Photoinduced ground-state singlet biradical--novel insight into the photochromic compounds of biindenylidenediones.
The biindenylidenedione derivative (A) developed a biradical accompanied by the simultaneous photocolor development on UV or sunlight irradiation; the former of which showed antiferromagnetic behavior on account of the singlet ground state and a thermally accessible triplet state.
Xu
Lili
L
Department of Chemistry, Nankai University, Tianjin 300071, P.R. China.
Sugiyama
Teruki
T
Huang
Huaming
H
Song
Zhiji
Z
Meng
Jiben
J
Matsuura
Teruo
T