Absorption anisotropy studies of polymethine dyes

    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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