Oleg Boyarkine

À propos
Confidentialité
Mentions légales

Graph Chatbot

Publications associées (73)

Method and apparatus for the analysis of molecules using mass spectrometry and optical spectroscopy

Oleg Boyarkine, Vladimir Kopysov

A method of analyzing molecules enabling chemical, structural and isomeric or conformational identification of the molecules, particularly in a stream from a chromatographic separation, comprising: generating ions from a sample of molecules to be analyzed; ...

2016

Colors for Molecular Masses: Fusion of Spectroscopy and Mass Spectrometry for Identification of Biomolecules

Oleg Boyarkine, Vladimir Kopysov

We present an approach that integrates ultraviolet (UV) photofragmentation spectroscopy of cold ions with high-resolution Orbitrap mass spectrometry (MS) and uses mathematical analysis of the recorded 2D data arrays for structural identification of biomole ...

Amer Chemical Soc2015

Dissociation threshold of H218O: Validating ab initio calculations by state-selective triple-resonance spectroscopy

Oleg Boyarkine

We employ state-selective triple-resonance vibrational overtone spectroscopy for a direct measurement of the lowest dissociation energy, Do, in the (H2O)-O-18 molecule. The measured value of 41 154.22 +/- 0.25 cm(-1) is in an excellent agreement with that, ...

Elsevier2015

Conformational Structures of a Decapeptide Validated by First Principles Calculations and Cold Ion Spectroscopy

Thomas Rizzo, Natalia Nagornova, Oleg Boyarkine, Vladimir Kopysov, Robert Benny Gerber

Calculated structures of the two most stable conformers of a protonated decapeptide gramicidin S in the gas phase have been validated by comparing the vibrational spectra, calculat- ed from first- principles and measured in a wide spectral range using infr ...

Wiley-V C H Verlag Gmbh2015

Cryogenic Methods for the Spectroscopy of Large, Biomolecular Ions

Thomas Rizzo, Oleg Boyarkine

Determining the conformation of biological molecules is key for understanding their function. The recent combination of mass spectrometry, cryogenic ion traps, and laser spectroscopy is providing new methods to interrogate individual conformations of pepti ...

Springer2015

Fragmentation mechanism of UV-excited peptides in the gas phase

Thomas Rizzo, Oleg Boyarkine, Michael Zachary Kamrath, Aleksandra Zabuga

We present evidence that following near-UV excitation, protonated tyrosine- or phenylalanine–containing peptides undergo intersystem crossing to produce a triplet species. This pathway competes with direct dissociation from the excited electronic state and ...

American Institute of Physics2014

Microhydration Effects on the Encapsulation of Potassium Ion by Dibenzo-18-Crown-6

Thomas Rizzo, Oleg Boyarkine, Yoshiya Inokuchi

We have measured electronic and conformer-specific vibrational spectra of hydrated dibenzo-18-crown-6 (DB18C6) complexes with potassium ion, K+center dot DB18C6 center dot(H2O)(n) (n = 1-5), in a cold, 22-pole ion trap. We also present for comparison spect ...

American Chemical Society2014

Accurate bond dissociation energy of water determined by triple-resonance vibrational spectroscopy and ab initio calculations

Thomas Rizzo, Oleg Boyarkine, Pavlo Maksyutenko, Oleg Aseev

Triple-resonance vibrational spectroscopy is used to determine the lowest dissociation energy, D0, for the water isotopologue HD16O as 41 239.7 ± 0.2 cm−1 and to improve D0 for H216O to 41 145.92 ± 0.12 cm−1. Ab initio calculations including systematic bas ...

Elsevier2013

Exploring the Mechanism of IR–UV Double-Resonance for Quantitative Spectroscopy of Protonated Polypeptides and Proteins

Thomas Rizzo, Natalia Nagornova, Oleg Boyarkine

Wiley-VCH Verlag GmbH2013

Laser Spectroscopic Study of Cold Host–Guest Complexes of Crown Ethers in the Gas Phase

Thomas Rizzo, Oleg Boyarkine, Yoshiya Inokuchi

A laser spectroscopic study on the structure and dynamics of cold host–guest inclusion complexes of crown ethers (CEs) with various neutral and ionic species in the gas phase is presented. The complexes with neutral guest species are formed by using supers ...

2013

Page 4 sur 8

Accurate bond dissociation energy of water determined by triple-resonance vibrational spectroscopy and ab initio calculations

Thomas Rizzo, Oleg Boyarkine, Pavlo Maksyutenko, Oleg Aseev

Elsevier2013