Importance

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Abstract

An improved method for the fluorination of a diamond surfaces comprises condensing a layer of perfluorinated alkyl iodides consisting of C.sub.n F.sub.2n+1 I (where n is a positive integer from 1 to 13) on the diamond surface, producing perfluorinated alkyl free radicals by photodecomposing C--I bonds of said perfluorinated alkyl iodides on the diamond surface, reacting the diamond surface with photochemically produced perfluorinated alkyl radicals thereby anchoring photochemically induced photofragments of the perfluorinated alkyl iodides to the diamond surface forming a perfluorinated alkyl layer, and decomposing the perfluorinated alkyl layer on the diamond surface to cause the fluorination of the diamond surface by atomic F. The method achieves greater than one fluorine atom per surface carbon atom chemisorbed on the diamond using C.sub.4 F.sub.9 I. A fluorinated diamond made by the above method is also disclosed wherein a fluorinating perfluoroalkyl iodide, C.sub.n F.sub.2n+1 I, is selected from the group consisting of n=1 to 5. In one case, the fluorinating perfluoroalkyl iodide is C.sub.4 F.sub.9 I. In another case, it is CF.sub.3 I.

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First Claim