Recent Publications

2.

Journal Article

Prabhu, G. R. D.; Götze, M.; Greis, K.; Torres-Boy, A. Y.; Safferthal, M.; Strzelecka, D.; Kirschbaum, C.; Deshpande, N. D.; Geue, N.; Meijer, G. et al.; Helden, G. v.; Pagel, K.: Cryogenic Gas-Phase Infrared Ion Spectroscopy of Ultraviolet-Induced Nucleotide Photoproducts. Analytical Chemistry 97 (48), pp. 26868 - 26876 (2025)

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3.

Journal Article

Geue, N.; Greis, K.; Omoregbee-Leichnitz, S.; Kirschbaum, C.; Chang, C.-W.; Meijer, G.; Helden, G. v.; Seeberger, P. H.; Pagel, K.: Influence of Levulinoyl Protecting Groups on Glycosylation Stereoselectivity and Glycosyl Cation Structure. European Journal of Organic Chemistry 28 (44), e202500732 (2025)

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4.

Journal Article

Geue, N.; Prabhu, G. R. D.; Renzi, E.; Walton-Doyle, C.; Meijer, G.; Helden, G. v.; Pagel, K.: Distinguishing Isomeric Caffeine Metabolites through Protomers and Tautomers Using Cryogenic Gas-Phase Infrared Spectroscopy. Analytical Chemistry 97 (39), pp. 21740 - 21747 (2025)

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5.

Journal Article

Schultz, M.; Banor, N. D.; Ober, K.; Torres-Boy, A. Y.; Fernando, M. T.; Wellalage, M. M.; Ellis, N. A.; Helden, G. v.; Thomas, D. A.: Examining the Effect of an Anion-Binding Reagent on the Structure of Deprotonated Leucine Enkephalin Using Cryogenic-Ion Infrared Action Spectroscopy. The Journal of Physical Chemistry A 129 (36), pp. 8303 - 8311 (2025)

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6.

Journal Article

Horlebein, J.; Moon, E.; Szekeres, G. P.; Helden, G. v.; Österlund, N.; Pagel, K.: Gas-phase purification enables structural studies of amyloid intermediates. Trends in Chemistry 7 (6), pp. 317 - 332 (2025)

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7.

Journal Article

Polewski, L.; Dymnikova, D.; Malicka, W.; Lettow, M.; Helden, G. v.; Teutloff, C.; Ballauff, M.; Taupitz, M.; Bittl, R.; Pagel, K.: Glycan-Induced Transchelation of Gadolinium from Magnetic Resonance Imaging Contrast Agent-Complexes. Analytical Chemistry 97 (22), pp. 11436 - 11442 (2025)

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8.

Journal Article

Torres-Boy, A. Y.; Han, J.; Prabhu, G. R. D.; Taccone, M. I.; Ghosh, A.; Buttkus, H.; Ober, K.; Meijer, G.; Asmis, K. R.; McCoy, A. B. et al.; Helden, G. v.: Cryogenic Vibrational Spectroscopy of the Deprotonated Dimer of Phosphoric Acid. The Journal of Physical Chemistry A 130 (5), pp. 993 - 1005 (2025)

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9.

Journal Article

Dahlmann, F.; Griesbach, C. E.; Torres-Boy, A. Y.; Helden, G. v.; Peczuh, M. W.; Pagel, K.; Greis, K.: Direct Experimental Characterization of a Sialyl Cation. Chemistry – A European Journal 31 (7), e202403724 (2025)

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10.

Journal Article

Seo, J.; Kim, D.; Gewinner, S.; Schöllkopf, W.; Bowers, M. T.; Pagel, K.; Helden, G. v.: Infrared multiple photon dissociation spectroscopy of protonated amino acid clusters with non-interacting side chains in the gas phase. International Journal of Mass Spectrometry 508, 117394 (2025)

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11.

Journal Article

Torres-Boy, A. Y.; Taccone, M.; Ober, K.; Osenton, M. B. T.; Meijer, G.; Helden, G. v.; Martínez-Haya, B.: Spectroscopic investigation of proton bonding at sub-kelvin temperatures. Physical Chemistry Chemical Physics 27 (4), pp. 1990 - 2000 (2025)

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12.

Journal Article

Safferthal, M.; Greis, K.; Chang, R.; Chang, C.-W.; Hoffmann, W.; Meijer, G.; Helden, G. v.; Pagel, K.: The impact of side-chain fluorination on proton-bound phenylalanine dimers: a cryogenic infrared spectroscopic study. Physical Chemistry Chemical Physics 26 (44), pp. 28155 - 28160 (2024)

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13.

Journal Article

Chang, C.-W.; Greis, K.; Prabhu, G. R. D.; Wehner, D.; Kirschbaum, C.; Ober, K.; Torres-Boy, A. Y.; Leichnitz, S.; Meijer, G.; Helden, G. v. et al.; Seeberger, P. H.; Pagel, K.: Mechanistic insight into benzylidene-directed glycosylation reactions using cryogenic infrared spectroscopy. Nature Synthesis 3, pp. 1377 - 1384 (2024)

MPG.PuRe

14.

Journal Article

Kirschbaum, C.; Greis, K.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.; Urner, L. H.: Structure and Conformation Determine Gas-Phase Infrared Spectra of Detergents. ChemPlusChem 89 (10), e202400340 (2024)

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15.

Journal Article

Meijer, G.; Helden, G. v.: Metal Monoxide Abundances as a Function of the C/O Ratio. ACS Earth and Space Chemistry 8 (9), pp. 1690 - 1692 (2024)

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ZIP

16.

Journal Article

Jara-Toro, R. A.; Taccone, M. I.; Dezalay, J.; Noble, J. A.; Helden, G. v.; Pino, G. A.: Observation of a core-excited dipole-bound state ∼1 eV above the electron detachment threshold in cryogenically cooled acetylacetonate. The Journal of Chemical Physics 161 (8), 084305 (2024)

MPG.PuRe

17.

Journal Article

Kirschbaum, C.; Greis, K.; Torres-Boy, A. Y.; Riedel, J.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Studying the Intrinsic Reactivity of Chromanes by Gas-Phase Infrared Spectroscopy. Journal of the American Society for Mass Spectrometry 35 (8), pp. 1950 - 1958 (2024)

MPG.PuRe

18.

Journal Article

Torres-Boy, A. Y.; Taccone, M.; Kirschbaum, C.; Ober, K.; Stein, T.; Meijer, G.; Helden, G. v.: Investigation of the Proton-Bound Dimer of Dihydrogen Phosphate and Formate Using Infrared Spectroscopy in Helium Droplets. The Journal of Physical Chemistry A 128 (22), pp. 4456 - 4466 (2024)

MPG.PuRe

19.

Journal Article

Greis, K.; Kirschbaum, C.; Ober, K.; Taccone, M.; Torres-Boy, A. Y.; Meijer, G.; Pagel, K.; Helden, G. v.: Infrared Spectroscopy of Fluorenyl Cations at Cryogenic Temperatures. The Journal of Physical Chemistry Letters 14 (50), pp. 11313 - 11317 (2023)

MPG.PuRe

20.

Journal Article

Safferthal, M.; Greis, K.; Chang, R.; Kirschbaum, C.; Hoffmann, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Cryogenic infrared spectroscopy reveals remarkably short NH⁺⋯F hydrogen bonds in fluorinated phenylalanines. Physical Chemistry Chemical Physics 25 (36), pp. 24783 - 24788 (2023)

MPG.PuRe

21.

Journal Article

Lettow, M.; Greis, K.; Mucha, E.; Lambeth, T. R.; Yaman, M.; Kontodimas, V.; Manz, C.; Hoffmann, W.; Meijer, G.; Julian, R. R. et al.; Helden, G. v.; Marianski, M. R.; Pagel, K.: Decoding the Fucose Migration Product during Mass-Spectrometric Analysis of Blood Group Epitopes. Angewandte Chemie International Edition 62 (24), e202302883 (2023)

MPG.PuRe

22.

Journal Article

Greis, K.; Griesbach, C. E.; Kirschbaum, C.; Meijer, G.; Helden, G. v.; Pagel, K.; Peczuh, M. W.: Characterization and Fate of a Septanosyl Ferrier Cation in the Gas and Solution Phases. The Journal of Organic Chemistry 88 (9), pp. 5543 - 5553 (2023)

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23.

Journal Article

Taccone, M.; Thomas, D.; Ober, K.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.: Infrared action spectroscopy of the deprotonated formic acid trimer, trapped in helium nanodroplets. Physical Chemistry Chemical Physics 25 (15), pp. 10907 - 10916 (2023)

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24.

Journal Article

Riedel, J.; Lettow, M.; Grabarics, M.; Götze, M.; Miller, R. L.; Boons, G.-J.; Meijer, G.; Helden, G. v.; Szekeres, G. P.; Pagel, K.: Predicting Structural Motifs of Glycosaminoglycans using Cryogenic Infrared Spectroscopy and Random Forest. Journal of the American Chemical Society 145 (14), pp. 7859 - 7868 (2023)

MPG.PuRe

25.

Journal Article

Kirschbaum, C.; Young, R. S. E.; Greis, K.; Menzel, J. P.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Causon, T.; Narreddula, V. R. et al.; Poad, B. L. J.; Blanksby, S. J.; Pagel, K.: Establishing carbon-carbon double bond position and configuration in unsaturated fatty acids by gas-phase infrared spectroscopy. Chemical Science 14 (10), pp. 2518 - 2527 (2023)

MPG.PuRe

26.

Journal Article

Greis, K.; Leichnitz, S.; Kirschbaum, C.; Chang, C.-W.; Lin, M.-H.; Meijer, G.; Helden, G. v.; Seeberger, P. H.; Pagel, K.: The Influence of the Electron Density in Acyl Protecting Groups on the Selectivity of Galactose Formation. Journal of the American Chemical Society 144 (44), pp. 20258 - 20266 (2022)

MPG.PuRe

27.

Journal Article

Kirschbaum, C.; Greis, K.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Cryogenic infrared spectroscopy provides mechanistic insight into the fragmentation of phospholipid silver adducts. Analytical and Bioanalytical Chemistry 414 (18), pp. 5275 - 5285 (2022)

MPG.PuRe

28.

Journal Article

Greis, K.; Kirschbaum, C.; Taccone, M.; Götze, M.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Studying the Key Intermediate of RNA Autohydrolysis by Cryogenic Gas-Phase Infrared Spectroscopy. Angewandte Chemie International Edition 61 (19), e202115481 (2022)

MPG.PuRe

29.

Journal Article

Greis, K.; Kirschbaum, C.; Taccone, M.; Götze, M.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Untersuchung des reaktiven Intermediats der RNA Autohydrolyse mittels kryogener Infrarotspektroskopie in der Gasphase. Angewandte Chemie 134 (19), e202115481 (2022)

MPG.PuRe

30.

Journal Article

Greis, K.; Kirschbaum, C.; Fittolani, G.; Mucha, E.; Chang, R.; Helden, G. v.; Meijer, G.; Delbianco, M.; Seeberger, P. H.; Pagel, K.: Neighboring Group Participation of Benzoyl Protecting Groups in C3- and C6-Fluorinated Glucose. European Journal of Organic Chemistry 2022 (15), e202200255 (2022)

MPG.PuRe

31.

Journal Article

Greis, K.; Kirschbaum, C.; Helden, G. v.; Pagel, K.: Gas-phase infrared spectroscopy of glycans and glycoconjugates. Current Opinion in Structural Biology 72, pp. 194 - 202 (2022)

MPG.PuRe

32.

Journal Article

Thomas, D.; Taccone, M.; Ober, K.; Mucha, E.; Meijer, G.; Helden, G. v.: Helium Nanodroplet Infrared Action Spectroscopy of the Proton-Bound Dimer of Hydrogen Sulfate and Formate: Examining Nuclear Quantum Effects. The Journal of Physical Chemistry A 125 (42), pp. 9279 - 9287 (2021)

MPG.PuRe

33.

Journal Article

Kirschbaum, C.; Greis, K.; Polewski, L.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Unveiling Glycerolipid Fragmentation by Cryogenic Infrared Spectroscopy. Journal of the American Chemical Society 143 (36), pp. 14827 - 14834 (2021)

MPG.PuRe

34.

Journal Article

Grabarics, M.; Lettow, M.; Kirk, A. T.; Helden, G. v.; Causon, T. J.; Pagel, K.: Plate-height model of ion mobility-mass spectrometry: Part 2-Peak-to-peak resolution and peak capacity. Journal of Separation Science 44 (14), pp. 2798 - 2813 (2021)

MPG.PuRe

35.

Journal Article

Kirschbaum, C.; Greis, K.; Lettow, M.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Pagel, K.: Non-covalent double bond sensors for gas-phase infrared spectroscopy of unsaturated fatty acids. Analytical and Bioanalytical Chemistry 413 (14), pp. 3643 - 3653 (2021)

MPG.PuRe

36.

Journal Article

Lettow, M.; Greis, K.; Grabarics, M.; Horlebein, J.; Miller, R. L.; Meijer, G.; Helden, G. v.; Pagel, K.: Chondroitin Sulfate Disaccharides in the Gas Phase: Differentiation and Conformational Constraints. The Journal of Physical Chemistry A 125 (20), pp. 4373 - 4379 (2021)

MPG.PuRe

37.

Journal Article

Kirschbaum, C.; Greis, K.; Mucha, E.; Kain, L.; Deng, S.; Zappe, A.; Gewinner, S.; Schöllkopf, W.; Helden, G. v.; Meijer, G. et al.; Savage, P. B.; Marianski, M.; Teyton, L.; Pagel, K.: Unravelling the structural complexity of glycolipids with cryogenic infrared spectroscopy. Nature Communications 12 (1), 1201 (2021)

MPG.PuRe

38.

Journal Article

Greis, K.; Kirschbaum, C.; Leichnitz, S.; Gewinner, S.; Schöllkopf, W.; Helden, G. v.; Meijer, G.; Seeberger, P. H.; Pagel, K.: Direct Experimental Characterization of the Ferrier Glycosyl Cation in the Gas Phase. Organic Letters 22 (22), pp. 8916 - 8919 (2020)

MPG.PuRe

39.

Journal Article

Grabarics, M.; Lettow, M.; Kirk, A. T.; Helden, G. v.; Causon, T. J.; Pagel, K.: Plate-height model of ion mobility-mass spectrometry. Analyst 145 (19), pp. 6313 - 6333 (2020)

MPG.PuRe

40.

Journal Article

Thomas, D.; Chang, R.; Mucha, E.; Lettow, M.; Greis, K.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.: Probing the conformational landscape and thermochemistry of DNA dinucleotide anions via helium nanodroplet infrared action spectroscopy. Physical Chemistry Chemical Physics 22 (33), pp. 18400 - 18413 (2020)

MPG.PuRe

41.

Journal Article

Greis, K.; Mucha, E.; Lettow, M.; Thomas, D.; Kirschbaum, C.; Moon, S.; Pardo-Vargas, A.; Helden, G. v.; Meijer, G.; Gilmore, K. et al.; Seeberger, P. H.; Pagel, K.: The Impact of Leaving Group Anomericity on the Structure of Glycosyl Cations of Protected Galactosides. ChemPhysChem 21 (17), pp. 1905 - 1907 (2020)

MPG.PuRe

42.

Journal Article

Lettow, M.; Grabarics, M.; Greis, K.; Mucha, E.; Thomas, D.; Chopra, P.; Boons, G.-J.; Karlsson, R.; Turnbull, J. E.; Meijer, G. et al.; Miller, R. L.; Helden, G. v.; Pagel, K.: Cryogenic Infrared Spectroscopy Reveals Structural Modularity in the Vibrational Fingerprints of Heparan Sulfate Diastereomers. Analytical Chemistry 92 (15), pp. 10228 - 10232 (2020)

MPG.PuRe

43.

Journal Article

Kirschbaum, C.; Saied, E. M.; Greis, K.; Mucha, E.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Poad, B. L. J.; Blanksby, S. J. et al.; Arenz, C.; Pagel, K.: Resolving Sphingolipid Isomers Using Cryogenic Infrared Spectroscopy. Angewandte Chemie International Edition 59 (32), pp. 13638 - 13642 (2020)

MPG.PuRe

44.

Journal Article

Kirschbaum, C.; Saied, E. M.; Greis, K.; Mucha, E.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.; Poad, B. L. J.; Blanksby, S. J. et al.; Arenz, C.; Pagel, K.: Unterscheidung von isomeren Sphingolipiden mittels kryogener Infrarotspektroskopie. Angewandte Chemie 132 (32), pp. 13740 - 13744 (2020)

MPG.PuRe

45.

Journal Article

Marianski, M.; Mucha, E.; Greis, K.; Moon, S.-Y.; Pard, A.; Kirschbaum, C.; Thomas, D.; Meijer, G.; Helden, G. v.; Gilmore, K. et al.; Seeberger, P. H.; Pagel, K.: Remote Participation during Glycosylation Reactions of Galactose Building Blocks: Direct Evidence from Cryogenic Vibrational Spectroscopy. Angewandte Chemie International Edition 59 (15), pp. 6166 - 6171 (2020)

MPG.PuRe

46.

Journal Article

Marianski, M.; Mucha, E.; Greis, K.; Moon, S.-Y.; Pard, A.; Kirschbaum, C.; Thomas, D.; Meijer, G.; Helden, G. v.; Gilmore, K. et al.; Seeberger, P. H.; Pagel, K.: Fernpartizipation in Glykosylierungen von Galaktose‐Bausteinen: Direktnachweis durch kryogene Schwingungsspektroskopie. Angewandte Chemie 132 (15), pp. 6224 - 6229 (2020)

MPG.PuRe

47.

Journal Article

Lettow, M.; Grabarics, M.; Mucha, E.; Thomas, D.; Polewski, L.; Freyse, J.; Rademann, J.; Meijer, G.; Helden, G. v.; Pagel, K.: IR action spectroscopy of glycosaminoglycan oligosaccharides. Analytical and Bioanalytical Chemistry 412 (3), pp. 533 - 537 (2020)

MPG.PuRe

48.

Journal Article

Lee, J. B.; Jeon, M. H.; Seo, J. K.; Helden, G. v.; Rohde, J.-U.; Zhao, B. S.; Seo, J.; Hong, S. Y.: Annulative π-Extension of Unactivated Benzene Derivatives through Nondirected C-H Arylation. Organic Letters 21 (17), pp. 7004 - 7008 (2019)

MPG.PuRe

49.

Journal Article

Lettow, M.; Mucha, E.; Manz, C.; Thomas, D.; Marianski, M.; Meijer, G.; Helden, G. v.; Pagel, K.: The role of the mobile proton in fucose migration. Analytical and Bioanalytical Chemistry 411 (19), pp. 4637 - 4645 (2019)

MPG.PuRe

50.

Journal Article

Hoffmann, W.; Langenhan, J.; Huhmann, S.; Moschner, J.; Chang, R.; Accorsi, M.; Seo, J.; Rademann, J.; Meijer, G.; Koksch, B. et al.; Bowers, M. T.; Helden, G. v.; Pagel, K.: An Intrinsic Hydrophobicity Scale for Amino Acids and Its Application to Fluorinated Compounds. Angewandte Chemie International Edition 58 (24), pp. 8216 - 8220 (2019)

MPG.PuRe

51.

Journal Article

Hoffmann, W.; Langenhan, J.; Huhmann, S.; Moschner, J.; Chang, R.; Accorsi, M.; Seo, J.; Rademann, J.; Meijer, G.; Koksch, B. et al.; Bowers, M. T.; Helden, G. v.; Pagel, K.: Eine intrinsische Hydrophobieskala für Aminosäuren und ihre Anwendung auf fluorierte Verbindungen. Angewandte Chemie 131 (24), pp. 8300 - 8304 (2019)

MPG.PuRe

52.

Journal Article

Thomas, D.; Mucha, E.; Lettow, M.; Meijer, G.; Rossi, M.; Helden, G. v.: Characterization of a trans-trans Carbonic Acid-Fluoride Complex by Infrared Action Spectroscopy in Helium Nanodroplets. Journal of the American Chemical Society 141 (14), pp. 5815 - 5823 (2019)

MPG.PuRe

53.

Journal Article

Marianski, M.; Seo, J.; Mucha, E.; Thomas, D.; Jung, S.; Schlögl, R.; Meijer, G.; Trunschke, A.; Helden, G. v.: Structural Characterization of Molybdenum Oxide Nanoclusters Using Ion Mobility Spectrometry-Mass Spectrometry and Infrared Action Spectroscopy. The Journal of Physical Chemistry C 123 (13), pp. 7845 - 7853 (2019)

MPG.PuRe

54.

Journal Article

Mucha, E.; Marianski, M.; Xu, F.-F.; Thomas, D.; Meijer, G.; Helden, G. v.; Seeberger, P. H.; Pagel, K.: Publisher Correction: Unravelling the structure of glycosyl cations via cold-ion infrared spectroscopy. Nature Communications 9, 4767 (2018)

MPG.PuRe

55.

Journal Article

Mucha, E.; Marianski, M.; Xu, F.-F.; Thomas, D.; Meijer, G.; Helden, G. v.; Seeberger, P. H.; Pagel, K.: Unravelling the structure of glycosyl cations via cold-ion infrared spectroscopy. Nature Communications 9, 4174 (2018)

MPG.PuRe

56.

Journal Article

Thomas, D.; Marianski, M.; Mucha, E.; Meijer, G.; Johnson, M. A.; Helden, G. v.: Ground‐State Structure of the Proton‐Bound Formate Dimer by Cold‐Ion Infrared Action Spectroscopy. Angewandte Chemie International Edition 57 (33), pp. 10615 - 10619 (2018)

MPG.PuRe

57.

Journal Article

Thomas, D.; Marianski, M.; Mucha, E.; Meijer, G.; Johnson, M. A.; Helden, G. v.: Ground‐State Structure of the Proton‐Bound Formate Dimer by Cold‐Ion Infrared Action Spectroscopy. Angewandte Chemie 130 (33), pp. 10775 - 10779 (2018)

MPG.PuRe

58.

Journal Article

Scutelnic, V.; Perez, M. A. S.; Marianski, M.; Warnke, S.; Gregor, A.; Rothlisberger, U.; Bowers, M. T.; Baldauf, C.; Helden, G. v.; Rizzo, T. R. et al.; Seo, J.: The Structure of the Protonated Serine Octamer. Journal of the American Chemical Society 140 (24), pp. 7554 - 7560 (2018)

MPG.PuRe

59.

Journal Article

Mucha, E.; Lettow, M.; Marianski, M.; Thomas, D.; Struwe, W. B.; Harvey, D. J.; Meijer, G.; Seeberger, P. H.; Helden, G. v.; Pagel, K.: Fucose Migration in Intact Protonated Glycan Ions: A Universal Phenomenon in Mass Spectrometry. Angewandte Chemie International Edition 57 (25), pp. 7440 - 7443 (2018)

MPG.PuRe

60.

Journal Article

Mucha, E.; Lettow, M.; Marianski, M.; Thomas, D.; Struwe, W. B.; Harvey, D. J.; Meijer, G.; Seeberger, P. H.; Helden, G. v.; Pagel, K.: Fucose‐Migration in intakten protonierten Glykan‐Ionen – ein universelles Phänomen in der Massenspektrometrie. Angewandte Chemie 130 (25), pp. 7562 - 7565 (2018)

MPG.PuRe

61.

Journal Article

Seo, J.; Hoffmann, W.; Malerz, S.; Warnke, S.; Bowers, M. T.; Pagel, K.; Helden, G. v.: Side-chain effects on the structures of protonated amino acid dimers: A gas-phase infrared spectroscopy study. International Journal of Mass Spectrometry 429, pp. 115 - 120 (2018)

MPG.PuRe

62.

Journal Article

Thomas, D.; Mucha, E.; Gewinner, S.; Schöllkopf, W.; Meijer, G.; Helden, G. v.: Vibrational Spectroscopy of Fluoroformate, FCO₂^-, Trapped in Helium Nanodroplets. The Journal of Physical Chemistry Letters 9 (9), pp. 2305 - 2310 (2018)

MPG.PuRe

63.

Journal Article

Hoffmann, W.; Folmert, K.; Moschner, J.; Huang, X.; von Berlepsch, H.; Koksch, B.; Bowers, M. T.; Helden, G. v.; Pagel, K.: NFGAIL Amyloid Oligomers: The Onset of Beta-Sheet Formation and the Mechanism for Fibril Formation. Journal of the American Chemical Society 140 (1), pp. 244 - 249 (2018)

MPG.PuRe

64.

Journal Article

Seo, J.; Warnke, S.; Pagel, K.; Bowers, M. T.; Helden, G. v.: Infrared spectrum and structure of the homochiral serine octamer-dichloride complex. Nature Chemistry 9, pp. 1263 - 1268 (2017)

MPG.PuRe

65.

Journal Article

Hoffmann, W.; Helden, G. v.; Pagel, K.: Ion mobility-mass spectrometry and orthogonal gas-phase techniques to study amyloid formation and inhibition. Current Opinion in Structural Biology 46, pp. 7 - 15 (2017)

MPG.PuRe

66.

Journal Article

Mucha, E.; Gonzalez Florez, A. I.; Marianski, M.; Thomas, D.; Hoffmann, W.; Struwe, W. B.; Hahm, H. S.; Gewinner, S.; Schöllkopf, W.; Seeberger, P. H. et al.; Helden, G. v.; Pagel, K.: Glycan Fingerprinting via Cold-Ion Infrared Spectroscopy. Angewandte Chemie International Edition 56 (37), pp. 11248 - 11251 (2017)

MPG.PuRe

67.

Journal Article

Mucha, E.; Gonzalez Florez, A. I.; Marianski, M.; Thomas, D.; Hoffmann, W.; Struwe, W. B.; Hahm, H. S.; Gewinner, S.; Schöllkopf, W.; Seeberger, P. H. et al.; Helden, G. v.; Pagel, K.: Fingerabdrücke für Glykane durch Spektroskopie kalter Ionen. Angewandte Chemie 129 (37), pp. 11400 - 11404 (2017)

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68.

Journal Article

Warnke, S.; Hoffmann, W.; Seo, J.; Genst, E. D.; Helden, G. v.; Pagel, K.: From Compact to String—The Role of Secondary and Tertiary Structure in Charge-Induced Unzipping of Gas-Phase Proteins. Journal of the American Society for Mass Spectrometry 28 (4), pp. 638 - 646 (2017)

MPG.PuRe

69.

Journal Article

Seo, J.; Hoffmann, W.; Warnke, S.; Huang, X.; Gewinner, S.; Schöllkopf, W.; Bowers, M. T.; Helden, G. v.; Pagel, K.: An infrared spectroscopy approach to follow β-sheet formation in peptide amyloid assemblies. Nature Chemistry 9 (1), pp. 39 - 44 (2017)

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70.

Journal Article

Seo, J.; Jang, J.; Warnke, S.; Gewinner, S.; Schöllkopf, W.; Helden, G. v.: Stacking Geometries of Early Protoporphyrin IX Aggregates Revealed by Gas-Phase Infrared Spectroscopy. Journal of the American Chemical Society 138 (50), pp. 16315 - 16321 (2016)

MPG.PuRe

71.

Journal Article

Seo, J.; Hoffmann, W.; Warnke, S.; Bowers, M. T.; Pagel, K.; Helden, G. v.: Retention of Native Protein Structures in the Absence of Solvent: A Coupled Ion Mobility and Spectroscopic Study. Angewandte Chemie International Edition 55 (45), pp. 14173 - 14176 (2016)

MPG.PuRe

72.

Journal Article

Seo, J.; Hoffmann, W.; Warnke, S.; Bowers, M. T.; Pagel, K.; Helden, G. v.: Die Erhaltung nativer Proteinstrukturen unter Ausschluss von Lösungsmittel: eine Untersuchung mit Hilfe der Kombination von Ionenmobilität mit Spektroskopie. Angewandte Chemie 128 (45), pp. 14380 - 14384 (2016)

MPG.PuRe

73.

Journal Article

Göth, M.; Lermyte, F.; Schmitt, X. J.; Warnke, S.; Helden, G. v.; Sobott, F.; Pagel, K.: Gas-phase microsolvation of ubiquitin: investigation of crown ether complexation sites using ion mobility-mass spectrometry. Analyst 141 (19), pp. 5502 - 5510 (2016)

MPG.PuRe

74.

Journal Article

Seo, J.; Warnke, S.; Gewinner, S.; Schöllkopf, W.; Bowers, M. T.; Pagel, K.; Helden, G. v.: The impact of environment and resonance effects on the site of protonation of aminobenzoic acid derivatives. Physical Chemistry Chemical Physics 18 (36), pp. 25474 - 25482 (2016)

MPG.PuRe

75.

Journal Article

Kölbel, K.; Warnke, S.; Seo, J.; Helden, G. v.; Moretti, R.; Meiler, J.; Pagel, K.; Sinz, A.: Conformational Shift of a β-Hairpin Peptide upon Complex Formation with an Oligo–proline Peptide Studied by Mass Spectrometry. ChemistrySelect 1 (13), pp. 3651 - 3656 (2016)

MPG.PuRe

76.

Journal Article

Hoffmann, W.; Marianski, M.; Warnke, S.; Seo, J.; Baldauf, C.; Helden, G. v.; Pagel, K.: Assessing the stability of alanine-based helices by conformer-selective IR spectroscopy. Physical Chemistry Chemical Physics 18 (29), pp. 19950 - 19954 (2016)

MPG.PuRe

77.

Journal Article

Gonzalez Florez, A. I.; Mucha, E.; Ahn, D.-S.; Gewinner, S.; Schöllkopf, W.; Pagel, K.; Helden, G. v.: Charge-induced unzipping of isolated proteins to a defined secondary structure. Angewandte Chemie International Edition 55 (10), pp. 3295 - 3299 (2016)

MPG.PuRe

78.

Journal Article

Gonzalez Florez, A. I.; Mucha, E.; Ahn, D.-S.; Gewinner, S.; Schöllkopf, W.; Pagel, K.; Helden, G. v.: Charge-induced unzipping of isolated proteins to a defined secondary structure. Angewandte Chemie 128 (10), pp. 3356 - 3360 (2016)

MPG.PuRe

79.

Journal Article

Helden, G. v.; Schöllkopf, W.; Pagel, K.: Strukturen von Peptidaggregaten erforscht mit dem neuen Freie-Elektronen-Laser des Fritz-Haber-Instituts. Jahrbuch / Max-Planck-Gesellschaft, 9950614 (2016)

MPG.PuRe

80.

Journal Article

Gonzalez Florez, A. I.; Ahn, D.-S.; Gewinner, S.; Schöllkopf, W.; Helden, G. v.: IR spectroscopy of protonated leu-enkephalin and its 18-crown-6 complex embedded in helium droplets. Physical Chemistry Chemical Physics 17 (34), pp. 21902 - 21911 (2015)

MPG.PuRe

81.

Journal Article

Warnke, S.; Helden, G. v.; Pagel, K.: Analyzing the higher order structure of proteins with conformer-selective ultraviolet photodissociation. Proteomics 15 (16), pp. 2804 - 2812 (2015)

MPG.PuRe

82.

Journal Article

Urner, L. H.; Thota, B. N. S.; Nachtigall, O.; Warnke, S.; Helden, G. v.; Haag, R.; Pagel, K.: Online monitoring the isomerization of an azobenzene-based dendritic bolaamphiphile using ion mobility-mass spectrometry. Chemical Communications 51 (42), pp. 8801 - 8804 (2015)

MPG.PuRe

83.

Journal Article

Warnke, S.; Seo, J.; Boschmans, J.; Sobott, F.; Scrivens, J. H.; Bleiholder, C.; Bowers, M. T.; Gewinner, S.; Schöllkopf, W.; Pagel, K. et al.; Helden, G. v.: Protomers of Benzocaine: Solvent and Permittivity Dependence. Journal of the American Chemical Society 137 (12), pp. 4236 - 4242 (2015)

MPG.PuRe

84.

Journal Article

Schubert, F.; Rossi, M.; Baldauf, C.; Pagel, K.; Warnke, S.; Helden, G. v.; Filsinger, F.; Kupser, P.; Meijer, G.; Salwiczek, M. et al.; Koksch, B.; Scheffler, M.; Blum, V.: Exploring the conformational preferences of 20-residue peptides in isolation: Ac-Ala₁₉-Lys + H⁺ vs. Ac-Lys-Ala₁₉ + H⁺ and the current reach of DFT. Physical Chemistry Chemical Physics 17 (11), pp. 7373 - 7385 (2015)

MPG.PuRe

85.

Journal Article

Schubert, F.; Pagel, K.; Rossi, M.; Warnke, S.; Salwiczek, M.; Koksch, B.; Helden, G. v.; Blum, V.; Baldauf, C.; Scheffler, M.: Native like helices in a specially designed β peptide in the gas phase. Physical Chemistry Chemical Physics 17 (7), pp. 5376 - 5385 (2015)

MPG.PuRe

86.

Journal Article

Warnke, S.; Baldauf, C.; Bowers, M. T.; Pagel, K.; Helden, G. v.: Photodissociation of Conformer-Selected Ubiquitin Ions Reveals Site-Specific Cis/Trans Isomerization of Proline Peptide Bonds. Journal of the American Chemical Society 136 (29), pp. 10308 - 10314 (2014)

MPG.PuRe

87.

Journal Article

Schnell, M.; Bunker, P.; Helden, G. v.; Grabow, J.-U.; Meijer, G.; van der Avoird, A.: Stark Effect in the Benzene Dimer. The Journal of Physical Chemistry A 117 (50), pp. 13775 - 13778 (2013)

MPG.PuRe

88.

Journal Article

Baldauf, C.; Pagel, K.; Warnke, S.; Helden, G. v.; Koksch, B.; Blum, V.; Scheffler, M.: How Cations Change Peptide Structure. Chemistry-a European Journal 19 (34), pp. 11224 - 11234 (2013)

MPG.PuRe

89.

Journal Article

Schnell, M.; Erlekam, U.; Bunker, P.; Helden, G. v.; Grabow, J.-U.; Meijer, G.; Avoird, A. v. d.: Unraveling the internal dynamics of the benzene dimer: a combined theoretical and microwave spectroscopy study. Physical Chemistry Chemical Physics 15 (25), pp. 10207 - 10223 (2013)

MPG.PuRe

90.

Journal Article

Schnell, M.; Erlekam, U.; Bunker, P.; Helden, G. v.; Grabow, J.-U.; Meijer, G.; Avoird, A. v. d.: Structure of the Benzene Dimer - Governed by Dynamics. Angewandte Chemie International Edition 52 (19), pp. 5180 - 5183 (2013)

MPG.PuRe

91.

Journal Article

Schnell, M.; Erlekam, U.; Bunker, P.; Helden, G. v.; Grabow, J.-U.; Meijer, G.; Avoird, A. v. d.: Die Struktur des Benzoldimers – die Dynamik gewinnt. Angewandte Chemie 125 (19), pp. 5288 - 5292 (2013)

MPG.PuRe

92.

Journal Article

Warnke, S.; Helden, G. v.; Pagel, K.: Communication: Protein Structure in the Gas Phase: The Influence of Side-Chain Microsolvation. Journal of the American Chemical Society 135 (4), pp. 1177 - 1180 (2013)

MPG.PuRe

93.

Journal Article

Filsinger, F.; Ahn, D.-S.; Meijer, G.; Helden, G. v.: Photoexcitation of mass/charge selected hemin⁺, caught in helium nanodroplets. Physical Chemistry Chemical Physics 14 (38), pp. 13370 - 13377 (2012)

MPG.PuRe

94.

Journal Article

Bierau, F.; Kupser, P.; Meijer, G.; Helden, G. v.: Catching proteins in liquid helium droplets. Physical Review Letters 105 (13), 133402 (2010)

MPG.PuRe

95.

Journal Article

Kirilyuk, A.; Fielicke, A.; Demyk, K.; Helden, G. v.; Meijer, G.; Rasing, T.: Ferrimagnetic cagelike Fe₄O₆ cluster: Structure determination from infrared dissociation spectroscopy. Physical Review B, Rapid Comm. 82 (2), pp. 020405 -1 - 020405 -4 (2010)

MPG.PuRe

96.

Journal Article

Rijs, A. M.; Ohanessian, G.; Oomens, J.; Meijer, G.; Helden, G. v.; Compagnon, I.: Internal Proton Transfer Leading to Stable Zwitterionic Structures in a Neutral Isolated Peptide. Angewandte Chemie 122 (13), pp. 2382 - 2385 (2010)

MPG.PuRe

97.

Journal Article

Rijs, A. M.; Ohanessian, G.; Oomens, J.; Meijer, G.; Helden, G. v.; Compagnon, I.: Internal proton transfer leading to stable zwitterionic structures in a neutral isolated peptide. Angewandte Chemie International Edition 49 (13), pp. 2332 - 2335 (2010)

MPG.PuRe

98.

Journal Article

Zhu, H.; Blom, M.; Compagnon, I.; Rijs, A. M.; Roy, S.; Helden, G. v.; Schmidt, B.: Conformations and vibrational spectra of a model tripeptide: change of secondary structure upon micro-solvation. Physical Chemistry Chemical Physics 12, pp. 3415 - 3425 (2010)

MPG.PuRe

99.

Journal Article

Bakker, J. M.; Lapoutre, V. J.F.; Redlich, B.; Oomens, J.; Sartakov, B. G.; Fielicke, A.; Helden, G. v.; Meijer, G.; Meer, A. F. G. v. d.: Intensity-resolved IR multiple photon ionization and fragmentation of C₆₀. The Journal of Chemical Physics 132 (7), 074305 (2010)

MPG.PuRe