In situ formation of silvernanostructures produced via laser irradiation within sol–gel derived films and their interaction with a fluorescence tagged protein

Graham Hungerford, Marion Toury, David McLoskey, Scott Finnigan, Shaun Gellie, A. Sheila Holmes-Smith

Research output: Contribution to journalArticle

Abstract

The presence of a conducting metal surface is known to affect the emission of a fluorophore in its proximity. This can lead to an enhancement in its fluorescence intensity along with a decrease in the fluorescence lifetime. This phenomenon, sometimes known as metal enhanced fluorescence, has implications in the area of sensing and “lab on a chip” applications. Here controlled, localised use of metallic structures can be advantageous in enhancing the detection of a fluorescent signal. The sol–gel technique has been demonstrated as a useful method by which to produce a biocompatible material. The versatility of the reaction allows for the inclusion of metal ions, which can form metallic nanostructures permitting the potential enhancement of fluorescence to be exhibited. In this work we incorporate silver nitrate within silica sol–gel derived films produced using a simple procedure at relative low temperatures (close to ambient).

Original languageEnglish
Pages (from-to)14720-14726
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume12
Issue number44
DOIs
Publication statusPublished - 1 Jan 2010

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Keywords

  • fluorescence tagged protein
  • laser irradiation
  • silver nanostructures
  • physical chemistry

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