Title

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

Authors

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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