Optical properties

Fluorescence properties of a composite material based on the 5CB nematic liquid crystal with gold nanoparticles

Yu. P. Piryatinskii, A. Yu. Vakhnin, A. B. Verbitskii, A. K. Kadashchuk

Institute of Physics, National Academy of Sciences of Ukraine, Kiev

Abstract: The steady-state and time-resolved fluorescence spectra of $n$-pentyl-$n'$-cyanobiphenyl and a related composite material with gold nanoparticles in the liquid crystalline and solid states have been investigated. The introduction of gold nanoparticles into the liquid crystal leads to a noticeable quenching of fluorescence in the emission region of the predimer and excimer states of cyanobiphenyl. In the solid phase, a quenching of free excitons and a short-wavelength shift of fluorescence bands have been observed.

Received: 20.04.2011

 English version: Physics of the Solid State, 2011, 53:11, 2333–2338

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