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Journal ArticleDOI

C120On from C60Br24

26 Jan 2001-Chemical Physics Letters (North-Holland)-Vol. 333, Iss: 6, pp 515-521
TL;DR: In this paper, a microcrystalline mixture of fullerene dimer oxides (C120On; na 1, 2, 3,..) was extracted from decomposed C60Br24.
About: This article is published in Chemical Physics Letters.The article was published on 2001-01-26. It has received 10 citations till now. The article focuses on the topics: Dimer & Cycloaddition.
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Journal ArticleDOI
TL;DR: The FTIR vibrational spectroscopy is presented, without claiming to cover entire field, for the characterization of diamond, amorphous carbon, graphite, graphene, carbon nanotubes, fullerene and carbon quantum dots.
Abstract: Fourier transform Infrared (FTIR) spectroscopy is a versatile technique for the characterization of materials belonging to the carbon family. Based on the interaction of the IR radiation with matter this technique may be used for the identification and characterization of chemical structures. Most important features of this method are: non-destructive, real-time measurement and relatively easy to use. Carbon basis for all living systems has found numerous industrial applications from carbon coatings (i.e. amorphous and nanocrystalline carbon films: diamond-like carbon (DLC) films) to nanostructured materials (fullerenes, nanotubes, graphene) and carbon materials at nanoscale or carbon dots (CDots). In this paper, we present the FTIR vibrational spectroscopy for the characterization of diamond, amorphous carbon, graphite, graphene, carbon nanotubes (CNTs), fullerene and carbon quantum dots (CQDs), without claiming to cover entire field.

660 citations


Cites background from "C120On from C60Br24"

  • ...…674 – C60 and C70 coexist, C70 Alves et al., 2006; Bethune et al., 1991 669 Hg(3) and Hg(4) C120On dimer oxide, Hg(3) and Hg(4) vibrational modes of C60 Resmi et al., 2001 667 b2u C20 (D2h) Zhang et al., 2007 651 au C20 (D2h) Zhang et al., 2007 650 b2u C20 (D2h) Zhang et al., 2007 645–630 e1 ’…...

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  • ...…b2g C20 (D2h) Zhang et al., 2007 733 b1u C20 (D2h) Zhang et al., 2007 727 Hg(3) and Hg(4) C120On dimer oxide, Hg(3) and Hg(4) vibrational modes of C60 Resmi et al., 2001 725–720 a2 ’ C70 Iglesias-Groth et al., 2011; Meilunas et al., 1991; Menon et al., 1996 723 b3g C20 (D2h) Zhang et al., 2007 721…...

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  • ...H) C60 modified in plasma, confirm an aromatic structure Vijayalakshmi1 et al., 2014 847 Hg(3) and Hg(4 C120On dimer oxide, Hg(3) and Hg(4) vibrational modes of C60 Resmi et al., 2001 823 d (=C–...

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  • ...C20, finger print for bow-ti isomer Zamani et al., 2014 805 Hg(3) and Hg(4) C120On dimer oxide, Hg(3) and Hg(4) vibrational modes of C60 Resmi et al., 2001 805 ds (N–...

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  • ...…1996 644 Hg(3) and Hg(4) C120On dimer oxide, Hg(3) and Hg(4) vibrational modes of C60 Resmi et al., 2001 642 – C60 and C70 coexist, C70 Alves et al., 2006; Bethune et al., 1991 625 au C20 (D2h) Zhang et al., 2007 604 F1u(2) C120On dimer oxide, F1u(2) vibrational modes Resmi et al., 2001 603 (C–...

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Journal ArticleDOI
TL;DR: A literature survey is presented in this article summarizing the preparation, purification, characterization, and stabilities of fullerene oxides and ozonides, and data on 13C NMR spectra, thermal dissociation reaction products and kinetics, and photolysis products of these compounds are compiled and presented in tabular form.

42 citations

Journal ArticleDOI
TL;DR: In this article, a vaporization source equipped with a corona discharge ionizer in the presence of a trace amount of oxygen was used to produce oxygenated fullerenes anions.

11 citations

Journal ArticleDOI
TL;DR: It was found that the clusters are reinforced; that is, they are not broken by electron beams any more, and the actual mechanism of the reinforcement of the clusters has not yet been clearly understood and therefore is an open question.
Abstract: We carry out two experiments: (1) the formation of clusters composed of C60 molecules via self-assembly and (2) the reinforcement of the clusters. Firstly, clusters such as fibres and helices composed of C60 molecules are produced via self-assembly in supercritical carbon dioxide. However, C60 molecules are so weakly bonded to each other in the clusters that the clusters are broken by the irradiation of electron beams during scanning electron microscope observation. Secondly, UV photons are irradiated inside a chamber in which air is filled at 1 atm and the above clusters are placed, and it was found that the clusters are reinforced; that is, they are not broken by electron beams any more. C60 molecules located at the surface of the clusters are oxidised, i.e. C60On molecules, where n = 1, 2, 3 and 4, are produced according to time-of-flight mass spectroscopy. It is supposed that oxidised C60 molecules at the surface of the clusters may have an important role for the reinforcement, but the actual mechanism of the reinforcement of the clusters has not yet been clearly understood and therefore is an open question.

5 citations

Journal ArticleDOI
TL;DR: In this article , the thermal decomposition of C60Br24•2Br2 has been studied by Differential Scanning Calorimetry (DSC) at different heating rates.
Abstract: The thermal decomposition of C60Br24•2Br2 has been studied by Differential Scanning Calorimetry (DSC) at different heating rates. Depending from the heating rate, the thermal decomposition peak occurred between 163 °C and 201 °C with an activation energy E# = 108.6 kJ/mol. The decomposition products are C60 (assessed by FT-IR) and molecular bromine. From the decomposition enthalpy measured by DSC, the enthalpy of formation ΔHf°(C60Br24(c)) = 2114 ± 34 kJ/mol has been determined. By group increment or group additivity method ΔHf°(C60Br24 (g)) = 2184 kJ/mol has been calculated, in fair agreement with the experimental value. Furthermore, through the group increment method ΔGf°(C60Br24 (g)) = 3264 kJ/mol has been estimated. The enthalpy of the C-Br bond in the C60Br24 molecule was found comprised between 108 and 120 kJ/mol.

2 citations