Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation
Abstract
Based on spectroscopic measurements selected properties of nonradiative Förster energy transport are studied in uniaxially stretched polyvinyl alcohol thin films for three systems differing in donor and acceptor transition moments orientation relative to the axis of stretching. In particular, donor – acceptor emission anisotropy spectra yield completely different regularities for these systems in uniaxially stretched films, whereas they are similar in unstretched films. In particular it is shown that acceptor fluorescence can be either strongly polarized after nonradiative energy transfer in stretched films or depolarized depending on the angular distribution of acceptor transition moments in the matrix. Donor and acceptor emission anisotropy decays exhibit similar regularities to those of steady-state measurements. The obtained results are analyzed with the help of Monte Carlo simulations.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
OPTICAL MATERIALS
no. 59,
pages 34 - 38,
ISSN: 0925-3467 - Language:
- English
- Publication year:
- 2016
- Bibliographic description:
- Synak A., Bojarski P., Sadownik M., Kułak L., Gryczyński I., Grobelna B., Rangełowa-Jankowska S., Jankowski D., Kubicki A.: Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation// OPTICAL MATERIALS. -Vol. 59, (2016), s.34-38
- DOI:
- Digital Object Identifier (open in new tab) 10.1016/j.optmat
- Verified by:
- Gdańsk University of Technology
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