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FLUORESCENCE PROPERTIES OF THE POLYURETHANE WITH ANCHORED STILBENE CHROMOPHORE

G. Strat1, E. Buruiana2, T. Buruiana2, V. Pohoata3, M. Strat3,*

Affiliation

  1. “Gh.Asachi “Technical University of Iasi, Romania
  2. P. Poni Institute of Macromolcular Chemistry Romanian Academy, Iasi
  3. “Al. I. Cuza” University of Iasi, Romania

Abstract

Some aspects of the trans-cis photoisomerism and fluorescent emission of the stilbene chromophore in polyurethane cationomers were studied comparatively with the urethane stilbene diol. The stilbene polycations absorbed at λA = 316 nm and emitted violet-blue light with emission maxima at λF = 444 nm (dimethylformamide solution) and λF = 465 nm (solid state). The redshift of the fluorescent band of the polyurethane stilbene is obvious and suggests that in thin films there are small aggregates of stilbene molecules..

Keywords

Electronic spectra, Emission, Interactions, Aggregate.

Submitted at: July 16, 2004
Accepted at: March 23, 2005

Citation

G. Strat, E. Buruiana, T. Buruiana, V. Pohoata, M. Strat, FLUORESCENCE PROPERTIES OF THE POLYURETHANE WITH ANCHORED STILBENE CHROMOPHORE, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 2, pp. 925-928 (2005)