Selective mono-facial modification of graphene oxide nanosheets in suspensionElectronic supplementary information (ESI) available: Characterization data and experimental procedures. See DOI: 10.1039/c5cc05596b

Graphene oxide (GO) is selectively functionalized on one face to prepare Janus platelets which are characterized by various spectroscopic and microscopic techniques. With this methodology, Janus GO platelets can be prepared without the use of a solid substrate and the two platelet faces can be orthogonally modified in a one-pot reaction. Graphene oxide (GO) is selectively functionalized on one face to prepare Janus platelets which are characterized by various spectroscopic and microscopic techniques.