A new blue light-emitting oligofluorene glass: Synthesis, characterization and photophysical properties

Kevin D. Belfield, Mykhailo V. Bondar, Alma R. Morales, Ozlem Yavuz, Olga V. Przhonska

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

The synthesis, electrochemical, thermal and spectroscopic properties of the oligoaminofluorene derivative 9,9-didecyl-N,N-bis(9,9-didecyl-7-N,N-diphenylaminofluoren-2-yl)-N,N-diphenylflu orene-2,7-diamine (4), an organic glass, were investigated in solvents of differing polarity at room and 77 K temperature, including quantum yield and lifetime. The oligomer exhibited a glass transition near room temperature and was thermally stable to ca 400°C. Intramolecular interactions between the fluorenyl chromophores were investigated. The relatively complex nature of the emission band of 4 was characterized by reduced anisotropy and two components in its fluorescence decay at room temperature. Emission spectra of 4 at 77 K exhibited a single component in its fluorescence decay and a dependence on the excitation wavelength at the red edge of the absorption band. A spectroscopic model of 4 is proposed to explain the observed spectral behavior of this potentially important electroluminescent material.

Original languageEnglish (US)
Pages (from-to)194-201
Number of pages8
JournalJournal of Physical Organic Chemistry
Volume16
Issue number3
DOIs
StatePublished - Mar 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physical and Theoretical Chemistry
  • Organic Chemistry

Keywords

  • Excitation anisotropy
  • Fluorescence
  • Oligofluorene derivative
  • Organic glass

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