Suppression of background emission from high vibrational levels in the excited state through vibronic mixing in supersonic jet spectrometry by using synchronous scan luminescence

Lin, Cheng Huang; Imasaka, Totaro; Ishibashi, Nobuhiko

doi:10.1021/ac00020a026

Cited by 3 publications

(1 citation statement)

References 14 publications

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“…This band broadening is a serious problem, especially in the application to a mixture sample, since it degrades analytical selectivity. Even in this case, synchronous scan luminescence spectrometry is capable of reducing the background and provides a limited number of sharp peaks in the spectrum [42]. This method has been applied to a sample of solvent-refined coal, and several components have been identified.…”

Section: A111 Polycyclic Aromatic Hydrocarbonsmentioning

confidence: 99%

Critical assessment: Use of supersonic jet spectrometry for complex mixture analysis (IUPAC Technical Report)

Imasaka¹,

Moore²,

Vo‐Dinh³

2003

Pure and Applied Chemistry

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Republication or reproduction of this report or its storage and/or dissemination by electronic means is permitted without theAbstract: When cooled to a temperature of a few K using supersonic jet expansion into a vacuum, a molecule exists in the lowest vibrational level of the ground electronic state and is isolated at collision-free conditions. The absorption or excitation/fluorescence spectrum is then greatly simplified, when transitions occur from this single vibrational level to a limited number of vibrational levels in the excited electronic state. This method, called supersonic jet spectrometry, is a powerful analytical technique because of its high selectivity, since the chemical species can be accurately identified and selectively quantified using the sharp spectral features even for large molecules. Supersonic jet spectrometry has distinct advantages over other low-temperature spectrometries, in that it can be combined with gas-phase separation and detection techniques such as chromatography or mass spectrometry. Therefore, this spectrometric technique can be used as a versatile analytical means, not only for basic research on pure substances, but also for practical trace analysis of chemical species in multicomponent samples (e.g., in biological monitoring or in environmental monitoring).

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Section: A111 Polycyclic Aromatic Hydrocarbonsmentioning

confidence: 99%