Förster resonance energy transfer (FRET) with a donor-acceptor system adsorbed on silver or gold nanoisland films

Year: 2009

Authors: Giorgetti E., Cicchi S., Muniz-Miranda M., Margheri G., Del Rosso T., Giusti A., Rindi A., Ghini G., Sottini S., Marcelli A., Foggi P.

Autors Affiliation: ISC CNR, I-50019 Florence, Italy; INSTM, I-50019 Florence, Italy; Univ Florence, Dipartimento Chim Organ, Florence, Italy; Univ Florence, INSTM, Florence, Italy; Univ Florence, Dipartimento Chim, Florence, Italy; Univ Genoa, Dipartimento Chim & Chim Ind, Genoa, Italy; LENS, Florence, Italy; Univ Perugia, Dipartimento Chim, I-06100 Perugia, Italy; INOA CNR, Florence, Italy

Abstract: We observed Forster resonance energy transfer (FRET) with a covalently linked donor-acceptor pair D-A consisting of two naphthalene groups acting as the donors and a benzofurazan group acting as the acceptor and adsorbed onto Ag or Au nanoisland films. The use of metal nanoisland films, which caused a strong enhancement of the Raman signal, permitted description of the adsorption mechanism onto the two metals. The intense fluorescence response of molecular adsorbates and the different behavior of the antenna on Ag and Au nanoislands are partly explained in terms of the radiating plasmon model.

Journal/Review: PHYSICAL CHEMISTRY CHEMICAL PHYSICS

Volume: 11 (42)      Pages from: 9798  to: 9803

More Information: Funding from the Italian FIRB 2004 \”Molecular compounds and hybrid nanostructured materials with resonant and non resonant optical properties for photonic devices\” (contract no. RBNE033KMA) and from PRIN 2007 \”Metal-organic plasmonic nanostructures for sensors\’\’ contract n degrees 2007LN873M_002 is acknowledged.
KeyWords: energy transfer; excimers; enhanced Raman-scattering; surface-plasmon resonance; fluorescence
DOI: 10.1039/b909123h

ImpactFactor: 4.116
Citations: 20
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