Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry

	Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry
	Nie Long-Hui 1; Wang Wei-Guo 2
刊名	CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
	2017-06-01
卷号	45 期号:6 页码:851-855
关键词	Surface-assisted laser desorption/ionization mass spectrometry Polycyclic aromatic Ionization pi-pi bond interaction Spatial barrier
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.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Analytical
研究领域[WOS]	Chemistry
关键词[WOS]	MOLECULAR-WEIGHT DISTRIBUTIONS ; DESORPTION IONIZATION ; PETROLEUM ASPHALTENES ; SALDI-MS ; TOF-MS ; TIO2 NANOCRYSTALS ; NANOPARTICLES ; MATRIX ; SIZE
收录类别	SCI
语种	英语
WOS记录号	WOS:000406222800005
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/151908]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
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
推荐引用方式 GB/T 7714	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.
APA	Nie Long-Hui,&Wang Wei-Guo.(2017).Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry.CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,45(6),851-855.
MLA	Nie Long-Hui,et al."Investigation on Production of Cluster Ions Using Surface-Assisted Laser Desorption/Ionization Mass Spectrometry".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 45.6(2017):851-855.