Comment on room temperature colossal superparamagnetic order in aminoferrocene–graphene molecular magnets

A re-examination of recent claims of room temperature colossal superparamagnetic behaviour of a material based on graphene oxide (GO) modified by well-known aminoferrocene has been undertaken. The synthetic claims of the well-known and commercially available aminoferrocene do not bear scrutiny, neither from new data obtained nor from the data presented in the original paper. The density functional theory-derived model developed to describe the apparent magnetic properties of the material is based on an artefact that occurs through poor choice of the starting model for the GO.