Impact of laser ablated gold nanoparticles on absorption and fluorescence of Rhodamine 6G in Methyl Methacrylate

Sebastian, Suneetha; Sooraj, S.; Aaryan, Animesh; Peter, Jaison; Namboori, V. P. N; Vallaban, C. P. Girija; Radhakrishnan, P.; Kailasnath, M.

doi:10.1109/icoe.2012.6409575

Cited by 1 publication

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“…Fluorescence quenching of Rh6G in Au nanocomposite polymers was investigated by Karthikeyan (2010), and found that the fluorescence decay rate of Rh6G changes because of the presence of AuNPs, and this change depends on the particle size. Sebastian et al (2012) investigated the influence of laser ablated gold nanoparticles on the absorption and fluorescence spectra of Rh6G in Methyl Methacrylate. He has reported, the absorption peak of Rh6G in Methyl Methacrylate in the presence of gold nanoparticles has enhanced and the fluorescence peak has quenched.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence quenching of Rhodamine 6G with different concentrations by laser ablated gold nanoparticles

Barzan

Hajiesmaeilbaigi

2015

Opt Quant Electron

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Colloidal gold nanoparticles are prepared by laser ablation method and characterized by UV-Visible spectrometry and Transmission Electron Microscopy. Fluorescence quenching of Rhodamine 6G dye with different concentration, from 0.05 to 15 lM, in the presence of gold nanoparticles have been investigated. The optical absorption and fluorescence emission of samples are studied. Shift of the fluorescence peaks in the presence of gold nanoparticles are the same as the absorption peaks for different concentrations. The stokes shift of Rhodamine 6G in different concentrations with and without gold nanoparticles is constant. Experimental quantum yield are calculated. Due to the local field enhancement by gold nanoparticles, the absorbed power of the samples in presence of nanoparticles are increased and the fluorescence intensity and fluorescence quantum yield are decreased. Also, the energy transfer efficiency is measured. Experimental results showed that at dye concentration range of our studies the presence of gold nanoparticles in the mixture results in fluorescence quenching.

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Section: Introductionmentioning

confidence: 99%