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Proceedings Paper

Peculiarities of absorption spectra of organic dyes in electric field
Author(s): Nikolay A. Davidenko; Aleksandr A. Ishchenko; Mikhail A. Zabolotny
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Paper Abstract

The change in an external constant electric field of an electronic absorption coefficient of polymer films, doped by symmetric cationic polymethine dye is researched. This effect are characterised by an increase of intensity on shortwavelength edge of a band and its decrease on long-wavelength edge. The charge distribution in dye cation in model electric field 107 - 108 V/m of point charges and capacitor was calculated by method AMI. On the basis of the quantum chemical calculations the spectral regularities in electric field is interpreted by the change of electronic charge in the cation. The theoretical model based on change of value of eigen frequencies of charged anharmonic oscillators under operation field is offered for the description ofobserved effects. The experimental spectra well correlate with calculated theoretically.

Paper Details

Date Published: 20 July 2004
PDF: 9 pages
Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); doi: 10.1117/12.569615
Show Author Affiliations
Nikolay A. Davidenko, Taras Shevchenko National Univ. of Kyiv (Ukraine)
Aleksandr A. Ishchenko, Institute of Organic Chemistry (Ukraine)
Mikhail A. Zabolotny, Taras Shevchenko National Univ. of Kyiv (Ukraine)

Published in SPIE Proceedings Vol. 5507:
XVI International Conference on Spectroscopy of Molecules and Crystals
Galyna O. Puchkovska; Tatiana A. Gavrilko; Olexandr I. Lizengevich, Editor(s)

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