期刊
JOURNAL OF PHYSICAL CHEMISTRY A
卷 111, 期 10, 页码 1808-1813出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp067355a
关键词
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The relative energies of several conformations of the tryptophol cation are determined by zero kinetic energy (ZEKE) photoelectron spectroscopy and photoionization efficiency measurements. Recently published high-resolution electronic spectroscopy on the neutral species determined the absolute configuration of the different conformers in the S-1 spectrum. These assignments are utilized in the photoelectron experiments by pumping through conformer specific S-1 resonances yielding ZEKE spectra of the specific, assigned conformations. The adiabatic ionization of one specific conformation is definitively determined, and two others are estimated. The photoelectron spectra, coupled with calculations, reveal that structural changes upon ionization are dominated by interactions of the hydroxyl group with the changes of electronic structure in the aromatic system.
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