| Vacuum ultraviolet photofragmentation of sarcosine: photoionization mass spectrometric and theoretical insights. | |
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MedLine Citation:
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PMID: 20178350 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Vacuum ultraviolet (VUV) photon-induced ionization and fragmentation of N-methyl glycine (sarcosine) were investigated with infrared laser desorption/tunable synchrotron VUV photoionization mass spectrometry (IR LD/VUV PIMS) and theoretical calculations. Fragment-controllable mass spectra of sarcosine were measured at various photon energies. By tuning the photon energy, the fragments at m/z 44, 45, 43, 42, 30, and 60 were gradually detected. The ionization energy of the precursor was obtained by measuring the photoionization efficiency spectrum. Possible formation pathways of the fragment ions at m/z 44 (CH(3)NHCH(2)(+)), 45 (CH(3)NH(2)CH(2)(+)), 43 (CH(2)NHCH(2)(+)), 42 (CH(2)NCH(2)(+)), 30 (CH(2)NH(2)(+)), and 60 (CH(2)COOH(2)(+)) were discussed in detail with the help of calculations at the G3B3 and B3LYP/6-31++G(d,p) levels. |
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Authors:
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Huijun Guo; Lidong Zhang; Liulin Deng; Liangyuan Jia; Yang Pan; Fei Qi |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The journal of physical chemistry. A Volume: 114 ISSN: 1520-5215 ISO Abbreviation: J Phys Chem A Publication Date: 2010 Mar |
Date Detail:
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Created Date: 2010-03-11 Completed Date: 2010-06-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9890903 Medline TA: J Phys Chem A Country: United States |
Other Details:
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Languages: eng Pagination: 3411-7 Citation Subset: IM |
Affiliation:
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National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230029, People's Republic of China. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Infrared Rays Mass Spectrometry* Models, Chemical* Models, Molecular Molecular Conformation Photochemical Processes* Sarcosine / chemistry* Spectrum Analysis Thermodynamics Ultraviolet Rays* |
| Chemical | |
Reg. No./Substance:
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107-97-1/Sarcosine |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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