Pyrene-fullerene C60 dyads as light-harvesting antennas

Gerardo Zaragoza-Galán, Jesús Ortíz-Palacios, Bianca X. Valderrama, Alejandro A. Camacho-Dávila, David Chávez-Flores, Víctor H. Ramos-Sánchez, Ernesto Rivera

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

A series of pyrene-fullerene C60 dyads bearing pyrene units (PyFC12, PyFPy, Py2FC12 and PyFN) were synthesized and characterized. Their optical properties were studied by absorption and fluorescence spectroscopies. Dyads were designed in this way because the pyrene moeities act as light-harvesting molecules and are able to produce "monomer" (PyFC12) or excimer emission (PyFPy, Py 2FC12 and PyFN). The fluorescence spectra of the dyads exhibited a significant decrease in the amount of pyrene monomer and excimer emission, without the appearance of a new emission band due to fullerene C60. The pyrene fluorescence quenching was found to be almost quantitative, ranging between 96%-99% depending on the construct, which is an indication that energy transfer occurred from one of the excited pyrene species to the fullerene C 60.

Original languageEnglish (US)
Pages (from-to)352-366
Number of pages15
JournalMolecules
Volume19
Issue number1
DOIs
StatePublished - Jan 2014
Externally publishedYes

Keywords

  • Energy transfer
  • Excimers
  • Fluorescence
  • Fullerene
  • Photovoltaics
  • Pyrene

ASJC Scopus subject areas

  • Analytical Chemistry
  • Chemistry (miscellaneous)
  • Molecular Medicine
  • Pharmaceutical Science
  • Drug Discovery
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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