Detail of "1836-87-9"

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Identification and spectral properties of polycyclic aromatic hydrocarbons in carbonaceous soot produced by laser pyrolysis

All Rights Reserved. Identification and spectral properties of polycyclic aromatic hydrocarbons in carbonaceous soot produced by laser pyrolysis.Several substances are used for example 1836-87-9 which is its cas registry number. Jaeger, C.; Krasnokutski, S.; Staicu, A.; Huisken, F.; Mutschke, H.; Henning, Th.; Poppitz, W.; Voicu, I. (Institut fuer Festkoerperphysik, Jena D-07743, Germany). Astrophysical Journal, Supplement Series, 166(2), 557-566 (English) 2006 University of Chicago Press. CODEN: APJSA2. ISSN: 0067-0049. DOCUMENT TYPE: Journal CA Section: 73 (Optical, Electron, and Mass Spectroscopy and Other Related Properties) Carbon soot has been prepd. by laser-induced pyrolysis of a mixt. of ethylene (C2H4) and benzene (C6H6) vapor. The sol. part of the carbonaceous powder has been sepd. from its insol. counterpart by soxhlet extn. in toluene. Several techniques were applied to obtain information on the compn. of the ext. These included UV/visible and IR spectroscopy in solid and liq. phase, gas chromatog. combined with mass spectrometry, gas-phase laser spectroscopy in a supersonic jet, and matrix spectroscopy in helium droplets, the latter being also combined with mass spectrometry. The anal. revealed that the carbonaceous powder contained various polycyclic arom. hydrocarbons (PAHs). The highest concn. was found for the three-membered catacondensed PAHs, phenanthrene and anthracene. The results are discussed in view of the possible role of these mols. as interstellar dust components. .