Author:
Wang Qing-Ru ,Li Shu-Hong ,Shi Qiang ,Wang Wen-Jun ,
Abstract
Spherical silver (Ag) nanoparticles, triangular Ag nanoprisms, and triangular gold (Au) nanoparticles were separately deposited on the Eu(TTFA)3-doped Su8 films. Compared with the fluorescence of films without nanoparticles, the fluorescence of the doped films was greatly enhanced by the two kinds of the Ag nanoparticles, the enhancement is greater for the spherical Ag nanoparticles than that for the triangular Ag nanoprisms. The fluorescence was quenched for the film with Au nanoparticles. Results show that the nanoparticles can both enhance and quench the fluorescence of the films, which depend mainly on the local surface plasmon resonance (LSPR) of the nanoparticles. When the LSPR of nanoparticles overlaps with the excitation or the emission spectrum of the films, the fluorescence would be enhanced. Otherwise the fluorescence of the films would be quenched.
Publisher
Acta Physica Sinica, Chinese Physical Society and Institute of Physics, Chinese Academy of Sciences
Subject
General Physics and Astronomy
Reference17 articles.
1. Zayats A V, Smolyaninov I I 2003 J. Opt. A: Pure Appl. Opt. 5 s16
2. Tong L M, Xu H X 1992 Acta Phys. Sin. 41 582 (in Chinese) [童廉明, 徐红星 1992 物理学报 41 582]
3. Li G L, He L J, Li J, Li X S, Liang S, Gao M M, Yuan H W 2012 Acta Phys. Sin. 62 197202 (in Chinese) [李国龙, 何力军, 李进, 李学生, 梁森, 高忙忙, 袁海雯 2012 物理学报 62 197202]
4. Gabudean A M, Focsan M, Astilean S 2012 J. Phys. Chem. C 116 12240
5. Wang Y, Zhou X, Wang T, Zhou J 2008 Mater. Lett. 62 3582