Advances in Carbon Nanomaterials: Science and Applications by Nikos Tagmatarchis

By Nikos Tagmatarchis

This ebook covers the nomenclature and modeling of carbon nanomaterials, contains examples of surfaces and skinny motion pictures of fullerenes, and examines the morphology and constitution of carbon nanotubes and the characterization of peapod fabrics as a result of transmission electron microscopy. It additionally provides electro-optical homes and self-assembly and enrichment in carbon nanotubes, via suggestions for the chemical functionalization of carbon nanohorns and endohedral metallofullerenes. ultimately, the purposes of endohedral metallofullerenes in quantum computing and of functionalized carbon nanotubes in drugs finish this attention-grabbing evaluate of the field.

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Radial growth of these closed nanocone aggregates can occur either with86 or without79 a metallic catalytic particle at the cluster core. This typically determines whether the resultant structure is of the durian type (metal particle present) or dahlia type (no metal present), respectively (see Fig. 13). 87 For example, it is known that the tip can be easily opened by mild acid etching. For more details of the chemistry of carbon nanocones, see Chapter 6 by Nikos Tagmatarchis. 89 01-Tagmatarchis-ch01 March 28, 2012 10:3 PSP Book - 9in x 6in 01-Tagmatarchis-ch01 “Bamboo” Nanotubes Nanocones have been suggested as a cheaper and more easily produced alternative to carbon nanotubes for those applications which require high surfaces areas, since while they have similar surface areas, nanocones require lower growth temperatures (typically room temperature) and no catalyst.

145 The next fullerene able to fulfill the isolated pentagon rule after C60 is C70 . ) to rounded cages and eventually faceted146 polygonal structures. 084 A˚ 149 ). 19. (a) Ball-and-stick image of C60 Buckminsterfullerene and (b) a Schlegel 2D projection of the same molecule (often used to show bond chemistry), with standard atom numbering as adopted by IUPAC. 149 also many fullerene-based ionic crystals such as K3 C60 , often studied for superconducting behavior. 1 Fullerene Synthesis The use of a focused pulsed laser of ∼30 mJ onto a graphite target in a He atmosphere was the pioneer technique for the first synthesis of fullerenes.

163 Fullerenes polymerization can result in a range of different structures such as chains, 2D sheets, or three-dimensional (3D) solid forms. Interfullerene bonding occurs either via [2+2] cycloaddition between hexagon–hexagon bonds on neighboring cages, or single covalent bonds (Fig. 12 Onions Onions are a family closed mulƟ-shell cage molecules exclusively made of carbon. 20. Interfullerene C-C bonding in polymeric fullerides. (a) [2+2] cycloaddition in AC60 , (b) single C-C covalent bonds in Na2 RbC60 , (c) mixed bonding in Li4 C60 , reproduced from reference [156].

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