PH responsive two-photon absorbing functionalized styrylpyridine-based multi-branched dyes

David Kréher, Fabrice Mathevet, Patrice Baldeck, Clément Ricard, Boudewijn Van Der Sanden, André Jean Attias

    Research output: Contribution to journalArticlepeer-review


    We report on the design, synthesis and optical properties of new two-photon absorbing multi-branched chromophores, based on a pyridine core. Measurements of TPA using the two-photon fluorescence method in the fs regime indicate that these chromophores exhibit two-photon absorption. We show that a change of the substitution of the electron-acceptor core influences significantly the TPA cross sections. Moreover, upon protonation, the TPA properties are greatly enhanced in the 700-900 nm range. Thus, these molecules can be used as pH-sensitive TPA dyes. Preliminary results related to biological applications will be presented as well.

    Original languageEnglish
    Pages (from-to)283-297
    Number of pages15
    JournalNonlinear Optics Quantum Optics
    Issue number2-4
    Publication statusPublished - Jan 1 2015

    All Science Journal Classification (ASJC) codes

    • Statistical and Nonlinear Physics
    • Electronic, Optical and Magnetic Materials
    • Computer Science(all)
    • Atomic and Molecular Physics, and Optics
    • Instrumentation

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