title: Fluorescence enhancement of modified silver nanoparticles.
abstract: Surface enhanced fluorescence (SEF) effect of acridine orange fluorophore in the proximity of silver nanoparticles (NPs) has been investigated experimentally in the aqueous solution system. It was found that the SEF effect could be influenced by the distribution of the NPs and the separation between the fluorophore molecule and metal surface. The fluorescence enhancement was improved significantly when Ag NPs was capped with 4-Aminothiophenol (PATP) that was acted as an isolating layer between the metal surface and fluorophore molecules. The results suggest that a proper distribution of metallic NPs and proper separation between fluorophore molecule and the particle surface are important for obtaining an optimal SEF effect.
authors.affiliation: School of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, P. R. China.
authors.forename: Meicen
authors.initials: M
authors.lastname: Liu
authors.forename: Zhenglong
authors.initials: Z
authors.lastname: Zhang
authors.forename: Gaining
authors.initials: G
authors.lastname: Liu
authors.forename: Jun
authors.initials: J
authors.lastname: Dong
authors.forename: Yu
authors.initials: Y
authors.lastname: Sun
authors.forename: Hairong
authors.initials: H
authors.lastname: Zheng
authors.forename: Guian
authors.initials: G
authors.lastname: Li
mesh_terms: D000165:Acridine Orange / Q000737:chemistry*; D000814:Aniline Compounds / Q000737:chemistry; D003102:Colloids / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013438:Sulfhydryl Compounds; D013499:Surface Properties
chemical_list: D000814:Aniline Compounds; D003102:Colloids; D005456:Fluorescent Dyes; D013438:Sulfhydryl Compounds; D012834:Silver; C064316:4-aminothiophenol; D000165:Acridine Orange