Two-photon absorption of a supramolecular pseudoisocyanine J-aggregate assembly

    Authors

    K. D. Belfield; M. V. Bondar; F. E. Hernandez; O. V. Przhonska;S. Yao

    Comments

    Authors: contact us about adding a copy of your work at STARS@ucf.edu

    Abbreviated Journal Title

    Chem. Phys.

    Keywords

    PIC; J-aggregates; two-photon absorption; excitation anisotropy; ONE-PHOTON; SPECTROSCOPY; ENHANCEMENT; FLUORESCENCE; DYE; RELAXATION; EXCITATION; DYNAMICS; WATER; SIZE; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

    Abstract

    Linear spectral properties, including excitation anisotropy, of pseudoisocyanine or 1, 1'-diethyl-2,2'-cyanine iodide (PIC) J-aggregates in aqueous solutions with J-band position at 573 nm were investigated. Two-photon absorption of PIC J-aggregates and monomer molecules was studied using an open aperture Z-scan technique. A strong enhancement of the two-photon absorption cross-section of PIC in the supramolecular J-aggregate assembly was observed in aqueous solution. This enhancement is attributed to a strong coupling of the molecular transition dipoles. No two-photon absorption at the peak of the J-band was detected. (c) 2005 Elsevier B.V. All rights reserved.

    Journal Title

    Chemical Physics

    Volume

    320

    Issue/Number

    2-3

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    118

    Last Page

    124

    WOS Identifier

    WOS:000234622900006

    ISSN

    0301-0104

    Share

    COinS