Primary Processes in Photochromic Reaction of 4-Diethylamino-4′-dimethylamino-2-hydroxychalcone in Toluene

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  • Kunihiro Tokumura
    Division of Life Science, Graduate School of Natural Science and Technology, Kanazawa University
  • Naoto Taniguchi
    Division of Life Science, Graduate School of Natural Science and Technology, Kanazawa University
  • Takashi Kimura
    Materials Science and Chemical Engineering, Faculty of Engineering, Shizuoka University
  • Ryoka Matsushima
    Materials Science and Chemical Engineering, Faculty of Engineering, Shizuoka University

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<jats:title>Abstract</jats:title> <jats:p>A photochromic behavior was found for trans-4-diethylamino-4′-dimethylamino-2-hydroxychalcone in toluene, and colored species undergoing dark reaction to regenerate trans-isomer may be ascribed to cis-isomer with the lifetime of 77 min at room temperature. It is demonstrated that a trans→cis isomerization in the lowest triplet state is significantly responsible for the primary process of the coloration.</jats:p>

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  • Chemistry Letters

    Chemistry Letters 30 (2), 126-127, 2001-02-01

    Oxford University Press (OUP)

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