Artículos de revistas
Photophysical and photovoltaic properties of a PPV type copolymer containing alternated fluorene and thiophene units
Registro en:
Journal of Polymer Research. Springer, v.19, n.3, 2012
1022-9760
WOS:000302641900009
10.1007/s10965-012-9828-2
Autor
Rodrigues, Paula C.
Grova, Isabel
Coutinho, Douglas J.
Domingues, Raquel A.
Oh, Heong Sub
Seo, Jangwon
Faria, Roberto M.
Atvars, Teresa D. Z.
Prasad, Paras N.
Akcelrud, Leni
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) 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. 19 3 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)