Journal
CHEMISTRY OF MATERIALS
Volume 16, Issue 23, Pages 4705-4710Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm0496669
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We report a new model for the Forster energy transfer in blends of Nile Red dye in poly-(9,9-dioctylfluorene) WO). We base our discussion on the possible arrangement of the dye molecules distributed in domains surrounded by polymer. These geometric considerations lead to a R-3 functional dependence for the energy transfer, different from the R-6 deduced by Forster for pointlike dipole-dipole interaction. The experimental value found for the Forster radius, namely 3.2 nm, is in good agreement with 3.6 nm obtained from the spectral overlap of donor emission and acceptor absorption.
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