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题名: Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry
作者: Nie Long-Hui1;  Wang Wei-Guo2
关键词: Surface-assisted laser desorption/ionization mass spectrometry ;  Polycyclic aromatic ;  Ionization ;  pi-pi bond interaction ;  Spatial barrier
刊名: CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
发表日期: 2017-06-01
DOI: 10.1016/S1872-2040(17)61020-X
卷: 45, 期:6, 页:851-855
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: Surface-assisted laser desorption/ionization mass spectrometry (SALDI-MS) has become an indispensable tool in analysis of macromolecule and small molecule in solid and liquid samples. However, there were few studies focusing on the ionization mechanisms especially for the small molecules. In this work, the compounds of pyrene, coronene and rubrene with similar molecular structures were used to investigate the ionization mechanism via SALDI-MS. Additionally, the effect of laser power on product ions was also investigated. It was found that strong cluster ions peaks nM(+) (M = pyrene, coronene) were observed for pyrene and coronene, and daughter ions of coronene by loss of C2H2 were also observed. On the contrary, no cluster ion was obtained for rubrene, only daughter ions with the losses of nC(6)H(5) (n = 1, 2, 3) were acquired. Finally, the ionization mechanism was discussed. The formation of clusters of pyrene and coronene was attributed to the interaction of pi-pi bonds. For rubrene, the spatial barrier weakened the interaction of pi-pi bonds because the four phenyl groups were not on the same plane of skeleton structure, thus impeding the formation of cluster ions.
关键词[WOS]: MOLECULAR-WEIGHT DISTRIBUTIONS ;  DESORPTION IONIZATION ;  PETROLEUM ASPHALTENES ;  SALDI-MS ;  TOF-MS ;  TIO2 NANOCRYSTALS ;  NANOPARTICLES ;  MATRIX ;  SIZE
语种: 英语
WOS记录号: WOS:000406222800005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151908
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Hubei Univ Technol, Dept Mat & Chem Engn, Wuhan 430068, Hubei, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Key Lab Separat Sci Analyt Chem, Dalian 116023, Peoples R China

Recommended Citation:
Nie Long-Hui,Wang Wei-Guo. Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2017,45(6):851-855.
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