CdS-nanoparticle/polymer composite shells grown on silica nanospheres by atom transfer radical polymerization

被引：76

作者：

Cui, T ^{[1
]}

Zhang, JH ^{[1
]}

Wang, JY ^{[1
]}

Cui, F ^{[1
]}

Chen, W ^{[1
]}

Xu, FB ^{[1
]}

Wang, Z ^{[1
]}

Zhang, K ^{[1
]}

Yang, B ^{[1
]}

机构：

[1] Jilin Univ, Coll Chem, Key Lab Supramol Struct & Mat, Changchun 130012, Peoples R China

来源：

ADVANCED FUNCTIONAL MATERIALS | 2005年 / 15卷 / 03期

关键词：

D O I：

10.1002/adfm.200400327

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper we describe the combined use of surface-initiated atom transfer radical polymerization (ATRP) and a gas/solid reaction in the direct preparation of CdS-nanoparticle/block-copolymer composite shells on silica nanospheres. The block copolymer, consisting of poly(cadmium dimethacrylate) (PCDMA) and poly(methyl methacrylate) (PMMA), is obtained by repeatedly performing the surface-initiated ATRP procedures in N,N-dimethylformamide (DMF) solution at room temperature, using cadmium dimethacrylate (CDMA) and methyl methacrylate (MMA) as the monomers. CdS nanoparticles with an average size of about 3 nm are generated in situ by exposing the silica nanospheres coated with block-copolymer shells to H2S gas. These synthetic core-shell nanospheres were characterized using transmission electron microscopy (TEM), dynamic light scattering (DLS), thermogravimetric analysis (TGA), diffuse reflectance UV-vis spectroscopy, X-ray photoelectron spectroscopy (XPS), and powder X-ray diffraction (XRD). These composite nanospheres exhibit strong red photoluminescence in the solid state at room temperature.

引用

页码：481 / 486

页数：6

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