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  • 1
    Electronic Resource
    Electronic Resource
    Formation of C119 by thermal decomposition of C60O (1995)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 102 (1995), S. 540-543 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Laser desorption mass spectra of thin films of pure C60O were recorded in a range of equilibrium sample temperatures from 300 to 1100 K. On heating of the sample above 650 K a new peak corresponding to C−119 is detected in the anion mass spectrum which persists even after the sample is cooled to 300 K. Possible solid state reactions leading to the formation of C119 are discussed based on the mass spectrometric observations as well as temperature programmed decomposition measurements which were carried out for C60 and C60O samples. The results are discussed in connection with recently reported polymerization reactions of fullerene materials. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.469432
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Enhanced coalescence upon laser desorption of fullerene oxides (1994)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 101 (1994), S. 3243-3249 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: C60Ox, x=1–3 were prepared by exposing C60 solutions to ozone. After high performance liquid chromatography purification, these materials were studied by laser desorption time of flight mass spectroscopy. These mass spectra suggest that fullerene oxides undergo laser desorption induced coalescence more efficiently than pure C60. A correlation between the fragmentation of the desorbed parent species and the observed coalescence products both in yield and distribution suggests that efficient gas phase coalescence involves at least one reactive species, such as C58, produced by fragmentation of the desorbed fullerenes or fullerene derivatives.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.467571
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    A high resolution dual mass gate for ion separation in laser desorption/ionization time of flight mass spectrometry (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 1661-1664 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A dual mass gate is described which allows for high resolution separation of ions under realistic laser desorption/ionization and matrix assisted laser desorption/ionization time of flight mass spectrometry conditions at 10 kV kinetic energy. The device consists of two interleaved comb units sequentially positioned in the ion beam path. This allows significant improvement in resolution relative to one unit by separation of "low pass" and "high pass" functions. Principal limits as given by mechanical dimensions of the device and electrical properties of the switches are also discussed. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148823
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    Paper (German National Licenses)
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