| Literature DB >> 20161182 |
Thomas J Sørensen1, Bo W Laursen, Rafal Luchowski, Tanya Shtoyko, Irina Akopova, Zygmunt Gryczynski, Ignacy Gryczynski.
Abstract
We report a multi-fold enhancement of the fluorescence of methyl-azadioxatriangulenium chloride (Me-ADOTA*Cl) in PVA deposited on a 50 nm thick gold mirror carrying an evaporation induced self-assembly of colloidal silver nanoparticles (Ag-SACs). The average measured increase in fluorescence emission of about 50-fold is accompanied by hot spots with a local enhancement in brigthness close to 200. The long lifetime of the dye allows for the first direct determination of the correlation between the enhancement of emission intensity and the decrease in fluorescence lifetime. The Ag-SACs surface preparation and observed enhancements are highly reproducible. We believe that these robust plasmonic surfaces will find use in sensing platforms for ultrasensitive detection.Entities:
Year: 2009 PMID: 20161182 PMCID: PMC2726976 DOI: 10.1016/j.cplett.2009.05.064
Source DB: PubMed Journal: Chem Phys Lett ISSN: 0009-2614 Impact factor: 2.328