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Toward Two-Photon Absorbing Dyes with Unusually Potentiated Nonlinear Fluorescence Response.


ABSTRACT: The combination of two two-photon-induced processes in a Förster resonance energy transfer (FRET)-operated photochromic fluorene-dithienylethene dyad lays the foundation for the observation of a quartic dependence of the fluorescence signal on the excitation light intensity. While this photophysical behavior is predicted for a four-photon absorbing dye, the herein proposed approach opens the way to use two-photon absorbing dyes, reaching the same performance. Hence, the spatial resolution limit, being a critical parameter for applications in fluorescence imaging or data storage with common two-photon absorbing dyes, is dramatically improved.

SUBMITTER: Benitez-Martin C 

PROVIDER: S-EPMC7498150 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature

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Toward Two-Photon Absorbing Dyes with Unusually Potentiated Nonlinear Fluorescence Response.

Benitez-Martin Carlos C   Li Shiming S   Dominguez-Alfaro Antonio A   Najera Francisco F   Pérez-Inestrosa Ezequiel E   Pischel Uwe U   Andréasson Joakim J  

Journal of the American Chemical Society 20200821 35


The combination of two two-photon-induced processes in a Förster resonance energy transfer (FRET)-operated photochromic fluorene-dithienylethene dyad lays the foundation for the observation of a quartic dependence of the fluorescence signal on the excitation light intensity. While this photophysical behavior is predicted for a four-photon absorbing dye, the herein proposed approach opens the way to use two-photon absorbing dyes, reaching the same performance. Hence, the spatial resolution limit,  ...[more]

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