Electronic states of the fluorophore 9,10-bis(phenylethynyl)anthracene (BPEA): A synchrotron radiation linear dichroism investigation

Peter W. Thulstrup, Nykola C. Jones, Søren V. Hoffmann, Jens Spanget-Larsen

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The electronic transitions of 9,10-bis(phenylethynyl)anthracene (BPEA) were investigated by synchrotron radiation linear dichroism (SRLD) spectroscopy in the range 20,000–58,000 cm–1 (500–170 nm) on molecular samples aligned in stretched polyethylene. The investigation was supported by variable temperature spectroscopy and by quantum chemical calculations in the LCOAO and TD-DFT models. The combined experimental and theoretical evidence leads to characterization of several previously unobserved transitions and provides a revised polarization analysis of the visible absorption band of BPEA.

Original languageEnglish
JournalChemical Physics Letters
Volume559
Pages (from-to)35-40
Number of pages6
ISSN0009-2614
DOIs
Publication statusPublished - Feb 2013

Keywords

  • Synchrotron radiation
  • Linear dichroism
  • UV-Vis absorption
  • Electronic transitions
  • Polarization

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