Parametric Characterization of Spectroscopic Properties of Malachite Green in Sol-Gel Derived Silica Matrices with a Prospective Analysis of Optical Usage
Pages : 1977-1981
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)