Chemical modification of carbon films with fluorine functionalities using dry process

Photolysis of perfluoroazooctane in the presence of carbon films, such as diamond-like carbon and diamond films, led to a covalent modification of their surface to introduce perfluorooctyl functional groups using dry process, confirmed by X-ray photoelectron and Raman spectroscopy. The carbon films modified with fluorine moieties showed a reduction of surface energy evaluated by contact angle to water and oil compared with pristine carbon films, and chemical stabilities due to the covalent modification.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Photochemical modification of diamond-like carbon and diamond films with perfluorooctyl functional groups using dry process. ► The modified carbon films with fluorine moieties show water and oil repellent properties. ► Chemical stabilities due to the covalent modification.