SYNTHESIS OF PHOTOLUMINESCENT CORE-SHELL SILICA PARTICLES BY SACRIFICIAL POLYMER SHELL METHOD

被引：2

作者：

Ghahari, Mehdi ^{[1
]}

Fabbri, Paola ^{[2
]}

Ebadzadeh, Touradj ^{[3
]}

Aghababazadeh, Roya ^{[1
]}

Pilati, Francesco ^{[2
]}

Hesari, Freydoon Alikhani ^{[3
]}

机构：

[1] ICST, Inorgan Pigments & Glazes Dept, Tehran 1668814811, Iran

[2] Univ Modena & Reggio Emilia, Dipartimento Ingn Mat & Ambiente, I-41100 Modena, Italy

[3] Mat & Energy Res Ctr, Dept Ceram, Tehran 141554777, Iran

来源：

NANO | 2010年 / 5卷 / 04期

关键词：

Core-shell particles; photoluminescence; nanocoating; SOL-GEL PROCESS; NANO-SIZED SILICA; DISPERSION POLYMERIZATION; LUMINESCENCE PROPERTIES; INORGANIC PARTICLES; POLAR MEDIA; POLYSTYRENE; NANOPARTICLES; ENCAPSULATION; PHOSPHOR;

D O I：

10.1142/S179329201000213X

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A novel approach has been developed for the synthesis of SiO2@Y2O3:Eu3+ particles with core-shell structure. In this method the polymer shell is obtained by copolymerization of methacryl oxyethyl isocyanate onto silica particles which are chemically modified by 3-(trimethoxysilyl) propyl methacrylate. The grafted polymer acts as template to prepare the luminescent shell on silica particles. Then, the obtained silica-polymer core-shell particles are dispersed in a solution of Yttrium and Europium nitrates to allow a physical adsorption of the ions by the polymer shell. The sacrificial polymer shell will be removed by thermal treatment to obtain photoluminescent SiO2@Y2O3:Eu3+ core-shell particles. Results reveal that the intensity of photoluminescence of these core-shell particles is much higher than intensity of particles prepared without sacrificial polymer shell.

引用

页码：221 / 229

页数：9

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