Development of Ultraviolet-Ultraviolet Hole-burning Spectroscopy for Cold Gas Phase Ions

The Journal of Physical Chemistry Letters 5 巻 7 号 1236-1240 頁 2014-04-03 発行
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タイトル ( eng )
Development of Ultraviolet-Ultraviolet Hole-burning Spectroscopy for Cold Gas Phase Ions
作成者
Féraud Géraldine
Dedonder Claude
Jouvet Christophe
収録物名
The Journal of Physical Chemistry Letters
5
7
開始ページ 1236
終了ページ 1240
抄録
A new ultraviolet-ultraviolet hole-burning (UV-UV HB) spectroscopic scheme has been developed for cold gas phase ions in a quadrupole-ion-trap (QIT) connected with a time-of-flight (TOF) mass spectrometer. In this method, a pump UV laser generates a population hole for the ions trapped in the cold QIT and a second UV laser (probe) monitors the population hole for the ions extracted to the field free region of the TOF mass spectrometer. Here, the neutral fragments generated by the UV dissociation of the ions with the second laser are detected. This UV-UV HB spectroscopy was applied to protonated dibenzylamine and to protonated uracil. Protonated uracil exhibits two strong electronic transitions; one has a band origin at 31760 cm-1 and the other at 39000 cm-1. From the UV-UV HB measurement and quantum chemical calculations, the lower energy transition is assigned to the enol-keto tautomer and the higher energy one to the enol-enol tautomer.
著者キーワード
gas phase cold ion
ion traps
conformers
uracil
electronic spectroscopy
内容記述
This study was supported in part by the France-Japan Collaboration Program (SAKURA) France, the Japan Society for Promotion of Science and the ANR Research Grant (ESPEM- ANR2010BLANC040501).
NDC分類
化学 [ 430 ]
言語
英語
資源タイプ 学術雑誌論文
出版者
American Chemical Society
発行日 2014-04-03
権利情報
Copyright (c) 2014 American Chemical Society
This document is the Accepted Manuscript version of a Published Work that appeared in final form in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see https://doi.org/10.1021/jz500478w.
出版タイプ Author’s Original(十分な品質であるとして、著者から正式な査読に提出される版)
アクセス権 オープンアクセス
収録物識別子
[DOI] 10.1021/jz500478w
[ISSN] 1948-7185
[NCID] AA1260018X
[DOI] https://doi.org/10.1021/jz500478w