Abstract:A detailed photophysical study of a polymer based on a fluorene derivative is performed through ultrafast nonlinear spectroscopy. The polymer chains are studied in solution, where absorption and emission occur from a disordered distribution of isolated chains, and in solid state as a film, where interchain interactions promote efficient energy transfer. Coherent photoexcitation produces delocalized excitons, which relax and localize on the lowest energy chromophores on the polymer chains on a 100 fs time scale… Show more
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