Synthesis and characterization of the multi-photon absorption and excited-state properties of a neat liquid 4-propyl 4 '-butyl diphenyl acetylene

    Authors

    I. C. Khoo; S. Webster; S. Kubo; W. J. Youngblood; J. D. Liou; T. E. Mallouk; P. Lin; D. J. Hagan;E. W. Van Stryland

    Abstract

    The synthesis, characterization, and quantitative electronic structure modeling of multi-photon absorption properties of a neat liquid L34 (4-propyl 4'-butyl diphenyl acetylene) are reported. The liquid is ( linearly) transparent in the visible spectrum, but possesses large two-photon absorption (2PA) and 2PA-induced singlet and triplet excited-state absorption as measured by the Z-scan technique and non-linear transmission measurements using both picosecond and nanosecond pulses. The most dominant contributions to the intensity-dependent non-linear absorption come from the 2PA-induced triplet excited states in the nanosecond time regime. We also present transient absorption spectra of the liquid obtained by nanosecond laser-flash photolysis and compare these results with electronic structure calculations. The energy of the absorption bands, both singlet and triplet are in reasonable agreement with calculations performed with Gaussian 03. The experimentally measured spectra and theoretical electronic structure modeling provide information about the energy levels of the excited states of this liquid, including 2PA and 2PA-induced process that is responsible for its non-linear optical properties.

    Journal Title

    Journal of Materials Chemistry

    Volume

    19

    Issue/Number

    40

    Publication Date

    1-1-2009

    Document Type

    Article

    First Page

    7525

    Last Page

    7531

    WOS Identifier

    WOS:000270594100014

    ISSN

    0959-9428

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