHEMICAL REVIEWS, 2002, 102 (05) :1271-1308

[3] Flexible high-loading particle-reinforced polyurethane magnetic nanocomposite fabrication through [J].

Guo, Zhanhu ;

Park, Sung ;

Wei, Suying ;

Pereira, Tony ;

Moldovan, Monica ;

Karki, Amar B. ;

Young, David P. ;

ThomasHahn, H. .

NANOTECHNOLOGY, 2007, 18 (33)

[4] Strengthening and thermal stabilization of polyurethane nanocomposites with silicon carbide nanoparticles by a surface-initiated-polymerization approach [J].

Guo, Zhanhu ;

Kim, Ta Y. ;

Lei, Kenny ;

Pereira, Tony ;

Sugar, Jonathan G. ;

Hahn, H. Thomas .

COMPOSITES SCIENCE AND TECHNOLOGY, 2008, 68 (01) :164-170

[5] Lactoferrin and ceruloplasmin derivatized superparamagnetic iron oxide nanoparticles for targeting cell surface receptors [J].

Gupta, AK ;

Curtis, ASG .

BIOMATERIALS, 2004, 25 (15) :3029-3040

[6]

HALPERIN A, 1992, ADV POLYM SCI, V100, P31

[7] Manipulation of surface properties by patterning of covalently bound polymer brushes [J].

Husemann, M ;

Morrison, M ;

Benoit, D ;

Frommer, KJ ;

Mate, CM ;

Hinsberg, WD ;

Hedrick, JL ;

Hawker, CJ .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (08) :1844-1845

[8] Stimulus-responsive poly(N-isopropylacrylamide) brushes and nanopatterns prepared by surface-initiated polymerization [J].

Kaholek, M ;

Lee, WK ;

Ahn, SJ ;

Ma, HW ;

Caster, KC ;

LaMattina, B ;

Zauscher, S .

CHEMISTRY OF MATERIALS, 2004, 16 (19) :3688-3696

[9] Amphiphilic polymer brushes grown from the silicon surface by atom transfer radical polymerization [J].

Kong, XX ;

Kawai, T ;

Abe, J ;

Iyoda, T .

MACROMOLECULES, 2001, 34 (06) :1837-1844

[10] Preparation of polymer nanocomposites of core-shell structure via surface-initiated atom transfer radical polymerizations [J].

Lei, Zhongli ;

Bi, Shuxian .

MATERIALS LETTERS, 2007, 61 (16) :3531-3534

← 1 2 3 →