Branced oligogermynes were prepared both by Wurtz coupling reactions of alkyl- and phenyl-trichlorogermanes with sodium metal and by the reaction of alkyltrichlorogermanes using of samarium(II) diiodide. Upon ultraviolet irradiation of oligo(phenylgermyne) in air, the germanium-germanium bond in an oligo(phenylgermyne) film changed into a digermoxane chain. The laser flash photolysis of the oligo(phenylgermyne) film showed the formation of a germyl radical as a reactive intermediate during photodegradation. The formation of germanium carbide (Ge-C) and germanium dioxide (GeO2) was observed upon a heat treatment of unirradiated and irradiated oligo(phenylgermyne) films, respectively. A relatively high-resolution GeC/GeO2 micropatterning was obtained by combining the photochemical and thermal properties of branced oligogermynes.
|Number of pages||6|
|Journal||Bulletin of the Chemical Society of Japan|
|Publication status||Published - 1996 Oct|
ASJC Scopus subject areas