Quasi-one-dimensional platinum compound/polymer composites

Abstract

Films of polymers comprising the quasi-one-dimensional compounds K2[Pt(CN)4]Br0.3, [Pt(NH3)4][PtCl4] (Magnus' green salt), or [Pt(NH2Oc)4][PtCl4] (Oc = octyl) were prepared from homogeneous solutions followed by solvent evaporation. Above a percolation threshold of ca. 8 - 10% v/v, the composites adopted the semiconductor behavior of K2[Pt(CN)4]Br0.3 or Magnus' green salt, respectively. In the case of Pt(NH2Oc)4][PtCl4], a network established in the gel state in organic solvents was retained in the composites. Upon orientation of the composites by drawing, dichroism of the materials comprising Magnus' green salt and polarized light emission with K2[Pt(CN)4]Br0.3 was observed.