Concept

Ion-mobility spectrometry–mass spectrometry

Related publications (403)

Plate for matrix-assisted laser desorption ionization mass spectrometry for, e.g. analyzing peptide, has substrate that is covered with light sensitive matrix with light absorber, charge carrier, probe molecule and photo-sensitizer

Hubert Girault, Niels Erik Lion, Christophe Roussel, Liang Qiao

NOVELTY - The plate has electrically conductive substrate (1) that is covered with light sensitive matrix (2). The matrix comprises light absorber, charge carrier, probe molecule and photo-sensitizer (3) arranged to oxidize probe molecule by irradiation of ...

2008

Biphasic Electrospray Ionization for the Study of Interfacial Complexes

Hubert Girault, Manuel Alejandro Méndez Agudelo, Michel Prudent

Biphasic electrospray ionization (BESI) mass spectrometry is achieved by using a dual-channel microsprayer, where channels filled with different immiscible phases meet at the Taylor cone. Two types of interfacial complexation reactions have been studied: t ...

The Japan Society of Analytical Chemistry / The Japan Society for Analytical Chemistry2008

Peptide-Phospholipid Complex Formation at Liquid-Liquid Interfaces

Hubert Girault, Manuel Alejandro Méndez Agudelo, Michel Prudent, Bin Su

Two peptides known to interact with receptors embedded in cell membranes, angiotensin III (AngIII) and Leuenkephalin(LeuEnk), were studied electrochemically at the interface formed between two immiscible electrolyte solutions modified by an adsorbed monola ...

2008

Microfabricated Dual Sprayer for On-Line Mass Tagging of Phosphopeptides

Hubert Girault, Niels Erik Lion, Michel Prudent, Joël Stéphane Rossier

Phosphopeptides tagging reactions by dinuclear zinc(II) complexes (1,3-bis[bis(2-pyridylmethyl)amino]-propan- 2-olato dizinc(II)3+, called tag) were performed with a dual-channel microsprayer in electrospray ionization mass spectrometry. The reaction is fi ...

2008

New Metabolites in the Degradation of α- and γ-Hexachlorocyclohexane (HCH): Pentachlorocyclohexenes Are Hydroxylated to Cyclohexenols and Cyclohexenediols by the Haloalkane Dehalogenase LinB from Sphingobium indicum B90A

Christof Holliger, Thomas Geiger, Vishakha Raina

Technical hexachlorocyclohexane (HCH) and lindane are obsolete pesticides whose former production and use led to widespread contaminations posing serious and lasting health and environmental risks. Out of nine possible stereoisomers, α-, β-, γ-, and δ-HCH ...

American Chemical Society2008

A time-of-flight-Mott apparatus for soft x-ray spin resolved photoemission on solid samples

Luca Moreschini

We describe a new spectrometer for spin resolved photoemission from solids in the soft x-ray energy range. It is mounted on the ID08 beamline at the ESRF light source and consists of a time-of-flight (TOF) energy analyzer coupled to a retarding mini-Mott s ...

American Institute of Physics2008

Microfluidic enzymatic reactors for proteome research

Hubert Girault

The field of proteomics has emerged as a valuable analytical tool for elucidating cellular and biological systems at the molecular level. As there is an ever-growing demand for new highly automated, high-throughput, and sensitive analytical tools, a key ch ...

2008

On-line Electrogeneration of Copper-Peptide Complexes in Microspray Mass Spectrometry

Hubert Girault, Michel Prudent

The interaction of copper ions with peptides was investigated by electrospray mass spectrometry. Two electrospray micro-emitters were compared, the first one with a platinum electrode using a copper(II) electrolyte solution containing a peptide sample, and ...

2008

Direct Observation of Microscopic Solvation at the Surface of Clusters by Ultrafast Photoelectron Imaging

Majed Chergui, Alejandro Gonzalez Gonzalez

We report on microscopic observation of solvation by argon atoms of excited states of an ethylenic-like mol., TDMAE (tetrakis dimethylaminoethylene). Two exptl. methods were used: gas phase dynamics for the observation of the evolution through excited stat ...

2008

Electrospray ion beam deposition and mass spectrometry of nonvolatile molecules and nanomaterials

Stephan Rauschenbach

The vacuum deposition of complex functional molecules and nanoparticles by thermal sublimation is often hindered due to their extremely low vapor pressure. This especially impedes the application of ultrahigh vacuum (UHV) based analytical and surface modif ...

EPFL2008

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