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Photophysical and photovoltaic properties of a PPV type copolymer containing alternated fluorene and thiophene units

  • Paula C. Rodrigues
  • , Isabel Grova
  • , Douglas J. Coutinho
  • , Raquel A. Domingues
  • , Heong Sub Oh
  • , Jangwon Seo
  • , Roberto M. Faria
  • , Teresa D.Z. Atvars
  • , Paras N. Prasad
  • , Leni Akcelrud
  • Universidade Federal do Paraná
  • Universidade de São Paulo
  • Universidade Estadual de Campinas
  • SUNY Buffalo

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

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.

Original languageEnglish
Article number9828
JournalJournal of Polymer Research
Volume19
Issue number3
DOIs
StatePublished - Mar 2012

Keywords

  • Conjugated polymers
  • Fluorene
  • Photophysical properties
  • Photovoltaic cells
  • Thiophene

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