A novel method for the preparation of Ru(bpy)(2+)(3) -doped silica nanoparticles

作者：Wang Yuhong; Fan Wei; Nugen Sam R^*

来源：Materials Letters, 2013, 92: 17-20.

DOI：10.1016/j.matlet.2012.10.021

• Ru(bpy)(2+)(3) -doped silica nanoparticle
• Zeta potential
• Fluorescence
• Nanoparticle

A novel method for the preparation of spherical Ru(bpy)(2+)(3) -doped silica nanoparticles with adjustable diameters and narrow particle size distribution with high yield was developed. Unlike the most commonly used Stober method which uses a reverse microemulsion system (oil-based, NH4OH as a catalyst, pH 11-12), the proposed method synthesizes the nanoparticles in a water-based system (pH 9-10) using L-lysine as a catalyst in the presence of the dye. Both the size of the spherical dye-doped nanoparticles and the Ru(bpy)(2+)(3) content which is incorporated in silica nanoparticles are precisely controlled by the multiple-step addition of tetraethyl orthosilicate and Ru(bpy)(2+)(3) solution, respectively.

• 出版日期2013-2-1