摘要
利用化学还原法制备了几种分布均匀的银纳米颗粒,并利用激光光谱法对吸附在银纳米颗粒表面的吖椗橙(AO)分子的荧光增强现象进行了研究探讨.探测了纳米银粒子的分布状态和尺寸对AO分子的荧光增强效应的影响.实验结果显示,当纳米银粒子的间距合适时,处于其附近的AO分子的荧光增强可以达到最佳效果.此外,随着颗粒尺寸的变大,荧光增强效应会更加明显.
Silver colloids were synthesized by chemical reduction method,and the fluorescence enhancement phenomena of silver colloids to acridine orange（AO） molecule were studied by using laser spectroscopy.The influence of the distribution of Ag nanoparticles（NPs） and the diameter of Ag NPs were investigated experimentally.The results show that proper controlling of the distances between neighbord Ag NPs is very important for obtaining an optimized fluorescence enhancement.Besides,the surface enhancement fluorescence became stronger with an increase of the diameter.
出处
《宁夏师范学院学报》
2012年第6期34-39,共6页
Journal of Ningxia Normal University
基金
宁夏自然科学基金资助项目(NZ11252
NZ12220)
宁夏师范学院创新团队子项目(zz201206)
关键词
表面荧光增强
银纳米颗粒
吖啶橙
化学还原法
Surface enhanced fluorescence
Ag nanoparticles
Acridine orange
Chemical reduction method
