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New Fluoresceins Findings from Babes-Bolyai University Described (Steady-state and time-resolved fluorescence studies on the conjugation of Rose...

September 12, 2014



New Fluoresceins Findings from Babes-Bolyai University Described (Steady-state and time-resolved fluorescence studies on the conjugation of Rose Bengal to gold nanorods)

By a News Reporter-Staff News Editor at Science Letter -- Current study results on Fluoresceins have been published. According to news originating from Cluj Napoca, Romania, by NewsRx correspondents, research stated, "This work examines the fluorescence properties of Rose Bengal (RB) molecules conjugated to cetyltrimethylammonium bromide (CTAB) coated gold nanorods (GNRs) by performing steady-state and time-resolved fluorescence measurements. We show that the quantum yield and fluorescence lifetime can be significantly modified by the electromagnetic coupling of RB to GNRs but the overall fluorescence signal depends also on the environmental conditions in which RB molecules reside in solution or on solid substrate."

Our news journalists obtained a quote from the research from Babes-Bolyai University, "For example, we have observed the increase of fluorescence intensity after binding RB to GNRs (RB@GNR) as result of both non-radiative rate decrease and contribution from the electromagnetic coupling of RB to GNRs. For RB@GNRs conjugates deposited on solid substrate we can provide evidence for a clear metal-enhanced fluorescence (MEF) mechanism by observing the decrease of fluorescence lifetime of RB from an average of 2.1 +/- 0.36 ns, when complexed to CFAB solely, to 1.6 +/- 0.26 ns, when conjugated to GNRs, together with the increase of fluorescence intensity."

According to the news editors, the research concluded: "Our findings contribute to the development and evaluation of novel fluorescent tags based on plasmonic nanoparticles for biomedical applications."

For more information on this research see: Steady-state and time-resolved fluorescence studies on the conjugation of Rose Bengal to gold nanorods. Journal of Molecular Structure, 2014;1073():97-101. Journal of Molecular Structure can be contacted at: Elsevier Science Bv, PO Box 211, 1000 Ae Amsterdam, Netherlands. (Elsevier - www.elsevier.com; Journal of Molecular Structure - www.elsevier.com/wps/product/cws_home/500850)

The news correspondents report that additional information may be obtained from A.M. Gabudean, University of Babes Bolyai, Fac Phys, Cluj Napoca 400084, Romania. Additional authors for this research include R. Groza, D. Maniu and S. Astilean (see also Fluoresceins).

Keywords for this news article include: Cluj Napoca, Romania, Europe, Emerging Technologies, Fluoresceins, Nanorod, Nanotechnology, Rose Bengal

Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC


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Source: Science Letter


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