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M. A. Babu, N. Shakya, P. Prathipati, S. G. Kaskhedikar and A. K. Saxena, “Development of 3D-QSAR Models for 5-Lipoxygenase Antagonists: Chalcones,” Bioorganic & Medicinal Chemistry, Vol. 10, No. 12, 2002, pp. 4035-4041. Hdoi:/10.1016/S0968-0896(02)00313-9

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• TITLE: Excited State Interaction of Laser Dyes and Silver Nanoparticles in Different Media

  AUTHORS: Yusif S. El-Sayed, Mohamad Gaber

  KEYWORDS: Ag Nanoparticles; Laser Dyes; Surfactants, Fluorescence Quenching

  JOURNAL NAME: Advances in Nanoparticles, Vol.1 No.3, November 30, 2012

  ABSTRACT: Quenching the fluorescence of the dyes 3-(4’-dimethylaminophenyl)-1-(1H-pyrrol-2-yl)prop-2-en-1-one (DMAPrP), 3- (4’-dimethylaminophenyl)-1-(2-furanyl)prop-2-en-1-one (DMAFP) and 3-(4’-dimethylaminophenyl)-1-(2-thienyl)prop- 2-en-1-one (DMATP) has been investigated in the presence of silver cation and silver nanoparticles in different media. The results of the quenching experiments were analyzed using Stern-Volmer equation. Quenching the fluorescence of the dyes decreased with increasing medium viscosity. The Stern-Volmer constant (KSV) values in the absence and presence of ethylene glycol show that the quenching efficiencies decrease as the medium viscosity increases indicating that the quenching process is a diffusion-controlled process, and this is consistent with a dynamic-type quenching.