NEW ORGANOSOLS OF NICKEL SULFIDES, PALLADIUM SULFIDES, MANGANESE SULFIDE, AND MIXED METAL SULFIDES AND THEIR USE IN PREPARATION OF SEMICONDUCTING POLYMER-METAL SULFIDE COMPOSITES

Organosols of NiS, PdS, and MnS in N,N-dimethylformamide were prepared by reaction of the metal acetate with H2S. Organosols of mixed-metal sulfides (ZnxCd1-xS, HgxCd1-xS, HgxCu1-xS, CdxMn1-xS, HgxMn1-xS, HgxCd1-xS, and MnxZn1-xS) were similarly obtained by reaction of mixtures of the metal salts with H2S. The organosol of Zn0.5Cd0.5S contained particles with two particle size distributions centered at 6.5 nm and 29 nm, as revealed by Ar laser-scattering analysis. The metal sulfides are recovered by addition of Et2O to the organosols. ZnxCd1-xS thus obtained shows magnetic susceptibility in the range 0.5 x 10(-6)-2.3 x 10(-6) emu g-1 depending on the x value. Addition of polymers to the organosols affords semiconducting films of metal sulfide-polymer composites.