E. V. Keuren, H. Matsuda, T. Kamata, T. Fukaya, and F. Mizukami
[Syn. Met., Vol.86, pp.2149-2150, 1997]

Various metal complexes have received attention for their large third-order nonlinear susceptibilities. Thin films of d⁸ transition metal complexes with dionedioxime have been shown to form stacks perpendicular to the molecular plane, with the central metal ions forming a quasi-one-dimensional chain of delocalized electrons. Results of wavelength dependent pump-probe measurements on these materials are presented, along with interpretation in terms of saturation of the lowest excitonic transition.