Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation

A. Synak, P. Bojarski, M. Sadownik, L. Kułak, I. Gryczynski, B. Grobelna, S. Rangełowa-Jankowska, D. Jankowski, A. Kubicki

Research output: Contribution to journalArticle

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.

Original languageEnglish
Pages (from-to)34-38
Number of pages5
JournalOptical Materials
Volume59
DOIs
StatePublished - 1 Sep 2016

Keywords

  • Emission anisotropy
  • Energy transfer
  • Monte Carlo simulations
  • PVA films
  • Partly ordered systems

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    Synak, A., Bojarski, P., Sadownik, M., Kułak, L., Gryczynski, I., Grobelna, B., Rangełowa-Jankowska, S., Jankowski, D., & Kubicki, A. (2016). Excitation energy transfer in partly ordered polymer films differing in donor and acceptor transition moments orientation. Optical Materials, 59, 34-38. https://doi.org/10.1016/j.optmat.2016.03.005