Journal
JOURNAL OF MOLECULAR MODELING
Volume 18, Issue 8, Pages 3535-3540Publisher
SPRINGER
DOI: 10.1007/s00894-012-1366-7
Keywords
Ab initio; Adsorption; Doping; M05; Nanostructure
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Using first principle calculations, we investigated cation-pi interactions between alkali cations (Li+, Na+, and K+) and pristine C-24 or doped fullerenes of BC23, and NC23. The most suitable adsorption site is found to be atop the center of a six-membered ring of the exterior surface of C-24 molecule. Interaction energies of these cations decreased in the order: Li+ > Na+ > K+, with values of -31.82, -22.36, and -15.68 kcal mol(-1), respectively. It was shown that the interaction energies are increased and decreased by impurity doping of B and N atoms in adjacent wall of adsorption site, depending on electron donating or receptivity of the doping atoms.
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