Toward Two-Photon Absorbing Dyes with Unusually Potentiated Nonlinear Fluorescence Response
Journal article, 2020
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.
Author
Carlos Benitez-Martin
University of Malaga
Centro Andaluz de Nanomedicina y Biotecnologı́a (BIONAND)
Shiming Li
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Antonio Dominguez-Alfaro
University of Huelva
Francisco Najera
University of Malaga
Centro Andaluz de Nanomedicina y Biotecnologı́a (BIONAND)
E. Perez-Inestrosa
Centro Andaluz de Nanomedicina y Biotecnologı́a (BIONAND)
University of Malaga
Uwe Pischel
University of Huelva
Joakim Andreasson
Chalmers, Chemistry and Chemical Engineering, Chemistry and Biochemistry
Journal of the American Chemical Society
0002-7863 (ISSN) 1520-5126 (eISSN)
Vol. 142 35 14854-14858Subject Categories
Accelerator Physics and Instrumentation
Atom and Molecular Physics and Optics
Other Physics Topics
DOI
10.1021/jacs.0c07377
PubMed
32799520