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Using localized surface plasmons to modify the optical properties and conformational rearrangements of organic dye molecules

Research paper by N. A. Toropov, N. B. Leonov, T. A. Vartanyan

Indexed on: 28 Dec '12Published on: 28 Dec '12Published in: Bulletin of the Russian Academy of Sciences: Physics



Abstract

Optical properties of the molecular layers of cyanine dyes and their modification in a nearby field of silver nanoparticles on a sapphire substrate are investigated experimentally. Enhancement of the fluorescence and absorption intensity of organic molecules in the presence of silver nanoparticles is observed. The results from photomodifications of the molecular layers’ absorption properties with and without the presence of silver nanoparticles are described.