Spectral properties of several fluorene derivatives with potential as two-photon fluorescent dyes

    Authors

    K. D. Belfield; M. V. Bondar; O. V. Przhonska; K. J. Schafer;W. Mourad

    Comments

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    Abbreviated Journal Title

    J. Lumines.

    Keywords

    emission spectra; excitation spectra; photophysical properties; excitation anisotropy; electronic transitions; fluorene derivatives; Optics

    Abstract

    Investigations of the absorption, steady-state fluorescence, excitation and excitation anisotropy properties of several fluorene derivatives, (7-benzothiazol-2-yl-9,9-didecylfluoren-2-yl)-diphenylamine, 9,9-didecyl-2 7-bis-(N,N-diphenylamino)fluorene and {4-[2-(7-diphenylamino-9,9-diethylfluoren-2-yl)vinyl]phenyl}phosphoric acid diethyl ester, in liquid solutions have been conducted. Spectral characteristics of these compounds, including fluorescence quantum yields, were measured in acetonitrile, methylene chloride, tetrahydrofuran and hexane at room temperature. Excitation anisotropy spectra provided a means to determine the nature of the short wavelength absorption bands as an electronic transition into a higher excited singlet state. It was found that excitation spectra in the short wavelength region do not correspond to the absorption bands that are correlated with the wavelength dependence of the fluorescence quantum yields. Major reasons of such spectral behavior are discussed. (C) 2002 Elsevier Science B.V. All rights reserved.

    Journal Title

    Journal of Luminescence

    Volume

    97

    Issue/Number

    2

    Publication Date

    1-1-2002

    Document Type

    Article

    Language

    English

    First Page

    141

    Last Page

    146

    WOS Identifier

    WOS:000176076500007

    ISSN

    0022-2313

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