Multiphoton-Gated Photochromic Reactions Induced by Pulsed Laser Excitation
In the present chapter, we introduce the multiphoton-gated photochromic reactions in diarylethene and fulgide derivatives induced by picosecond pulsed laser excitation. Mechanisms of these nonlinear reactions are discussed on the basis of the detailed experimental results under various excitation conditions. In addition, one-color reversible control of photochromic reactions through nonresonant two- and three-photon absorption processes under near-IR femtosecond laser pulsed irradiation is presented as another example of the laser-induced switching of the photochemical reactions.
KeywordsMultiphoton excitation Multiple excitation Diarylethene Fulgide Ultrafast laser pulse Cycloreversion Cyclization
We deeply appreciate Professors M. Irie, Y. Yokoyama, S. Kobatake, and K. Uchida for their collaboration. The present work was supported by JSPS KAKENHI Grant Number 26107002, Grant-in-Aid for Scientific Research on Innovative Areas “Photosynergetics,” and the Grants-in-Aid for Scientific Research on Priority Area “New Frontiers in Photochromism” (471).
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