Topic
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: It is established that the combination of gold and alcohol is crucial to carbyne formation because carbon-hydrogen bonds can be cleaved with the help of gold catalysts under the favorable thermodynamic environment provided by laser ablation in liquid.
Abstract: Carbyne is the one-dimensional allotrope of carbon composed of sp-hybridized carbon atoms. Definitive evidence for carbyne has remained elusive despite its synthesis and preparation in the laboratory. Given the remarkable technological breakthroughs offered by other allotropes of carbon, including diamond, graphite, fullerenes, carbon nanotubes, and graphene, interest in carbyne and its unusual potential properties remains intense. We report the first synthesis of carbyne with finite length, which is clearly composed of alternating single bonds and triple bonds, using a novel process involving laser ablation in liquid. Spectroscopic analyses confirm that the product is the structure of sp hybridization with alternating carbon-carbon single bonds and triple bonds and capped by hydrogen. We observe purple-blue fluorescence emissions from the gap between the highest occupied molecular orbital and the lowest unoccupied molecular orbital of carbyne. Condensed-phase carbyne crystals have a hexagonal lattice and resemble the white crystalline powder produced by drying a carbyne solution. We also establish that the combination of gold and alcohol is crucial to carbyne formation because carbon-hydrogen bonds can be cleaved with the help of gold catalysts under the favorable thermodynamic environment provided by laser ablation in liquid and because the unique configuration of two carbon atoms in an alcohol molecule matches the elementary entity of carbyne. This laboratory synthesis of carbyne will enable the exploration of its properties and applications.
122 citations
TL;DR: Room temperature liquid C60 derivatives bearing a 2,4,6-trialkyloxyphenyl branch show a dramatic decrease in viscosity with an increase in the length of the alkyl chains, which makes them an extremely attractive novel carbon material for future applications in materials science.
Abstract: Room temperature liquid C60 derivatives bearing a 2,4,6-trialkyloxyphenyl branch show a dramatic decrease in viscosity with an increase in the length of the alkyl chains. This feature, when combined with electrochemical activities similar to those of pristine C60 and relatively high charge carrier mobility, makes them an extremely attractive novel carbon material for future applications in materials science.
122 citations
TL;DR: The structure of 20-atom carbon clusters has been studied using correlated ab initio calculations with large basis sets as discussed by the authors, which predicts a monocyclic, poly-acetylene structure to be the most stable from.
122 citations
TL;DR: Computations suggest that fusing many such cylinders could produce carbon nanotubes with electronic properties modulated by the periodic vacancy defects, and Sun et al. showcase the beginnings of a bottom-up strategy toward this end.
Abstract: Discrete graphitic carbon compounds serve as tunable models for the properties of extended macromolecular structures such as nanotubes. Here, we report synthesis and characterization of a cylindrical C304H264 molecule composed of 40 benzene (phenine) units mutually bonded at the 1, 3, and 5 positions. The concise nine-step synthesis featuring successive borylations and couplings proceeded with an average yield for each benzene-benzene bond formation of 91%. The molecular structure of the nanometer-sized cylinder with periodic vacancy defects was confirmed spectroscopically and crystallographically. The nanoporous nature of the compound further enabled inclusion of multiple fullerene guests. Computations suggest that fusing many such cylinders could produce carbon nanotubes with electronic properties modulated by the periodic vacancy defects.
122 citations
TL;DR: In this article, the interaction of amphetamine (AA) drug with the pristine, B, Al, Ga (group IIIA), Si, and Ge (IIV group) doped C60 fullerenes was investigated.
122 citations