Thin Films from Metal-Metal Bonded Compounds and Solvated Metal Atoms

摘要

Metals such as Pd, Pt, Cu, Ag, In, Ge, Sn, and Pb were evaporated under vacuum and the vapors (atoms) co-condensed at 77 K with excess organic solvents. In this way solvated metal atoms were produced. Upon warmup to room temperature metal atom agglomeration occurred in certain solvents to yield stable colloidal particles in solution. In many cases these were the first examples of non-aqueous colloids of these metals, and they are very novel in that they are free of contaminating reducing agents, halide ions, etc., and they are living colloids--by removal of solvent metallic films can be grown on various substrates under very mild conditions. Characterizing these colloidal particles and the films therefrom was an important part of this project. Metal-metal bonds; Alloys. (jes)