Two-photon absorption in quadrupolar bis(acceptor)-terminated chromophores with electron-rich bis(heterocycle)vinylene bridges

    Authors

    S. J. Zheng; A. Leclercq; J. Fu; L. Beverina; L. A. Padilha; E. Zojer; K. Schmidt; S. Barlow; J. D. Luo; S. H. Jiang; A. K. Y. Jen; Y. P. Yi; Z. G. Shuai; E. W. Van Stryland; D. J. Hagan; J. L. Bredas;S. R. Marder

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    Abbreviated Journal Title

    Chem. Mat.

    Keywords

    CROSS-SECTIONS; COOPERATIVE ENHANCEMENT; FLUORESCENCE MICROSCOPY; DIFFERENTIAL OVERLAP; INTERMEDIATE NEGLECT; SINGLE-BEAM; SPECTROSCOPY; MOLECULES; DERIVATIVES; DONOR; Chemistry, Physical; Materials Science, Multidisciplinary

    Abstract

    Two-photon absorption spectra for a range of bis(acceptor)-substituted bis(dibutoxythienyl)ethene and bis(N-hexylpyrrolyl)ethene chromophores have been recorded using Z-scan and white-light-continuum pump-probe techniques. All the chromophores studied show strong near-infrared two-photon absorption with cross sections in the range of 2400-5900 GM (1 GM = 1 x 10(-50) cm(4) s/photon) at photon wavelengths between 1.0 and 1.3 mu m; cross sections as high as 10000 GM can be accessed close to the one-photon absorption edge. Quantum-chemical calculations reproduce the experimentally observed variations of the two-photon properties with the chemical structure.

    Journal Title

    Chemistry of Materials

    Volume

    19

    Issue/Number

    3

    Publication Date

    1-1-2007

    Document Type

    Article

    Language

    English

    First Page

    432

    Last Page

    442

    WOS Identifier

    WOS:000243839600017

    ISSN

    0897-4756

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