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Parametric Characterization of Spectroscopic Properties of Malachite Green in Sol-Gel Derived Silica Matrices with a Prospective Analysis of Optical Usage

Author : D.Bora and S.Hazarika

Pages : 1977-1981
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Spectroscopic properties of Malachite green (MG) confined in porous matrix of sol gel silica glasses is studied extensively. Variation of absorbance and fluorescence intensities, radiative and non-radiative transition probabilities with dye concentration in the glasses is reported. Observed fluorescence quantum yield of MG is increased in the matrices by an order of ~103 compared to that in solution. Decay time of fluorescence in the matrix is in the range of 2.90 ns to 3.58 ns.

Keywords: Malachite Green dye, Sol-gel silica glass, Quantum yield, Lifetime, rigid cage effect

Article published in International Journal of Current  Engineering  and Technology, Vol.3,No.5(Dec- 2013)







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