Sensitization of the electrooptical effect by a merocyanine dye in polymers of azobenzene derivatives

Absorption spectra of poly[4-metacryloyloxy-(4′-carboxy-3′-oxy)azobenzene] films and their complexes with cobalt, without additives or doped with a merocyanine dye whose absorption spectrum lay in the near IR region, were studied before and after switching on an external electric field. An external...

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Bibliographic Details
Published in:High energy chemistry 2008-03, Vol.42 (2), p.123-126
Main Authors: Davidenko, N. A., Davidenko, I. I., Savchenko, I. A., Popenaka, A. N., Derevyanko, N. A., Ishchenko, A. A., Kulinich, A. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Physical Chemistry
Processes and Materials for Optical Information Systems
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Summary:Absorption spectra of poly[4-metacryloyloxy-(4′-carboxy-3′-oxy)azobenzene] films and their complexes with cobalt, without additives or doped with a merocyanine dye whose absorption spectrum lay in the near IR region, were studied before and after switching on an external electric field. An external electric field effect was found on the light transmittance of films within the dye absorption region, which indicated sensitization of the electrooptical effect. The electrooptical properties of the films resulted from spatial reorientation of dipole moments of azobenzene groups in an external electric field, which initiated turning of dye molecules. A phenomenological model was proposed to explain the sensitization of the electrooptical effect.
ISSN:0018-1439
1608-3148
DOI:10.1134/S0018143908020112