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  • Title: Boron containing two-photon absorbing chromophores. 2. Fine tuning of the one- and two-photon photophysical properties of pyrazabole based fluorescent bioprobes.
    Author: Hayek A, Bolze F, Bourgogne C, Baldeck PL, Didier P, Arntz Y, Mély Y, Nicoud JF.
    Journal: Inorg Chem; 2009 Oct 05; 48(19):9112-9. PubMed ID: 19728694.
    Abstract:
    New boron containing two-photon absorbing fluorophores have been prepared. Centered on a pyrazabole central core, various conjugated systems and end groups were investigated to modulate their physicochemical properties (alkoxy, diphenylamino, and boron dipyromethene groups). One and two-photon photophysical characterizations were performed, showing efficient fluorescence in organic solvents. High two-photon absorption cross sections were determined in the 500-800 nm range. Two-photon excited microscopy images were also obtained with these new boron containing fluorescent bioprobes with laser intensities in the milliwatt range.
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