title: Unusually long-lived light-induced metastable state in a thermochromic copper(II) complex.
abstract: We report the first observation of a color change from red to purple for a thermochromic complex, [Cu(dieten)2](BF4)2 (dieten = N,N-diethylethylenediamine), which is induced by illuminating with UV light.
authors.affiliation: Kanagawa Academy of Science and Technology (KAST), KSP Bldg., East 412, 3-2-1 Sakado, Takatsu-ku, Kawasaki, Kanagawa 213-0012, Japan.
authors.forename: Kazuyuki
authors.initials: K
authors.lastname: Takahashi
authors.forename: Rie
authors.initials: R
authors.lastname: Nakajima
authors.forename: Zhong-ze
authors.initials: ZZ
authors.lastname: Gu
authors.forename: Hajime
authors.initials: H
authors.lastname: Yoshiki
authors.forename: Akira
authors.initials: A
authors.lastname: Fujishima
authors.forename: Osamu
authors.initials: O
authors.lastname: Sato