通过三步反应成功将铕配合物(EuTP)包覆在纳米棱壳结构Ag@SiO2复合颗粒的表面.采用化学还原法制备了粒径25～30 nm且分散性良好的纳米银溶胶;然后采用改进的St(o)ber法制备了壳层厚度在20nm左右的Ag@SiO2复合颗粒;以氧化铕、α-噻吩甲酰三氟丙酮、邻菲罗啉为原料制备EuTP,并成功包覆在核壳结构的表面.分别采用TEM、FTIR、XRD等对样品的结构进行了表征,并通过对比相同浓度的三价铕的配合物EuTP与复合粒子Ag@SiO2@EuTP的荧光发射光谱发现,SiO2壳层厚度在20 nm左右时Eu配合物的荧光强度明显增强,而且随着棱壳结构表面配合物浓度的增大,包覆层的厚度增大,荧光强度也呈现增强趋势,对于稀土的研究具有重要的意义.
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