- 作者: Mafune, Fumitaka ; Kohno, Jun-Ya ; Kondow, Tamotsu
- 作者服務機構: Dept. of Chemistry, School of Science, The Univ. of Tokyo, Bunkyo-ku, Tokyo, Japan
- 中文摘要: A simple technique of preparing a continuous laminar liquid flow in vacuum (liquid beam) was developed and combined with multiphoton ionization and a time-of-flight mass spectrometer. This technique was applied to the study on resonance photoionization of an aniline (AN)-propanol(PrOH) solution (0.1-0.3M). Binary cluster ions of aniline and propanol, AN/sup +/(PrOH)/sub n/ (n.gtoreq.1), and protonated propanol cluster ions, H/sup +/(PrOH)/sub n/(n.gtoreq.1), were observed as product ions in the gas phase. The relative intensities of AN/sup +/PrOH and those of H/sup +/(PrOH)/sub 2/ were measured as functions of the excitation laser power and the concentration of aniline in the propanol solution. The dependences of the ion intensities on the laser power and the AN concentration are explained in terms of a Coulomb ejection model, where the ions are ejected from the surface by Coulomb repulsion exerted from neighboring ions. It is also concluded that H/sup +/(PrOH)/sub n / is produced by a proton transfer reaction from an aniline ion to solvent molecules in the solution.
- 英文摘要: --
- 中文關鍵字: Multiphoton Ionization; Time-Of-Flight Mass Spectrometer; Aniline; Propanol; Coulomb Ejection Model
- 英文關鍵字: 多光子離子化;時間飛行質譜儀;苯胺;丙醇;哥倫布噴出模式