Chemical modification of diamond surface with X–(C6H4)–COOH (X = F, Cl, Br, I) using benzoyl peroxide

The chemical reactivity of a hydrogenated diamond surface with X–(C6H4)–COOH (X = F, Cl, Br, I) when using benzoyl peroxide was investigated in this study. After the reaction processes the shapes of the IR spectra changed. It was confirmed from the XPS measurements that halogen atoms existed on the samples after the reaction process. The position of the IR peak at ca. 700 cm− 1 depended on the kind of halogen in X–(C6H4)–COOH. Moreover, the peak position depended on the kind of constitutional isomer, that is, ortho-, meta-, or para-. It was confirmed from the experimental results of this study that halogen-containing organic functional groups can be introduced onto a diamond surface.