Work

Metal-enhanced chemiluminescence: Radiating plasmons generated from chemically induced electronic excited states

Year: 2006

Type: article

Abstract: In this letter, we report the observation of metal-enhanced chemiluminescence. Silver Island films, in close proximity to chemiluminescence species, can significantly enhance luminescence intensities; a 20-fold increase in chemiluminescence intensity was observed as compared to an identical control sample containing no silver. This suggests the use of silver nanostructures in the chemiluminescence-based immunoassays used in the biosciences today, to improve signal and therefore analyte detectability. In addition, this finding suggests that surface plasmons can be directly excited by chemically induced electronically excited luminophores, a significant finding toward our understanding of fluorophore-metal interactions and the generation of surface plasmons.

Source: Applied Physics Letters

DOI: 10.1063/1.2195776

Authors: Mustafa H. Chowdhury, Kadir Aslan, Stuart N. Malyn, Joseph R. Lakowicz, Chris D. Geddes

Institutions: University of Maryland, Baltimore, University of Maryland Biotechnology Institute

Language: English

Topic: Gold and Silver Nanoparticles Synthesis and Applications

Subfield: Electronic, Optical and Magnetic Materials

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funders: National Institute of General Medical Sciences, National Center for Research Resources

Awards: Metal-Enhanced Fluorescence RNA Sensing, Center for Fluorescence Spectroscopy