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- W2068178304 abstract "The formation of graphen-nanotube composites addresses a few basic problems. First, both partners are good donors and acceptors of electrons, which significantly complicates the intermolecular interaction between them leading to a two-well shape of the ground state energy term. The second problem concerns odd-electron character of the components. Similarly to high aromatics and fullerenes, much larger C-C distances provide a considerable weakening of odd electrons interaction in nanotubes and graphene that necessitates taking the configurational interaction of odd electrons into account. Avoiding a severe complication, the broken spin-symmetry approach makes the problem feasible. Moreover, unrestricted broken-symmetry Hartree-Fock approach possesses a unique sensitivity in revealing enhanced chemical activity of the species caused by their partial radicalization in terms of atomic chemical susceptibility. The chemical susceptibility profiles along the tube and across their body as well as over graphene sheets form the ground of computational synthesis of graphen-nanotube composites in due course of the relevant addition reactions and make it possible to select two main groups of the composites, conditionally called hammer and cutting-blade structures. The final product will depend on whether both components of the composition are freely accessible or one of them is fixed. Thus, in diluted solutions where the first requirement is met, one can expect the formation of the multi-addend cutting-blade composites. Oppositely, when either nanotubes or graphene sheets are fixed on some substrates, the hammer composites will be formed. A particular cradle composite is suggested for an individual graphene sheet to be fixed by a pair of nanotubes." @default.
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- W2068178304 date "2009-01-23" @default.
- W2068178304 modified "2023-09-27" @default.
- W2068178304 title "Graphene-carbon nanotube composites" @default.
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