Photoluminescence studies study of a phenyl-substituted PPV

Details Photoluminescence studies study of a phenyl-substituted PPV Photoluminescence studies study of a phenyl-substituted PPV

2004-02-04

arxiv.org/abs/physics/0402016v1

Physics

Chemical Physics

7 pages, 5 figures

Scientific paper

We report on the photophysics of a phenyl-substituted PPV both in solution and as a film. For both systems we have studied the decay of the photoluminescence and of the emission anisotropy for a large set of wavelengths spanning the entire photoluminescence spectrum. At long wavelengths the decay behavior is that of an interchain species. At the shortest wavelengths the decay of the photoluminescence from the film is observed to have a long-lived component, in addition to the rapidly decaying component usually associated with energy transfer. We attribute this slow component to emission by isolated intrachain excitons with reduced nonradiative relaxation.

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