HALOGENATION AND BUTYLATION OF DIAMOND SURFACES BY REACTIONS IN ORGANIC-SOLVENTS

Hydrogenated diamond powder was chlorinated by treatment with sulfuryl chloride in chloroform at 50 degrees C. The disappearance of C-H stre tching peaks showed that most of the hydrogen was substituted by chlor ine in this procedure. The chlorinated diamond was then reacted with b utyllithium dissolved in tetrahydrofuran at 30 degrees C. Butyl groups incorporated onto the diamond surface were decomposed by flash pyroly sis at temperatures between 255 and 1040 degrees C, and all organic fr agments were recovered. The fraction of butylated surface carbons to t otal surface carbons was calculated to be 0.055. (C) 1998 Elsevier Sci ence S.A.