Fullerene

About: Fullerene is a research topic. Over the lifetime, 12723 publications have been published within this topic receiving 359173 citations.

Structures of Silicon-Doped Carbon Clusters

Abstract: Gas phase ion mobility measurements have been used to examine the geometries of silicon-doped carbon cluster cations, CnSi+ (n = 3−69). The observed isomers resemble those found for pure carbon clusters: linear chains, monocyclic, bicyclic, and polycyclic rings, graphite sheets, and fullerenes. Generally, the silicon atom substitutes for a carbon atom and has only a minor effect on the structure. The linear chain and monocyclic ring isomers coexist for CnSi+ clusters over a wider range than for pure carbon cluster cations. The results provide the first conclusive experimental evidence that C2n-1Si+ fullerenes with an even number of atoms are closed-cage structures with the silicon atom networked into the cage. For C2nSi+ fullerenes with an odd number of atoms the silicon atom appears to be exohedral.

The first true inorganic fullerenes

Abstract: Boron nitride and materials of composition MX2, where M is molybdenum or tungsten and X is sulphur or selenium, can form fullerene-like structures such as nested polyhedra or nanotubes1,2,3. However, the analogy to the carbon fullerene family4 falls short because no small preferred structure akin to C60(ref. 5) has been found. We have discovered nano-octahedra of MoS2of discrete sizes in soots that we prepared by laser ablation of pressed MoS2targets. These nano-octahedra are much larger than C60structures, having edge lengths of about 4.0 and 5.0 nanometres, and may represent the first ‘inorganic fullerenes’.

X-ray crystal structure of an anti-Buckminsterfullerene antibody fab fragment: biomolecular recognition of C(60).

Abstract: We have prepared a monoclonal Buckminsterfullerene specific antibody and report the sequences of its light and heavy chains. We also show, by x-ray crystallographic analysis of the Fab fragment and by model building, that the fullerene binding site is formed by the interface of the antibody light and heavy chains. Shape-complementary clustering of hydrophobic amino acids, several of which participate in putative stacking interactions with fullerene, form the binding site. Moreover, an induced fit mechanism appears to participate in the fullerene binding process. Affinity of the antibody–fullerene complex is 22 nM as measured by competitive binding. These findings should be applicable not only to the use of antibodies to assay and direct potential fullerene-based drug design but could also lead to new methodologies for the production of fullerene derivatives and nanotubes as well.

Lecture Notes on Fullerene Chemistry: A Handbook for Chemists

Abstract: The structure and properties of fullerenes addition patterns hydrogenation reduction by electron addition, and reaction of fullerene radical anions with electrophiles nucleophilic addition, and reaction of fullerene anions with electrophiles radical reactions nucleophilic substitution of fullerenes - fullerenes as electrophiles cycloadditions oxidation and the formation of radical cations and cations inorganic and organometallic derivatives of fullerenes polymers, dendrimers, dimers, dumb-bells and related structures heterofullerenes the chemistry of incar-fullerene (endohedral fullerenes)

Two Dimensional Graphite Films on Metals and Their Intercalation

Abstract: Two-dimensional graphite films (2DGF) on solids are wonderful objects, real nature-made two-dimensional crystals. Formation on active metal surface of a 2DGF with extremely high adsorption, chemical and catalytic passivity leads to a number of staggering effects. The review is devoted to 2DGF on metals and their nature, structure, modes of formation and physico chemical properties. A nature of absorption bond between 2DGF and metal substrate is discussed in details. A special attention is paid to intercalation of 2DGF — a process when foreign atoms and even molecules (fullerenes C60 molecules) spontaneously penetrate between graphite film and metal substrate. Modes of intercalation are discussed and a mechanism of it, based on thermal movements of carbon atoms of a graphite layer, proposed earlier, is used for explanation of experimental data. A new, practically important effect-superefficient diffusion of alkaline atoms into transition metal bulk, covered by 2DGF, is reported.