News | Johannes Hunger

Our collaborative paper on Fast Collective Hydrogen-Bond Dynamics in Hexafluoroisopropanol Related to its Chemical Activity is online at Angewandte Chemie. more

Our paper on Deciphering Spectroscopic Signatures of Competing Ca²⁺ - Peptide Interactions has been accepted to J Phys Chem B. more

Our paper on Flipping Water Orientation at the Surface of Water-in-Salt and Salt-in-Water Solutions has been accepted to J Phys Chem Lett. more

Our paper on Ion Association and Hydration of Some Heavy-Metal Nitrate Salts in Aqueous Solution has been accepted to J Phys Chem B. more

A collaborative paper with the Krossing group on Pushing redox potentials to highly positive values using inert fluorobenzenes and weakly coordinating anions is online at Nature Communications. more

A collaborative paper on Predicting and Probing the Local Temperature Rise Around Plasmonic Core–Shell Nanoparticles to Study Thermally Activated Processes has been published in ChemPlusChem. more

A collaborative paper on Ion and Molecular Sieving With Ultrathin Polydopamine Nanomembranes has just appeared in Advanced Materials. more

A collaborative paper Elucidating the role of water in collagen self-assembly by isotopically modulating collagen hydration has been published in PNAS (Illustration: Laura Canil & Giulia Giubertoni). more

Our collaborative study entitled Comparative analysis of dielectric spectra in protic ionic liquids: Experimental findings and computational molecular decomposition has been published in J. Mol. Liq. more

Our joint paper showing that Liquid–Liquid Phase Separation of the Intrinsically Disordered Domain of the Fused in Sarcoma Protein Results in Substantial Slowing of Hydration Dynamics has been accepted to J Phys Chem Lett. more

Our collaborative paper studying Charge transport in protic ionic liquids: Effect of protonation state in 1-methylimidazolium – acetate/trifluoroacetate mixtures has been published in J Mol Liq. more

A collaborative paper on a Stable Molybdenum(0) Carbonyl Complex for Upconversion and Photoredox Catalysis has been published in JACS. more

A collaborative paper showing that Chemistry governs water organization at a graphene electrode has been published in Nature. more

A collaborative paper on a Direct Probe of Electrochemical Pseudocapacitive pH Jump at a Graphene Electrode has been published in Angewandte Chemie. more

Our paper evidencing ion-specific binding of cations to the carboxylate and of anions to the amide of alanylalanine has been published in Communications Chemistry. more

Our paper showing that the Nature of Cations Critically Affects Water at the Negatively Charged Silica Interface has been published in JACS. more

Our paper on Elucidating Conformation and Hydrogen-Bonding Motifs of Reactive Thiourea Intermediates has been published in ACS Catalysis. more

A collaborative paper on The dielectric function profile across the water interface through surface-specific vibrational spectroscopy and simulations has been published in PNAS. more

A collaborative paper entiteled Ion Adsorption and Desorption at the CaF₂-Water Interface Probed by Flow Experiments and Vibrational Spectroscopy has been published in Angewandte Chemie. more

Our paper on Ion-pairing equilibria and kinetics of dimethyl phosphate: A model for counter-ion binding to the phosphate backbone of nucleic acids has been published in J Mol Liq. more

Our paper showing that A single methyl group drastically changes urea’s hydration dynamics has been published in J Chem Phys. more

A collaborative paper on Probing Water State during Lipidic Mesophases Phase Transitions has been published in Angewandte Chemie. more

A collaborative paper on how the Interfacial Water Structure of Binary Liquid Mixtures Reflects Nonideal Behavior has been published in J Phys Chem B. more

Amelie successfully defends her PhD thesis. Congrats!

Ben and Johannes have published a collaborative paper on the Dielectric Response of Light, Heavy and Heavy-Oxygen Water: Isotope Effects on the Hydrogen-Bonding Network’s Collective Relaxation Dynamics in PCCP. more

Our paper on Association Equilibria of Organo-Phosphoric Acids with Imines from a Combined Dielectric and Nuclear Magnetic Resonance Spectroscopy Approach has been published in Analytical Chemistry. more

Hao, Johannes, and Mischa have published a collaborative paper on the Role of Water in CaCO₃ Biomineralization in JACS. more

Mischa and Johannes have published a perspective entitled Between a hydrogen and a covalent bond in Science. more

A collaborative paper on Vibrational couplings and energy transfer pathways of water's bending mode has been published in Nature Communications more

A collaborative paper showing that The Bending Mode of Water is A Powerful Probe for Hydrogen Bond Structure of Aqueous Systems has been accepted for publication in J. Phys. Chem. Lett.. more

Our paper on Composition-Dependent Hydrogen-Bonding Motifs and Dynamics in Brønsted Acid-Base Mixtures has been accepted for publication in J. Phys. Chem. B. more

Our study showing that Macroscopic conductivity of aqueous electrolyte solutions scales with ultrafast microscopic ion motions has been published in Nature Communications. more

Bence Kutus has been awarded an Alexander von Humboldt Research Fellowship for postdoctoral researchers on Exploring the fundamentals of ion-pairing relevant to phase transfer catalysis.

Christian successfully defends his PhD thesis. Congrats!

Our paper showing that CF₃-groups critically enhance the binding of thiourea catalysts to ketones – a NMR and FT-IR study has been accepted for publication in J. Mol. Liq. more

Our paper showing that the Hydrophobic pattern of alkylated ureas markedly affects water rotation and hydrogen bond dynamics in aqueous solution has been accepted for publication in PhysChemChemPhys. more

Bence Kutus wins the youth award for the best oral presentation at the 36th ICSC. Congratulations! more

A collaborative paper "on the origin of the extremely different solubilities of polyethers in water" has been published in Nature Communications. more

A collaborative paper on "energy relaxation and thermal diffusion in IR pump-probe spectroscopy of hydrogen-bonded liquids" has been accepted for publication in J. Phys. Chem. Lett. more

Our paper showing that the Hydrogen bond structure and dynamics of TADDOL asymmetric
organo-catalysts correlate with catalytic activity has been accepted for publication in Chemistry - A European Journal. more

Christian Malm won the poster prize at the 21th JCF-Frühjahrssymposium in Bremen.

Katrin, Konrad, and Johannes gave a lecture/workshop on "Why ice is slippery" at the Physik am Samstag lecture series for high school students at University Mainz. more

Our paper on Dynamics of Dicyanamide in Ionic Liquids Are Dominated by Local Interactions has been accepted for publication in J. Phys. Chem B. more

Our paper on Specific Ion Effects on an Oligopeptide: Bidentate binding matters for the Guanidinium Cation has been accepted for publication in Angewandte Chemie. more

Our collaborative paper on the Large Hydrogen-Bond Mismatch between TMAO and Urea Promotes Their Hydrophobic Association has been published in Chem. more

Christian Malm and Johannes Hunger have published a collaborative paper on Tritopic ion-pair receptors based on anion-π interactions for selective CaX₂ binding in Dalton Transactions. more

A collaborative paper on Saturation of Charge-Induced Water Alignment at Model Membrane Surfaces has been published in Science Advances. more

Kota Usui, Johannes Hunger, and Mischa Bonn have published together with Marialore Sulpizi a paper on Dynamical heterogeneities of rotational motion in room temperature ionic liquids evidenced by molecular dynamics simulations in the Journal of Chemical Physics. more

^{(Picture: Ioannis Pallas www.ioannispallas.com)}
Vasileios Balos defended his thesis "Specific ion effects on protein fragments" in Amsterdam. Congrats Vasilis! more

^{(© iStockphoto/Henrik Jonsson)}
Martijn Tros, Linli Zheng, Johannes Hunger, Mischa Bonn, Daniel Bonn, Gertien J. Smits, and Sander Woutersen have published a collaborative paper on
Picosecond orientational dynamics of water in living cells showing that Water is simply water – even in living cells in Nature Communications. more

Heejae Kim, Johannes Hunger, Enrique Cánovas, Melike Karakus, Zoltán Mics, Maksim Grechko, Dmitry Turchinovich, Sapun H. Parekh  and Mischa Bonn have published a paper on Direct observation of mode-specific phonon-band gap coupling in methylammonium lead halide perovskites in Nature Communications. more

Johannes Hunger and Sapun Parekh have published a perspective on A water window on surface chemistry in Science. more

Christian Malm, Heejae Kim, Manfred Wagner, and Johannes Hunger have a paper on Complexity in acid-base titrations: Multimer formation between phosphoric acids and imines accepted to Chem. Eur. J. more

Vasilis Balos wins the poster prize at the 116th General Assembly of the German Bunsen Society. more

Seoncheol Cha joins the group as a postdoc to study fundamentals of diol catalysis.

Bogdan Marekha joins the group as a Humboldt fellow to study fundamentals of cellulose dissolution in ionic liquids.

Vasilis Balos, Mischa Bonn, and Johannes Hunger have a paper showing that Anionic and Cationic Hofmeister Effects Are Non-Additive for Guanidinium Salts accepted to PhysChemChemPhys more

Amelie Ehrhard joins the group as a PhD student to study thiourea-based catalysts.