A New Blue Light-Emitting Oligofluorene Glass: Synthesis, Characterization And Photophysical Properties
Excitation anisotropy; Fluorescence; Oligofluorene derivative; Organic glass
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. Copyright © 2003 John Wiley & Sons, Ltd.
Journal of Physical Organic Chemistry
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Belfield, Kevin D.; Bondar, Mykhailo V.; and Morales, Alma R., "A New Blue Light-Emitting Oligofluorene Glass: Synthesis, Characterization And Photophysical Properties" (2003). Scopus Export 2000s. 1831.