Artículos de revistas
Photophysical and photovoltaic properties of a PPV type copolymer containing alternated fluorene and thiophene units
Fecha
2012Registro en:
JOURNAL OF POLYMER RESEARCH, DORDRECHT, v. 19, n. 3, supl. 1, Part 1, pp. 3825-3834, MAR, 2012
1022-9760
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 Mendonça
Atvars, Teresa D. Z.
Prasad, Paras N.
Akcelrud, Leni
Institución
Resumen
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.