Laser-Desorption Supersonic Jet Spectroscopy of Phthalocyanines

1999 ◽  
Vol 194 (2) ◽  
pp. 163-170 ◽  
Author(s):  
Fiona L. Plows ◽  
Anita C. Jones
Keyword(s):  
Supersonic Jet ◽  
Laser Desorption

A New Liquid Droplet Laser Desorption Source Combined with Supersonic Jet Expansion: Application to Phenol and its Water Clusters

2014 ◽  
Vol 228 (4-5) ◽  
Author(s):  
Chayan Kanti Nandi ◽  
Hans-Dieter Barth ◽  
Bernhard Brutschy
Keyword(s):  
Gas Phase ◽  
Water Clusters ◽  
Liquid Droplet ◽  
Supersonic Jet ◽  
Laser Desorption ◽  
Laser Source ◽  
Published Data ◽  
Two Photon ◽  
Supersonic Jet Expansion ◽  
Phase Out

AbstractWe have developed a new laser source, for the spectroscopy of nonvolatile molecules in gas phase. It is based on a laser induced liquid bead ion desorption source (LILBID) combined with a supersonic beam. The cold molecules produced with this technique are sampled with Resonant Two Photon Ionization spectroscopy (R2PI) to measurement of the gas phase optical spectra. LILBID allows to bring nonvolatile molecule from liquid phase (out of a droplet) into gas phase, by means of multi photon ablation with IR photons exciting the vibrations of the solvent. Phenol and its different water clusters have been used as an example to demonstrate the method and to standardise the new experimental setup. The recorded R2PI spectral data of phenol monomer and its different water clusters obtained from this laser desorption technique are in very good agreement with the previously published data. This technique opens a new door for the measurement of molecules under microsolvation and potentially for

Gas phase ultraviolet and infrared spectroscopy on a partial peptide of β2-adrenoceptor SIVSF-NH2 by a laser desorption supersonic jet technique

2016 ◽  
Vol 18 (33) ◽  
pp. 23277-23284 ◽  
Author(s):  
Shun-ichi Ishiuchi ◽  
Kohei Yamada ◽  
Hikari Oba ◽  
Hiromichi Wako ◽  
Masaaki Fujii
Keyword(s):  
Infrared Spectroscopy ◽  
Binding Site ◽  
Gas Phase ◽  
Laser Spectroscopy ◽  
Supersonic Jet ◽  
Laser Desorption ◽  
Receptor Protein ◽  
Partial Sequence

Laser desorption supersonic jet laser spectroscopy has been applied to a penta-peptide, Ser-Ile-Val-Ser-Phe-NH2 (SIVSF-NH2), which is a partial sequence of a binding site in a β2-adrenaline receptor protein.

Resonance-Enhanced Multiphoton Ionization Jet Spectroscopy and Mass Spectrometry of Tyrosine-Containing Dipeptides Using a Pulsed Laser Desorption/Volatilization Method

1989 ◽  
Vol 43 (3) ◽  
pp. 543-549 ◽  
Author(s):  
Liang Li ◽  
David M. Lubman
Keyword(s):  
Mass Spectrometer ◽  
Laser Energy ◽  
Multiphoton Ionization ◽  
Supersonic Jet ◽  
Time Of Flight ◽  
Pulsed Laser ◽  
Laser Desorption ◽  
Spectral Features ◽  
Flight Mass Spectrometer ◽  
Jet Cooling

Pulsed laser desorption is used as a means of volatilizing thermally labile tyrosine-containing dipeptides for entrainment into a supersonic jet expansion. The jet expansion provides ultracold molecules whose spectral features are probed by resonant two-photon ionization (R2PI) spectroscopy in a time-of-flight mass spectrometer. In the dipeptides studied, spectral contours ∼1.5 nm FWHM are observed. Although no sharp spectral features were obtained, the shape of the contour is quite distinctive, and isomeric dipeptides can be distinguished. In addition, the ions produced are monitored in a time-of-flight mass spectrometer. It is shown that soft ionization can be obtained for each of these dipeptides by optimizing the jet cooling and exciting at the maximum intensity of the specific origin transition. By an increase in the laser energy, fragmentation is produced which can be used for structural identification of each of these dipeptides. Other factors that may affect these results, such as thermal decomposition, are also investigated.

Entropic effects make a more tightly folded conformer of a β-amino acid less stable: UV-UV hole burning and IR dip spectroscopy of l-β3-homotryptophan using a laser desorption supersonic jet technique

2018 ◽  
Vol 20 (30) ◽  
pp. 19979-19986 ◽  
Author(s):  
Woon Yong Sohn ◽  
Jeong Jin Kim ◽  
Myeongwon Jeon ◽  
Takuma Aoki ◽  
Shun-ichi Ishiuchi ◽  
...  
Keyword(s):  
Amino Acid ◽  
Gas Phase ◽  
Supersonic Jet ◽  
Laser Desorption ◽  
Hole Burning ◽  
Gas Phase Spectroscopy ◽  
Entropic Effects

Gas-phase spectroscopy of homotryptophan was done to understand conformations of β-peptides.

UV–UV hole burning and IR dip spectroscopy of homophenylalanine by laser desorption supersonic jet technique

2014 ◽  
Vol 445 ◽  
pp. 21-30 ◽  
Author(s):  
Woon Yong Sohn ◽  
Shun-ichi Ishiuchi ◽  
Pierre Çarçabal ◽  
Hikari Oba ◽  
Masaaki Fujii
Keyword(s):  
Supersonic Jet ◽  
Laser Desorption ◽  
Hole Burning

On-Line Concentration by Analyte Adsorption and Subsequent Laser Desorption in Supersonic Jet Spectrometry

2008 ◽  
Vol 80 (10) ◽  
pp. 3798-3802 ◽  
Author(s):  
Tomohiro Uchimura ◽  
Yuji Sakoda ◽  
Totaro Imasaka
Keyword(s):  
Supersonic Jet ◽  
Laser Desorption ◽  
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