Photophysical characterization of a highly conjugated bipyridyl-based dye synthesized by a unique two-step approach

    Authors

    C. Toro; L. De Boni; S. Yao; K. D. Belfield;F. E. Hernandez

    Comments

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    Abbreviated Journal Title

    J. Phys. Chem. B

    Keywords

    2-PHOTON ABSORPTION PROPERTIES; NONLINEAR OPTICS; METAL-COMPLEXES; CROSS-SECTION; ONE-PHOTON; MOLECULES; SPECTROSCOPY; CHROMOPHORES; SWITCHES; 3-PHOTON; Chemistry, Physical

    Abstract

    In this article, we present a new and simple, yet efficient, two-step approach to synthesize 4,4'-bis(dibutylaminostyrylstyryl)-2,2'-bipyridine with high yield, as well as its linear and nonlinear optical characterizations in THF and toluene solutions. We show that its one- and two-photon absorption spectra are similar in both solvents. Nevertheless, the relaxation processes of this compound exhibit dependence on the solvent polarity. The one- and two-photon induced fluorescence signal of this molecule in solution reveals that its excited state is highly stabilized in THF solution rather than in toluene. Analysis of the fluorescence quantum yield, lifetime, and radiative and nonradiative decay rates are in agreement with Lippert's model for solute-solvent interactions. The optical measurements demonstrate that this dye is a promising candidate for multiphoton fluorescence imaging, optical limiting, and dye lasers.

    Journal Title

    Journal of Physical Chemistry B

    Volume

    112

    Issue/Number

    39

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    12185

    Last Page

    12190

    WOS Identifier

    WOS:000259552000004

    ISSN

    1520-6106

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