▎ 摘　　要

The article is dedicated to the comprehensive biocompatibility investigation of synthesised graphene oxide (GO) enriched with oxygen-containing functional groups (similar to 85%). GO was synthesised through a modified Hummers and Offeman's method and characterised using C-13 NMR, Raman, and IR spectroscopy, XRD, HRTEM, along with size dimensions and zeta-potentials in aqueous dispersions. Biocompatibility study included tests on haemo-compatibility (haemolysis, platelet aggregation, binding to human serum albumin and its esterase activity), antioxidant activity (2,2-diphenyl-1-picrylhydrazyl reaction, NO-radical uptake, Radachlorin photobleaching, photo-induced haemolysis), genotoxicity using DNA comet assay, as well as metabolic activity and proliferation of HEK293 cells.