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

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 47期

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

页码：32116 / 32124

页数：9

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[1] Photochemical selectivity in guanine-cytosine base-pair structures [J].