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Fullerene
About: Fullerene is a research topic. Over the lifetime, 12723 publications have been published within this topic receiving 359173 citations.
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TL;DR: Images of how the fullerenes move during the dimerization process reveal the specific orientations in which two molecules interact, as well as how bond reorganization occurs after their initial contact.
Abstract: High-resolution transmission electron microscopy has proved useful for its ability to provide time-resolved images of small molecules and their movements. One of the next challenges in this area is to visualize chemical reactions by monitoring time-dependent changes in the atomic positions of reacting molecules. Such images may provide information that is not available with other experimental methods. Here we report a study on bimolecular reactions of fullerene and metallofullerene molecules inside carbon nanotubes as a function of electron dose. Images of how the fullerenes move during the dimerization process reveal the specific orientations in which two molecules interact, as well as how bond reorganization occurs after their initial contact. Studies on the concentration, specimen temperature, effect of catalyst and accelerating voltage indicate that the reactions can be imaged under a variety of conditions. Well-resolved images of small molecules and their motions can be obtained with high-resolution transmission electron microscopy. It has now been shown that this technique can also be used to visualize individual chemical reactions involving the dimerization of fullerenes and metallo-fullerenes trapped inside carbon nanotubes by monitoring how the positions of their atoms change over time.
118 citations
TL;DR: In this article, the existence of a negative curvature fullerene unit that possesses sp2 hybridization is proposed and a new class of structures may be formed that has topological properties similar to the normal fullerenes.
118 citations
118 citations
TL;DR: This arranagement identifies the fullerene–porphyrin interaction as a structure-defining element and the same motif is seen in a related ribbon structure having C70 intercalated into HgI2-linked H2TpyTP.
Abstract: Porphyrins and fullerenes are spontaneously attracted to each other. This supramolecular recognition element can be exploited to produce ordered arrays of interleaved porphyrins and fullerenes. C(60) x H(2)TpyP x Pb(NO(3))(2) x 1.5TCE (H(2)TpyP = tetra-4-pyridylporphyrin; TCE = 1,1,2,2-tetrachloroethane) crystallizes in the tetragonal P4/n space group and the structure has been solved to high resolution. The Pb(2+) ions connect the pyridylporphyrins in infinite sheets with an interlayer spacing of 12.1 A. The fullerenes are intercalated between these layers, acting as pillars. The 6:6 ring juncture bonds of C(60) are centered over the porphyrins, bringing the layers into strict tetragonal register. This arrangement identifies the fullerene-porphyrin interaction as a structure-defining element. The same motif is seen in a related ribbon structure having C(70) intercalated into HgI(2)-linked H(2)TpyTP. The supramolecular design principles involved in assembling these chromophores may have applications in materials science.
118 citations
TL;DR: C60[Cu26Cl26L2{Cp*Fe(η5-P5)}13(CH3CN)9] (L = H2O) represents a first example of a complete encapsulation of C60 itself by an inorganic fullerene-like system via molecular recognition of the five- and sixfold-symmetric structural motif of C 60.
Abstract: C60[Cu26Cl26L2{Cp*Fe(η5-P5)}13(CH3CN)9] (L = H2O) represents a first example of a complete encapsulation of C60 itself by an inorganic fullerene-like system via molecular recognition of the five- and sixfold-symmetric structural motif of C60. The product exhibits an inorganic cover consisting of 99 inorganic core atoms from pentaphosphaferrocene and Cu(I) chloride building blocks. This is the first instance of a hollow structure that completely encapsulates C60. The overall spherical molecule possesses an outer diameter of 2.3 nm and shows a remarkable electronic interaction between C60 and the encapsulating giant molecule.
118 citations