Thermal-lens study on the distance-dependent energy transfer from rhodamine 6g to gold nanoparticles

B. Rajesh Kumar, N. Shemeena Basheer, Achamma Kurian, Sajan D. George

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A study on energy transfer from the Rhodamine 6G (donor) to gold nanopar-ticles (acceptor) is investigated using a laser-based dual-beam thermal-lens technique. The nanoparticles are observed to quench the intrinsic fluorescence of the dye molecule via a nonradiative energy transfer mechanism. The influence of nanoparticle concentration (0.09 nM to 0.24 nM) on the energy transfer mechanism with Rhodamine 6G (1 μM) is investigated. Analysis of the results indicates that the energy transfer efficiency is high (more than 50 %) in the presence of nanoparticles and the efficiency is enhanced with an increase in the nanoparticle concentration. The distance between the nanoparticle and dye molecule is evaluated on the basis of the nanomaterial surface energy transfer model. The thermal-lens studies probe the nonradiative path of de-excitation of the excited molecule, and the comparison between this technique and the conventional fluorescence method in measuring the distance as well as the energy-transfer efficiency clearly indicates that the thermal-lens technique is a complementary approach to study the energy-transfer mechanism between a donor and an acceptor.

Original languageEnglish
Pages (from-to)1982-1992
Number of pages11
JournalInternational Journal of Thermophysics
Volume34
Issue number10
DOIs
Publication statusPublished - 01-12-2013

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thermal lensing
rhodamine
energy transfer
gold
nanoparticles
dyes
molecules
fluorescence
surface energy
probes
excitation
lasers

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Kumar, B. Rajesh ; Basheer, N. Shemeena ; Kurian, Achamma ; George, Sajan D. / Thermal-lens study on the distance-dependent energy transfer from rhodamine 6g to gold nanoparticles. In: International Journal of Thermophysics. 2013 ; Vol. 34, No. 10. pp. 1982-1992.
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Thermal-lens study on the distance-dependent energy transfer from rhodamine 6g to gold nanoparticles. / Kumar, B. Rajesh; Basheer, N. Shemeena; Kurian, Achamma; George, Sajan D.

In: International Journal of Thermophysics, Vol. 34, No. 10, 01.12.2013, p. 1982-1992.

Research output: Contribution to journalArticle

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AU - Basheer, N. Shemeena

AU - Kurian, Achamma

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N2 - A study on energy transfer from the Rhodamine 6G (donor) to gold nanopar-ticles (acceptor) is investigated using a laser-based dual-beam thermal-lens technique. The nanoparticles are observed to quench the intrinsic fluorescence of the dye molecule via a nonradiative energy transfer mechanism. The influence of nanoparticle concentration (0.09 nM to 0.24 nM) on the energy transfer mechanism with Rhodamine 6G (1 μM) is investigated. Analysis of the results indicates that the energy transfer efficiency is high (more than 50 %) in the presence of nanoparticles and the efficiency is enhanced with an increase in the nanoparticle concentration. The distance between the nanoparticle and dye molecule is evaluated on the basis of the nanomaterial surface energy transfer model. The thermal-lens studies probe the nonradiative path of de-excitation of the excited molecule, and the comparison between this technique and the conventional fluorescence method in measuring the distance as well as the energy-transfer efficiency clearly indicates that the thermal-lens technique is a complementary approach to study the energy-transfer mechanism between a donor and an acceptor.

AB - A study on energy transfer from the Rhodamine 6G (donor) to gold nanopar-ticles (acceptor) is investigated using a laser-based dual-beam thermal-lens technique. The nanoparticles are observed to quench the intrinsic fluorescence of the dye molecule via a nonradiative energy transfer mechanism. The influence of nanoparticle concentration (0.09 nM to 0.24 nM) on the energy transfer mechanism with Rhodamine 6G (1 μM) is investigated. Analysis of the results indicates that the energy transfer efficiency is high (more than 50 %) in the presence of nanoparticles and the efficiency is enhanced with an increase in the nanoparticle concentration. The distance between the nanoparticle and dye molecule is evaluated on the basis of the nanomaterial surface energy transfer model. The thermal-lens studies probe the nonradiative path of de-excitation of the excited molecule, and the comparison between this technique and the conventional fluorescence method in measuring the distance as well as the energy-transfer efficiency clearly indicates that the thermal-lens technique is a complementary approach to study the energy-transfer mechanism between a donor and an acceptor.

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