Quantum chemical AM1 study of growth mechanisms of fullerenes: a facile C2 insertion technique

Article Abstract:

A vertex addition-deletion procedure has been developed to study the growth mechanisms of fullerenes. The method is used specifically in examining the creation and annihilation of a (7,5) ring pair along with its motion. The (7,5) ring pair results from the insertion of a C2 molecule into the cavity of a hexagonal belt with 10 hexagons. The insertion produces a honeycomb lattice and two hydrocarbons with one and two (7,5) pairs. Results indicate that a hydrocarbon with a single pair behaves in a transition-state manner. The production of a hydrocarbon with two (7,5) pairs is a normal process compared to the formation of the honeycomb lattice.

Composition, Hydrocarbons, Carbon allotropes

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Preparation and layer-by-layer self-assembly of silver nanoparticles capped by graphite oxide nanosheets

Article Abstract:

The preparation and physical characteristics of oblate silver particles with diameters of 100 angstroms and protected by graphite oxide (GO) sheets that are 5 angstroms thick have been studied. The layer-by-layer self-formation of ultrathin films made up of polyelectrolytes and Ag-GO nanoparticles have also been examined. Results indicated that there are four steps in generating Ag-GO nanoparticles starting with the reduction of Ag cations on the surface of GO sheets followed by nucleation of small Ag clusters at different sites. The Ag clusters grow while the GO sheets around the Ag particles are bent.

Thin films, Silver

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