Room-temperature ferromagnetism in graphene has attracted considerable attention due to its potential application as spintronics. Theoretically, the magnetic moment of graphene can be generated by removing a single pz orbital from the π system, which introduces an unpaired electron into graphene motif for magnetic coupling. In this work, pz orbital of graphene is experimentally removed by cleaving the π bond of graphene using H3BO3 with the assistance of supercritical CO2 (SC CO2), which simultaneously introduces -B(OH)2 groups and unpaired electrons. As results, ferromagnetic coupling between unpaired electrons substantially enhances the magnetic properties of 2D graphene motif, leading to room-temperature ferromagnetism. Overall, this work successfully introduces unpaired electron into 2D graphene motif through π bond cleavage, which provides a novel approach for magnetic manipulation of 2D materials with conjugated structures.

This article is Open Access

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