银纳米棱镜的光学性质及其对铕配合物荧光的影响。

Optical properties of silver nanoprisms and their influences on fluorescence of europium complex.

作者信息

Wang Qingru, Song Feng, Lin Shangxin, Liu Jiadong, Zhao Hongyan, Zhang Chao, Ming Chengguo, Pun Edwin Y B

机构信息

Photonics Center, College of Physics Science, Nankai University, Tianjin 300071, China.

出版信息

Opt Express. 2011 Apr 11;19(8):6999-7006. doi: 10.1364/OE.19.006999.

DOI:10.1364/OE.19.006999

PMID:21503014

Abstract

The optical properties of truncated triangular silver nanoprisms and their influences on the fluorescence of europium complex Eu(TTFA)(3) were investigated in theory and experiment separately. In theory, we found that the fluorescence of Eu ions would be greatly enhanced by these nanoprisms, the enhancement factor of the fluorescence depended on the concentrations of nanoprisms. They were verified in the experiment. The influence of silver nanoprisms on the radiative and nonradiative decay rates of Eu ions were also deduced, and found that the silver nanoprisms greatly reduced the energy loss caused by the nonradiative decay.

摘要

分别从理论和实验两个方面研究了截断三角形银纳米棱镜的光学性质及其对铕配合物Eu(TTFA)₃荧光的影响。在理论上，我们发现这些纳米棱镜会极大地增强铕离子的荧光，荧光增强因子取决于纳米棱镜的浓度。这些在实验中得到了验证。还推导了银纳米棱镜对铕离子辐射和非辐射衰减率的影响，发现银纳米棱镜大大降低了由非辐射衰减引起的能量损失。