Room temperature organic magnets derived from sp3 functionalized graphene

• DOI: 10.1038/ncomms14525
• Publication Date: 2017-02-20T10:16:26Z
• Authors: Jiří Tuček; Kateřina Holá; Athanasios B. Bou...; Piotr Błoński; Aristides Bakandr...; Juri Ugolotti; Matúš Dubecký; František Karlický; Václav Ranc; Klára Čépe; Michal Otyepka; Radek Zbořil
• Keywords: Magnetism; Superexchange

Abstract Materials based on metallic elements that have d orbitals and exhibit room temperature magnetism been known for centuries applied in a huge range of technologies. Development carbon magnets containing exclusively sp is viewed as great challenge chemistry, physics, spintronics materials science. Here we describe series organic prepared by simple controllable route the substitution fluorine atoms fluorographene with hydroxyl groups. Depending chemical composition (an F/OH ratio) 3 coverage, these new graphene derivatives show antiferromagnetic ordering, which has never observed any -based materials. Such 2D undergo transition to ferromagnetic state at low temperatures, showing an extraordinarily high magnetic moment. The developed theoretical model addresses origin terms 2 -conjugated diradical motifs embedded matrix superexchange interactions via –OH functionalization.