288852-84-6Relevant articles and documents
Metal-ion stabilization of photoinduced open colored isomer in crowned spirobenzothiapyran
Tanaka, Mutsuo,Kamada, Kenji,Ando, Hisanori,Kitagaki, Takashi,Shibutani, Yasuhiko,Yajima, Setsuko,Sakamoto, Hidefumi,Kimura, Keiichi
, p. 1453 - 1454 (1999)
A spirobenzothiapyran derivative bearing a monoaza-12-crown-4 moiety affords significant thermal stability enhancement in the UV light induced colored merocyanine form of its photochromic moiety by metal-ion complexation of its crown ether moiety, although the complexation hardly induces the isomerization without photoirradiation.