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Two‐Photon Absorption and the Design of Two‐Photon Dyes
Author(s) -
Pawlicki Miłosz,
Collins Hazel A.,
Denning Robert G.,
Anderson Harry L.
Publication year - 2009
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200805257
Subject(s) - absorption (acoustics) , two photon absorption , photon , two photon excitation microscopy , materials science , optoelectronics , absorption cross section , nanotechnology , optics , chemistry , laser , physics , fluorescence , cross section (physics) , quantum mechanics
Two photons are better than one : This principle applies to a wide range of applications, ranging from engineering to physiology. Recent advances in our understanding of the phenomenon of two‐photon absorption (see picture) and in the design of two‐photon dyes are rapidly increasing the scope of this field.Two‐photon absorption has important advantages over conventional one‐photon absorption, which has led to applications in microscopy, microfabrication, three‐dimensional data storage, optical power limiting, up‐converted lasing, photodynamic therapy, and for the localized release of bio‐active species. These applications have generated a demand for new dyes with high two‐photon absorption cross‐sections. This Review introduces the theory of two‐photon absorption, surveys the wide range of potential applications, and highlights emerging structure–property correlations that can serve as guidelines for the development of efficient two‐photon dyes.