Gated Photochromic System of Diarylethene with a Photon-Working Key.
Upon visible light irradiation, a thermally reversible photochromic acid generator merocyanine dye gives a proton to the dimethylamino group of a non-photochromic diarylethene in acetonitrile. The protonation rendered the non-photochromic diarylethene photochromic. Thus, the thermally irreversible photochromic nature of the diarylethene is activated without any physical contact or addition of any compound but only by photoirradiation to the merocyanine dye.
Department of Advanced Materials Chemistry, Graduate School of Engineering, Yokohama National University , 79-5, Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
Sadegh
S
Mahvidi
Department of Advanced Materials Chemistry, Graduate School of Engineering, Yokohama National University , 79-5, Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
Sakiko
S
Takeuchi
Department of Advanced Materials Chemistry, Graduate School of Engineering, Yokohama National University , 79-5, Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
Sara
S
Kusumoto
Application Laboratory, Rigaku Corporation, 3-9-12, Matsubara-cho, Akishima, Tokyo 196-8666, Japan.
Hiroyasu
H
Sato
Department of Advanced Materials Chemistry, Graduate School of Engineering, Yokohama National University , 79-5, Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
Tetsuya
T
Nakagawa
Department of Advanced Materials Chemistry, Graduate School of Engineering, Yokohama National University , 79-5, Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
Yasushi
Y
Yokoyama