Reversible valence tautomerism induced by a single-shot laser pulse in a cobalt-iron Prussian blue analog.
Reversible valence tautomeric conversion induced by a single-shot laser pulse (8 ns duration) with a photon excitation energy of 2.38 eV has been observed in Na0.36Co1.32Fe(CN)(6).5.6H(2)O. A photoswitching process with accompanying magnetization and color changes was successfully achieved within the pulse duration at high temperature (above 200 K) in a thermal hysteresis loop. This unusual photoeffect originates from an optical charge transfer between Fe and Co atoms and evolves due to a cooperative interaction among the local photoexcited sites.
Kanagawa Academy of Science and Technology, KSP Building East 412, 3-2-1 Sakado, Takatsu-ku, Kawasaki-shi, Kanagawa 213-0012, Japan.
H W
HW
Liu
K
K
Matsuda
Z Z
ZZ
Gu
K
K
Takahashi
A L
AL
Cui
R
R
Nakajima
A
A
Fujishima
O
O
Sato