Publikationen von Gert von Helden

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

Seo, J., D. Kim, S. Gewinner, W. Schöllkopf, M.T. Bowers, K. Pagel und G.von Helden: 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).

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

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

Jara-Toro, R.A., M.I. Taccone, J. Dezalay, J.A. Noble, G.von Helden und G.A. Pino: 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).

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

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

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

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

Torres-Boy, A.Y., M. Taccone, C. Kirschbaum, K. Ober, T. Stein, G. Meijer und G.von Helden: Investigation of the Proton-Bound Dimer of Dihydrogen Phosphate and Formate Using Infrared Spectroscopy in Helium Droplets. The Journal of Physical Chemistry A, im Druck.

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

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

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

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

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

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

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

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

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

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