Excitation energy migration between elongated fluorophores in uniaxially oriented polyvinyl alcohol films

P. Bojarski; I. Gryczyński; L. Kułak; A. Synak; A. Barnett

doi:10.1016/j.cplett.2006.09.076

Excitation energy migration between elongated fluorophores in uniaxially oriented polyvinyl alcohol films

P. Bojarski, I. Gryczyński, L. Kułak, A. Synak, A. Barnett

Microbiology, Immunology & Genetics

Research output: Contribution to journal › Article

7 Scopus citations

Abstract

Nonradiative multistep energy migration is studied for 3,3′-diethylthiacarbocyanine iodide (DTCI) in uniaxially stretched and unstretched poly(vinyl alcohol) films. The results of fluorescence anisotropy decay measurements were found to be extremely different for unstretched and (stretched) systems. For disordered systems, fast depolarization was observed due to effective energy migration between randomly distributed fluorophores. However, for partly ordered systems, much slower depolarization was found as a result of preferential angular distribution of transition dipole moments of identical fluorophores. These results and properties of energy transport in uniaxially stretched polymer films are analyzed using the technique of Monte-Carlo simulation.

Original language	English
Pages (from-to)	94-99
Number of pages	6
Journal	Chemical Physics Letters
Volume	431
Issue number	1-3
DOIs	https://doi.org/10.1016/j.cplett.2006.09.076
State	Published - 11 Nov 2006

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Bojarski, P., Gryczyński, I., Kułak, L., Synak, A., & Barnett, A. (2006). Excitation energy migration between elongated fluorophores in uniaxially oriented polyvinyl alcohol films. Chemical Physics Letters, 431(1-3), 94-99. https://doi.org/10.1016/j.cplett.2006.09.076

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abstract = "Nonradiative multistep energy migration is studied for 3,3′-diethylthiacarbocyanine iodide (DTCI) in uniaxially stretched and unstretched poly(vinyl alcohol) films. The results of fluorescence anisotropy decay measurements were found to be extremely different for unstretched and (stretched) systems. For disordered systems, fast depolarization was observed due to effective energy migration between randomly distributed fluorophores. However, for partly ordered systems, much slower depolarization was found as a result of preferential angular distribution of transition dipole moments of identical fluorophores. These results and properties of energy transport in uniaxially stretched polymer films are analyzed using the technique of Monte-Carlo simulation.",

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AU - Synak, A.

AU - Barnett, A.

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