▎ 摘　　要

Tailoring the surface properties of graphene oxide by the grafting of heteroatom-based functionalities is mandatory for the applicative purpose. In this context, here, we investigate the grafting of sulphur functionalized graphene oxide surface (GO-XSH) via a plasma-based method. The impact of the treatment on the chemical composition and the morphology of GO-XSH was evaluated combining microscopic (atomic force microscopy) and spectroscopic techniques (X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy). Optimized experimental conditions have been identified, considering Ar/H2S gas mixture, for an efficient grafting of -SH groups on the GO surface. This is explained by the creation of defects by bombarding ions during the treatment, followed by subsequent chemisorption of sulphur-based radicals produced in the plasma. The whole set of our results demonstrates the attractiveness of our strategy for tuning the surface properties of GO of interest for biological applications.