Three-photon absorption of a new series of halogenated fluorene derivatives

    Authors

    I. Cohanoschi; M. Garcia; C. Toro; K. D. Belfield;F. E. Hernandez

    Comments

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    Abbreviated Journal Title

    Chem. Phys. Lett.

    Keywords

    EXCITATION; FLUORESCENCE; ENHANCEMENT; Chemistry, Physical; Physics, Atomic, Molecular & Chemical

    Abstract

    In this Letter, we report the characterization of the pure three-photon absorption and the measurement of the three-photon absorption cross-section (sigma(3)') of a new series of halogenated fluorene derivatives. The three-photon absorption of these compounds corresponds to the S-0 - > S-1 electronic transition. All four compounds presented here have potential application as photosensitizers in deep photodynamic therapy induced via high order nonlinear absorption. The measurements were done using a tunable OPG pumped by a 25 ps Nd-YAG laser, and performing transmittance vs. input intensity as well as open aperture Z-scan at different wavelengths to determine the highest value of sigma(3)'. (c) 2006 Elsevier B.V. All rights reserved.

    Journal Title

    Chemical Physics Letters

    Volume

    430

    Issue/Number

    1-3

    Publication Date

    1-1-2006

    Document Type

    Article

    Language

    English

    First Page

    133

    Last Page

    138

    WOS Identifier

    WOS:000241446900027

    ISSN

    0009-2614

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