Abstract
We investigated the reactivity of the carbonyl group on a diamond surface. When the oxygenated surface of a diamond powder was treated with LiAlH 4 , the intensity of the peak assigned to the C=O bond in the IR spectrum decreased, while that of the peak assigned to the O-H bond increased. Reactivity of the C=O bonds on the oxygenated diamond surface depended on the amount of LiAlH4 and the reaction time. However, the peak assigned to the C=O group did not disappear completely. It was found that carbonyl groups on the diamond surface had a lower reactivity toward LiAlH 4 than those found in organic compounds. The oxygenated diamond surface could be controlled through organic chemistry.
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