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20 July 2004 Peculiarities of absorption spectra of organic dyes in electric field
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Proceedings Volume 5507, XVI International Conference on Spectroscopy of Molecules and Crystals; (2004) https://doi.org/10.1117/12.569615
Event: XVI International Conference on Spectroscopy of Molecules and Crystals, 2003, Sevastopol, Ukraine
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.
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Nikolay A. Davidenko, Aleksandr A. Ishchenko, and Mikhail A. Zabolotny "Peculiarities of absorption spectra of organic dyes in electric field", Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); https://doi.org/10.1117/12.569615
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