Far-infrared spectra of the tryptamine A conformer by IR-UV ion gain spectroscopy

被引:14
作者
Schmitt, Michael [1 ]
Spiering, Frans [2 ]
Zhaunerchyk, Vitali [2 ,3 ]
Jongma, Rienk T. [2 ]
Jaeqx, Sander [2 ]
Rijs, Anouk M. [2 ]
van der Zande, Wim J. [2 ]
机构
[1] Heinrich Heine Univ, Inst Phys Chem, D-40225 Dusseldorf, Germany
[2] Radboud Univ Nijmegen, Inst Mol & Mat, Felix Lab, Toernooiveld 7c, NL-6525 ED Nijmegen, Netherlands
[3] Univ Gothenburg, Dept Phys, S-41296 Gothenburg, Sweden
基金
瑞典研究理事会;
关键词
DOUBLE-RESONANCE SPECTROSCOPY; ULTRAVIOLET DOUBLE-RESONANCE; OH STRETCHING VIBRATIONS; FRANCK-CONDON PRINCIPLE; HIGH-RESOLUTION LASER; SUPERSONIC JET; GAS-PHASE; ELECTRONIC SPECTROSCOPY; IDENTITY APPROXIMATION; VIBRONIC TRANSITIONS;
D O I
10.1039/c6cp02358d
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We present far infrared spectra of the conformer A of tryptamine in the 200 to 500 cm(-1) wavenumber range along with resonant photoionization spectra of the far-infrared excited conformer A of tryptamine. We show that single-far-infrared photon excited tryptamine has highly structured resonance enhanced multi-photon ionization spectra, revealing the mode composition of the S-1-state. Upon multiple-far-infrared photon absorption, the resonance enhanced multi-photon ionization spectrum broadens allowing ion gain spectroscopy to be performed. In the ion gain spectrum we detect the fundamental far-infrared modes but also combination and overtone bands with high efficiency. The implications to dip spectroscopy using a free electron laser compared to more conventional light sources are discussed.
引用
收藏
页码:32116 / 32124
页数:9
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