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Proceedings Paper

Novel two-photon absorbing styrylpyridine-based multi-branched dyes: towards pH responsive dyes for biological imaging
Author(s): André-Jean Attias; Fabrice Mathevet; David Kréher; Patrice Baldeck; Clément Ricard; Boudewijn van der Sanden
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Paper Abstract

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 absorptivity. The results indicate 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 serve as pH-sensitive TPA dyes. Preliminary results related to biological applications will be presented.

Paper Details

Date Published: 13 February 2006
PDF: 7 pages
Proc. SPIE 6117, Organic Photonic Materials and Devices VIII, 61170A (13 February 2006); doi: 10.1117/12.650998
Show Author Affiliations
André-Jean Attias, Lab. de Chimie des Polyméres, UMR7610-CNRS, Univ. Paris (France)
Fabrice Mathevet, Lab. de Chimie des Polyméres, UMR7610-CNRS, Univ. Paris (France)
David Kréher, Lab. de Chimie des Polyméres, UMR7610-CNRS, Univ. Paris (France)
Patrice Baldeck, Lab. de Spectrométrie Physique, Univ. Joseph Fourier (France)
Clément Ricard, Lab. de Neuro-imagerie Fonctionnelle et Métabolique, INSERM U594 (France)
Boudewijn van der Sanden, Lab. de Neuro-imagerie Fonctionnelle et Métabolique, INSERM U594 (France)


Published in SPIE Proceedings Vol. 6117:
Organic Photonic Materials and Devices VIII
James G. Grote; Francois Kajzar; Nakjoong Kim, Editor(s)

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