Abstract
Third harmonic generation measurements of composite films of one-dimensional polynuclear platinum complexes with poly(vinyl alcohol) were performed. The third-order nonlinear susceptibility χ(3) of the tetranuclear complex was estimated. The χ(3) value of the composite film of octanuclear complex was obtained. This value is larger than that of tetranuclear complex. It indicates that the longer platinum chain leads to the enhancement of their third-order optical nonlinearity.