通过静电相互作用制备CdTe/SiO_2纳米复合物  

Preparation of CdTe/SiO_2 Nanocomplex via Electrostatic Interaction

作　　者：赵奎[1] 李军[1] 王林[1] 潘凯[1] 刘艳梅[1] 白玉白[1] 李铁津 

机构地区：[1]吉林大学化学学院,长春130023

出　　处：《高等学校化学学报》2005年第6期1106-1109,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:60271020);国家"九七三"计划(批准号:G1999064504);国家"八六三"计划(批准号:2002AA302203)资助.

摘　　要：以四乙氧基硅烷(TEOS)为原料,在乙醇相中制备了尺寸为80nmSiO2纳米粒子,用3-氨基丙基三乙氧基硅烷对SiO2纳米粒子进行了氨基化.以巯基乙酸为配体,在水相中合成了CdTe纳米晶.通过静电相互作用,CdTe纳米晶被吸附到氨基化的二氧化硅球的表面上.研究了两种粒子复合后引起的CdTe纳米晶发光光谱的变化.Monodispersed 80 nm silica spheres were prepared in alcohol solvent by using tetraethyl-orthosilicate as the precursor, and functionalized with 3-aminopropyltriethoxysilane. The CdTe nanocrystals were synthesized in aqueous solution by using thioglycolic acid as the stabilizing agent. Additionally, CdTe nanocrystals were adsorbed on the surface of silica sphere in aqueous solution through electrostatic function. It was found that the CdTe nanocrystals photoluminescent spectra had an obviously shift to long wavelength.

关 键 词：CdTe纳米晶 二氧化硅微球 静电作用 CdTe/SiO2复合物 

分 类 号：O664[理学—分析化学]