KCl对含有纳米银的[Ru(bpy)3]2+荧光性能影响

通过吸收光谱、荧光光谱等手段研究了KCl对含有纳米银的金属钌联吡啶配合物(Ru(bpy)3]2 )的荧光性能的影响.结果表明,KCl与纳米银粒子间存在较强的相互作用,这种强的相互作用破坏了Ru(bpy)3]2 与纳米银粒子间的链状网络结构,形成大颗粒和团聚体.同时,在吸收光谱的长波段处观察到明显的新的吸收带,随着KCl量的增加,新吸收带峰值逐渐红移并展宽.随着KCl量的增加,Ru(bpy)3]2 荧光强度先猝灭而后逐渐增强,直至达到一个定值.文章从分子间的相互作用、能量传递等方面探讨了KCl对含有纳米银的Ru(bpy)3]2 荧光性能影响机理.

Effects of KCl on Fluorescence of [Ru(bpy)3]2+ Solution Containing Silver Nanoparticles

In the present paper,the authors studied the effects of KCl on the fluorescence of Ru(bpy)3]2 solution containing silver nanoparticles by UV-Vis absorption spectra and fluorescence spectra.The results indicated that the stronger action between KCl and silver nanoparticles led to the vanishing of chain-like net structure formed between Ru(bpy)3]2 and silver nanoparticles and the formation of large particles and aggregates in the solution.Meanwhile,a new band at longer wavelength region appeared and the peak at long wavelength was red-shifted and broadened with the increase of KCl.With the increase in KCl content,the fluorescence decreases first and then increases till a constant value.The authors discussed the mechanism of the effects KCl on the fluorescence of Ru(bpy)3]2 solution containing silver nanoparticles in terms of interaction and energy transfer.