Abstract
The effect of surface plasmon resonance (SPR) of silver nanoparticles (Ag NPs), exposure to radiation, on the optical and photo-physical properties of pyrromethene (PM597) laser dye in liquid and solid media was assessed. 2-hydroxyethyl methacrylate was used as homo-monomer and homo-polymer, while 2-hydroxyethyl methacrylate / methyl methacrylate were used as co-monomer and co-polymer hosts. Ag NPs was prepared and confirmed its size by high resolution transmission electron microscope (HRTEM), UV/vis absorption spectroscopy and also, theoretically by using Mie theory. The molar concentration of prepared NPs was C=339 x 10(-9) mol/L. 40% C (1356 x 10(-9) mol/L) Ag NPs was found to have the optimum distance with (1 x 10(-4) mol/L PM597 in liquid medium and 1 x 10(-3) mol/L PM597 in solid medium) dye molecules according to Metal Enhancement Fluorescence (MEF) model. [40% C Ag NPs: 1 x 10(-3) mol/L PM597] complex samples had 3.12 cm(-1) and 3.89 cm(-1) gain values in homo-and copolymer media, while parent PM597 dye had 2.5 cm(-1) and 3.45 cm(-1) gain values. Also, amplified spontaneous emission (ASE) value of complex samples was 0.455% and 0.538% in case of homo- and copolymer respectively. While it was 0.4% and 0.457% in case of parent PM597 dye in the same sequent media. Finally, photo-stabilities of complex samples had higher values in co-monomer and co-polymer hosts compared with respect to their stabilities in homo-monomer and homo-polymer hosts. (C) 2015 Elsevier B.V. All rights reserved.