title: Plasmonic enhancement of fluorescence on silver nanoparticle films.
abstract: The localized plasmon controlled fluorescence has been discussed by comparing the fluorescence enhancement of dyes on different shaped silver nanoparticle self-assembled films. A trilayer structure, composed of a silver nanoparticle monolayer, a proper thickness polyelectrolyte spacing layer and a dye-adsorbed layer, was constructed to study the plasmon enhanced fluorescence properties. The effective coupling of the plasmon band with the excitation or emission of dye resulted in different enhancement factors. Moreover, the plasmon enhanced fluorescence resonance energy transfer (FRET) of two dyes was observed. The FRET efficiency of the spherical silver nanoparticle self-assembled film had a 2.8-fold increase. The improvement of FRET efficiency via localized surface plasmons would increase the sensitivity of FRET-based bioassays.
authors: State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, People's Republic of China.
authors: Shuping
authors: S
authors: Xu
authors: Yanxin
authors: Y
authors: Cao
authors: Ji
authors: J
authors: Zhou
authors: Xinnan
authors: X
authors: Wang
authors: Xumei
authors: X
authors: Wang
authors: Weiqing
authors: W
authors: Xu