Analytical applications of supersonic jet spectroscopy

Amirav, Aviv; Even, U.; Jortner, Joshua

doi:10.1021/ac00248a003

Cited by 62 publications

(38 citation statements)

References 34 publications

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“…3) similar as found in the gas phase. 17 As to be expected, the first overtone of the same mode at 610 cm −1 shows an isotopic splitting with gaps of 6.8 cm −1 (cf. 2nd panel left column in Fig.…”

Section: Resultssupporting

confidence: 60%

“…The natural abundance ratio of the isotopes 37 Cl and 35 Cl amounts to 1:3 and thus the isotopomers ( 37 Cl, 37 Cl)-AN, ( 35 Cl, 37 Cl)-AN, ( 35 Cl, 35 Cl)-AN are expected at an abundance ratio of 1:6:9. 17 For the fine structure shown in Fig. 2(a), the saturation behavior, the intensity pattern, and the number of peaks clearly speak against a Cl isotope effect.…”

Section: Resultsmentioning

confidence: 87%

“…The spectroscopy of 9,10-DCA in the gas phase is well documented in the literature. [17][18][19][20][21][22][23][24] In particular, 9,10-DCA has been investigated in a supersonic jet not only by means of fluorescence excitation, but also via absorption spectroscopy. 20 By comparison of the intensity distribution obtained by the two spectroscopic methods, information on the fluorescence quantum yield and on the non-radiative decay mechanisms was obtained.…”

Section: Introductionmentioning

confidence: 99%

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Electronic spectroscopy of 9,10-dichloroanthracene inside helium droplets

Pentlehner

Slenczka

2013

The Journal of Chemical Physics

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The spectroscopy of molecules doped into superfluid helium droplets provides information on both, the dopant molecule and the helium environment. Electronic spectra of 9,10-dichloroanthracene in helium droplets are presented and compared with corresponding gas phase spectra to unravel the influence of the helium environment. The combined investigation of fluorescence excitation and dispersed emission provides information on dynamic processes in addition to energetic conditions. For vibronic states, the helium induced decay channels dominate over all intramolecular channels that contribute to the gas phase behavior. In addition to the triplet splitting caused by the Cl isotopes, a fine structure resolved for all transitions in the fluorescence excitation spectrum was found, which is the signature of microsolvation of this compound in helium droplets. This fine structure is identified as a single pure molecular transition accompanied by a sharply structured phonon wing. The corresponding fine structure measured for bare anthracene shows remarkable differences.

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Section: Resultssupporting

confidence: 60%

Section: Resultsmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

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Electronic spectroscopy of 9,10-dichloroanthracene inside helium droplets

Pentlehner

Slenczka

2013

The Journal of Chemical Physics

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“…The vibrational excitation, however, exhibits three nearly equidistant peaks, as shown in Fig. 6, which are located at 380.740 nm, 380.787 nm, 380.831 nm, respectively [27]. Thus, these isotopes can readily be differentiated based on their excitation spectrum.…”

confidence: 98%

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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“…At these temperatures, supersonic jet spec tra can be obtained. A typical carrier gas-to-solute mole ratios is on the order of 10^-10^ for large molecules (85)(86)(87) tigation are introduced into a crystal lattice of another substance and the study is carried out at a sufficiently low temperature, a condition is achieved in which, first of all, the interaction between the emitting molecules and surrounding medium is at a minimum and, secondly, the amount of vibrational energy of each molecule is small. With a suitable selection of the crystalline structure into which the molecule is intro duced, it is possible to obtain very sharp spectra of quite complex compounds (88)(89)(90)(91)(92).…”

Section: Low Temperature Luminescence Spectroscopymentioning

confidence: 99%

Analytical application of laser excited Shpol'skii spectroscopy: direct identification and quantitation of polynuclear aromatic compounds

Elsaid

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Elsaid, Abdelmonaim Elbaz, "Analytical application of laser excited Shpol'skii spectroscopy: direct identification and quantitation of polynuclear aromatic compounds " (1986 INFORMATION TO USERSThis reproduction was made from a copy of a manuscript sent to us for publication and microfilming. While the most advanced technology has been used to pho tograph and reproduce this manuscript, the quality of the reproduction is heavily dependent upon the quality of the material submitted. Pages in any manuscript may have indistinct print. In all cases the best available copy has been filmed.The following explanation of techniques is provided to help clarify notations which may appear on this reproduction.

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Analytical applications of supersonic jet spectroscopy

Cited by 62 publications

References 34 publications

Electronic spectroscopy of 9,10-dichloroanthracene inside helium droplets

Electronic spectroscopy of 9,10-dichloroanthracene inside helium droplets

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

Analytical application of laser excited Shpol'skii spectroscopy: direct identification and quantitation of polynuclear aromatic compounds

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