ABSTRACT
Spin peculiarities of electronic systems of open-shell sp2 nanocarbons reveal us yet another facet of the graphene spin chemistry associated with the species spatial topology that inevitably leads to their topochemical ability. Two cornerstones lie in the ground of the electronic properties of sp2 nanocarbons. The first concerns the open-shell nature of their atomic system and is intramolecular by nature. The second cornerstone is caused by extremely high donor and acceptor characteristics of the molecules and is strongly intermolecular interaction involved, which is smoothly transformed into peculiar intramolecular property of the species derivatives and composites. The topochemical character of the interaction between spatially extended species is well pronounced in the case of carbon nanotube+ graphene composites as well due to the extreme specificity of both components. Actually topochemical nature of fullerenes and graphene, once reflecting spin-based peculiarities of their electronic systems, strongly influences its chemical modification in general and hydrogenation in particular.
