U. Verkerk

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Fragmentations of protonated cyclic-glycylglycine and cyclic-alanylalanine

J. Oomens, K. Siu, A. C. Hopkinson, 2012 .

Binding energies of the silver ion to alcohols and amides: a theoretical and experimental study.

V. Romanov, K. Siu, C. Siu, 2008, The journal of physical chemistry. A.

Features of the ESI mechanism that affect the observation of multiply charged noncovalent protein complexes and the determination of the association constant by the titration method

P. Kebarle, M. Peschke, U. Verkerk, 2004, Journal of the American Society for Mass Spectrometry.

Current Electrospray Mass Spectrometry: An Overview. Part B. Analyte Charging

U. Verkerk, 2014 .

Metal ion complexes with HisGly: comparison with PhePhe and PheGly.

G. Berden, J. Oomens, K. Siu, 2013, The journal of physical chemistry. A.

Ion-Ion and ion-molecule reactions at the surface of proteins produced by nanospray. Information on the number of acidic residues and control of the number of ionized acidic and basic residues

P. Kebarle, U. Verkerk, 2005, Journal of the American Society for Mass Spectrometry.

Ultraviolet photodissociation of protonated pharmaceuticals in a pressurized linear quadrupole ion trap.

A. Loboda, K. Siu, U. Verkerk, 2010, Rapid communications in mass spectrometry : RCM.

Performance and Attributes of Liquid Chromatography–Mass Spectrometry with Targeted Charge Separation in Quantitative Analysis of Therapeutic Peptides

J. Campbell, K. Siu, U. Verkerk, 2011, Journal of the American Society for Mass Spectrometry.

Effect of buffer cations and of H3O+ on the charge states of native proteins. Significance to determinations of stability constants of protein complexes.

P. Kebarle, M. Peschke, U. Verkerk, 2003, Journal of mass spectrometry : JMS.

Structure of the observable histidine radical cation in the gas phase: a captodative alpha-radical ion.

J. Oomens, Yuyong Ke, K. Siu, 2008, Angewandte Chemie.

Differential ion mobility separation of isomers for threshold collision-induced dissociation measurements

V. Romanov, K. Siu, A. C. Hopkinson, 2013 .

Hydration energies in the gas phase of select (MX)mM+ ions, where M+ = Na+, K+, Rb+, Cs+, NH4+ and X- = F-, Cl-, Br-, I-, NO2-, NO3-. Observed magic numbers of (MX)mM+ ions and their possible significance.

P. Kebarle, A. Blades, M. Peschke, 2004, Journal of the American Chemical Society.

Electrospray: from ions in solution to ions in the gas phase, what we know now.

P. Kebarle, Paul Kebarle, Udo H Verkerk, 2009, Mass spectrometry reviews.

Current Electrospray Mass Spectrometry: an Overview. Part A. Analyte Atomization

U. Verkerk, 2014 .

Coordination chemistry of the tetrakis(2- hydroxyphenyl)ethene support mimic : Polymetallic magnesium, aluminum, and titanium derivatives

R. McDonald, J. Stryker, U. Verkerk, 2005 .

Structures of the a2 ions of Ala-Ala-Ala and Phe-Phe-Phe

Q. Hao, J. Oomens, K. Siu, 2012 .

Development of Durable K+-Selective Chemically Modified Field Effect Transistors with Functionalized Polysiloxane Membranes

Zbigniew Brzozka, David N. Reinhoudt, Johannes F.J. Engbersen, 1994 .

Structure and Reactivity of the Distonic and Aromatic Radical Cations of Tryptophan

J. Oomens, Andrii Piatkivskyi, V. Ryzhov, 2013, Journal of The American Society for Mass Spectrometry.

Collision-induced dissociation of protonated fentanyl: A DFT study

V. Romanov, Stefan R Lukow, A. C. Hopkinson, 2021 .

Infrared multiple-photon dissociation spectroscopy of tripositive ions: lanthanum-tryptophan complexes.

J. Oomens, K. Siu, A. C. Hopkinson, 2012, Inorganic chemistry.

Gas-phase fragmentation of protonated benzodiazepines.

G. Ragno, K. Siu, A. C. Hopkinson, 2007, Rapid communications in mass spectrometry : RCM.

Threshold collision-induced dissociation measurements using a ring ion guide as the collision cell in a triple-quadrupole mass spectrometer.

V. Romanov, K. Siu, C. Siu, 2009, Analytical chemistry.

Structures of an* Ions Derived from Protonated Pentaglycine and Pentaalanine: Results from IRMPD Spectroscopy and DFT Calculations

J. Oomens, K. Siu, A. C. Hopkinson, 2013, Journal of The American Society for Mass Spectrometry.

a2 Ion Derived from Triglycine: An N1-Protonated 4-Imidazolidinone

J. Oomens, K. Siu, C. Siu, 2010 .

Conformation switching in gas-phase complexes of histidine with alkaline earth ions.

J. Oomens, K. Siu, C. Siu, 2009, The journal of physical chemistry. B.

Multi-ion sensing device for horticultural application based upon chemical modification and special packaging of ISFETs

D. Reinhoudt, A. V. Wingerden, H. Vlekkert, 1992 .

Structure of the [M + H - H2O]+ ion from tetraglycine: a revisit by means of density functional theory and isotope labeling.

J. Oomens, M. V. van Stipdonk, K. Siu, 2011, The journal of physical chemistry. A.

On the Mechanism of Electrospray Ionization Mass Spectrometry (ESIMS)

P. Kebarle, U. Verkerk, 2012 .

Prediction of the Charge States of Folded Proteins in Electrospray Ionization

P. Kebarle, M. Peschke, Paul Kebarle, 2004, European journal of mass spectrometry.

Rates of Proton Transfer from Carboxylic Acids to Dianions, CO2(CH2)pCO22-, and Their Significance to Observed Negative Charge States of Proteins in the Gas Phase†

P. Kebarle, A. Blades, M. Peschke, 2002 .

Stable gas-phase radical cations of dimeric tryptophan and tyrosine derivatives.

Yuyong Ke, K. Siu, A. C. Hopkinson, 2006, The journal of physical chemistry. B.

A Brief Overview of the Mechanisms Involved in Electrospray Mass Spectrometry

P. Kebarle, U. Verkerk, 2010 .

1 A Brief Overview of the Mechanisms Involved in Electrospray Mass Spectrometry

P. Kebarle, U. Verkerk, 2009 .

Semi-quinone formation from the catechol and ortho-quinone metabolites of the antitumor agent VP-16-213.

J. Broersen, H. Pinedo, J. de Vries, 1988, Free radical research communications.

Enhanced performance of potassium CHEMFETs by optimization of a polysiloxane membrane

Zbigniew Brzozka, David N. Reinhoudt, H. H. van den Vlekkert, 1994 .

Features of the ESI mechanism that affect the observation of multiply charged noncovalent protein complexes and the determination of the association constant by the titration method

P. Kebarle, M. Peschke, U. Verkerk, 2004, Journal of the American Society for Mass Spectrometry.

Development of chemically modified ISFETs as durable sensors for continuous flow measurements

D. Reinhoudt, J. Engbersen, H. Vlekkert, 1993 .