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Photophysics and photochemistry of xanthene dyes in polymer solutions and films

Journal Article · · J. Phys. Chem.; (United States)
DOI:https://doi.org/10.1021/j150655a023· OSTI ID:6634488
The singlet and triplet lifetimes of erythrosin B and rose bengal, two representative xanthene dyes, are significantly increased by enclosing the dye in a cage of poly(4-vinylpyridine) (PVP). The fluorescence yield, controlled by the rate of intersystem crossing, is also increased by such encapsulation. Parallel effects are observed upon adding the polymer to an ethanolic solution of the xanthene or upon loading the dye into a polymer matrix dispersed on a metal oxide surface. The effect of the polymer on static quenching of the excited dye and the implications of dye-loaded polymer films in solar energy conversion are discussed.
Research Organization:
Univ. of Texas, Austin
OSTI ID:
6634488
Journal Information:
J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 88:11; ISSN JPCHA
Country of Publication:
United States
Language:
English