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Dye fluorescence quenching by newly synthesized silver nanoparticles

Paper ID Volume ID Publish Year Pages File Format Full-Text
26698 43971 2014 9 PDF Available
Title
Dye fluorescence quenching by newly synthesized silver nanoparticles
Abstract

•Novel synthesized silver nanoparticles (Ag NPs) using diamine-sarcophagine (DiAmsar) in DMF solution is reported.•Energy transfer between dye and Ag NPs was studied using fluorescence quenching.•The antibacterial activity of Ag NPs was assessed by disk diffusion method against bacteria.

New types of silver nanoparticles (Ag NPs) were prepared by the reduction of silver trifluoroacetate with diamine-sarcophagine (DiAmsar) in DMF solution. Nanoparticles growth, morphology, and chemical composition were determined by ultraviolet–visible spectroscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy, respectively. The effect of prepared Ag NPs on the fluorescence quenching of the dyes rhodamine 6G and 4-hydroxycoumarin were investigated in different temperatures. The results of the quenching experiments were analyzed using Stern–Volmer equation. The Stern–Volmer constant values showed that the quenching efficiencies decreased as the temperature increases indicating that the quenching process was a dynamic-type quenching. Moreover, the energy transfer behavior between Ag NPs and dye molecules were interrogated using Förster/fluorescence resonance energy transfer and nanomaterial surface energy transfer models. The anti-bacterial activities of Ag NPs were assessed against the Staphylococcus aureus and Escherichia coli bacteria. Results showed that the entitled Ag NPs have excellent antibacterial properties.

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Keywords
Fluorescence quenching; Dye; Silver nanoparticle; Energy transfer; DiAmsar.
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Dye fluorescence quenching by newly synthesized silver nanoparticles
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 276, 15 February 2014, Pages 113–121
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us