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 - 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

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


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