ARTICLE pubs.acs.org/JACS
One-Color Reversible Control of Photochromic Reactions in a Diarylethene Derivative: Three-Photon Cyclization and Two-Photon Cycloreversion by a Near-Infrared Femtosecond Laser Pulse at 1.28 μm Kazuya Mori,† Yukihide Ishibashi,† Hirohisa Matsuda,† Syoji Ito,† Yutaka Nagasawa,† Hirotomo Nakagawa,‡ Kingo Uchida,*,‡ Satoshi Yokojima,§ Shinichiro Nakamura,§ Masahiro Irie,*,^ and Hiroshi Miyasaka*,† †
Division of Frontiers Materials Science, Graduate School of Engineering Science and Center for Quantum Science and Technology under Extreme Conditions, Osaka University, CREST, JST, Toyonaka, Osaka 560-8531, Japan ‡ Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta, Otsu 520-2194, Japan § Mitsubishi Chemical Group Science & Technology Research Center, Inc., Kamoshida-cho 1000, Aoba-ku, Yokohama, 227-8502, Japan ^ Department of Chemistry and Research Center for Smart Molecules, Rikkyo University, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan ABSTRACT: One-color control of colorization/decolorization reactions of diarylethene molecules was attained by using nonresonant high-order multiphoton absorption processes with a near-infrared (NIR) femtosecond laser pulse at 1.28 μm with 35 fs full width at half-maximum (fwhm). The intensity of a rather weak laser pulse (
