Title

Absorption anisotropy studies of polymethine dyes

Authors

Authors

R. S. Lepkowicz; C. M. Cirloganu; O. V. Przhonska; D. J. Hagan; E. W. Van Stryland; M. V. Bondar; Y. L. Slominsky; A. D. Kachkovski;E. I. Mayboroda

Comments

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Abbreviated Journal Title

Chem. Phys.

Keywords

exited-state absorption; polymethine dye; orientation of transition; dipole moments; anisotropy; pump-probe; EXCITED-STATE ABSORPTION; NEGATIVE-DEFECT TRANSPOLYACETYLENE; SQUARYLIUM; MOLECULES; FINITE-LENGTH; CATIONS; ORIENTATION; SOLITONS; MOMENTS; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

Abstract

The determination of the spectral position of the excited states and orientation of the transition dipole moments of polymethine molecules is experimentally measured using two methods: the steady-state fluorescence anisotropy method, and a two-color polarization-resolved pump-probe method. This novel use of the pump-probe method is described in detail and a comparison to the fluorescence method is given. Quantum-chemical modeling on the effects of the bridge structure in the polymethine chromophore on the linear absorption spectrum is also discussed. (C) 2004 Elsevier B.V. All rights reserved.

Journal Title

Chemical Physics

Volume

306

Issue/Number

1-3

Publication Date

1-1-2004

Document Type

Article

Language

English

First Page

171

Last Page

183

WOS Identifier

WOS:000224674000016

ISSN

0301-0104

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