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Literature DB >> 24031096

Gold Nanoparticle Based Surface Enhanced Fluorescence For Detection of Organophosphorus Agents.

Samuel S R Dasary¹, Uma S Rai, Hongtao Yu, Yerramilli Anjaneyulu, Madan Dubey, Paresh Chandra Ray.

Abstract

Organophosphorus agents (OPA) represent a serious concern to public safety as nerve agents and pesticides. Here we report the development of gold nanoparticle based surface enhanced fluorescence (NSEF) spectroscopy for rapid and sensitive screening of organophosphorus agents. Fluorescent from Eu3+ ions that are bound within the electromagnetic field of gold nanoparticles exhibit a strong enhancement. In the presence of OPA, Eu3+ ions are released from the gold nanoparticle surface and thus a very distinct fluorescence signal change was observed. We discussed the mechanism of fluorescence enhancement and the role of OPA for fluorescence intensity change in the presence of gold nanoparticles.

Entities: Chemical Disease Species

Year: 2008 PMID： 24031096 PMCID： PMC3768136 DOI： 10.1016/j.cplett.2008.05.082

Source DB: PubMed Journal: Chem Phys Lett ISSN： 0009-2614 Impact factor: 2.328

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