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.
Authors
- Anna Synak,
- Piotr Bojarski,
- Michał Sadownik,
- dr hab. Leszek Kułak link open in new tab ,
- Ignacy Gryczyński,
- Beata Grobelna,
- Simeonika Rangełowa-Jankowska,
- Dawid Jankowski,
- Aleksander Kubicki
Additional information
- DOI
- Digital Object Identifier link open in new tab 10.1016/j.optmat
- Category
- Publikacja w czasopiśmie
- Type
- artykuł w czasopiśmie wyróżnionym w JCR
- Language
- angielski
- Publication year
- 2016
