Abstract
The synthesis and photophysical characterization of a PPV-type copolymer containing a fluorene derivative alternated with thiophene units is presented: poly(9,9’-dioctylfluorene-thiophene) (LAPPS29). Photophysical studies demonstrated that in the solid state only preformed ground state aggregates are responsible for exciton formation. These aggregates are formed with a wide range of size distribution. The emission from isolated segments is quenched either by resonant energy transfer, or by migration processes. Also, the main photovoltaic parameters are discussed in connection with the photophysical behavior.
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Acknowledgements
CNPq (Process 202152/2007-3), FAPESP, CAPES, CNPq/FAPESP/INEO for financial supports and fellowships. Thanks are due to Professor Patrick Meares (Exeter University, Great Britain) for helpful discussions in the preparation of the manuscript.
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Rodrigues, P.C., Grova, I., Coutinho, D.J. et al. Photophysical and photovoltaic properties of a PPV type copolymer containing alternated fluorene and thiophene units. J Polym Res 19, 9828 (2012). https://doi.org/10.1007/s10965-012-9828-2
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DOI: https://doi.org/10.1007/s10965-012-9828-2