Ralf Ludwig (R Ludwig)

ResearcherID ORCID

Publication Activity (10 Years)

Years Active: 2017-2024
Publications (10 Years): 53

Top Topics

Room Temperature

Magnetic Resonance

Molecular Dynamics

Top Venues

The journal of physical chemistry letters

Physical chemistry chemical physics : PCCP

The journal of physical chemistry. B

Chemphyschem : a European journal of chemical physics and physical chemistry

This page only lists publications with an associated author ORCID identifier.

Publications

Lasse Hunger, Ralf Ludwig, Yen-Ching Chuang, Hai-Chou Chang
Hydroxy-Functionalized Ionic Liquids under Pressure: The Influence on Hydrogen Bonding between Ions of Opposite and Like Charges. The journal of physical chemistry. B (2024)
Khalida Khalil, null Shahnaz, Ralf Ludwig, Ammar M Tighezza, Khurshid Ayub, Tariq Mahmood, Mazhar Amjad Gilani
Unraveling the role of superalkalis in modulating the static and dynamic hyperpolarizabilities of emerging calix[4]arenes. Physical chemistry chemical physics : PCCP 26 (8) (2024)
Lasse Hunger, Loai Al Sheakh, Sebastian Fritsch, Alexander Villinger, Ralf Ludwig, Payten Harville, Olivia C Moss, Anton Lachowicz, Mark A Johnson
Spectroscopic Evidence for Doubly Hydrogen-Bonded Cationic Dimers in the Solid, Liquid, and Gaseous Phases of Carboxyl-Functionalized Ionic Liquids. The journal of physical chemistry. B 128 (22) (2024)
Khalida Khalil, null Shahnaz, Ralf Ludwig, Ammar M Tighezza, Khurshid Ayub, Tariq Mahmood, Mazhar Amjad Gilani
Unraveling the role of superalkalis in modulating the static and dynamic hyperpolarizabilities of emerging calix[4]arenes. Physical chemistry chemical physics : PCCP (2024)
Khalida Khalil, null Shahnaz, Ralf Ludwig, Ammar M Tighezza, Khurshid Ayub, Tariq Mahmood, Mazhar Amjad Gilani
Unraveling the role of superalkalis in modulating the static and dynamic hyperpolarizabilities of emerging calix[4]arenes. Physical chemistry chemical physics : PCCP 26 (8) (2024)
Lasse Hunger, Ralf Ludwig, Yen-Ching Chuang, Hai-Chou Chang
Hydroxy-Functionalized Ionic Liquids under Pressure: The Influence on Hydrogen Bonding between Ions of Opposite and Like Charges. The journal of physical chemistry. B 128 (19) (2024)
Lasse Hunger, Loai Al Sheakh, Sebastian Fritsch, Alexander Villinger, Ralf Ludwig, Payten Harville, Olivia C Moss, Anton Lachowicz, Mark A Johnson
Spectroscopic Evidence for Doubly Hydrogen-Bonded Cationic Dimers in the Solid, Liquid, and Gaseous Phases of Carboxyl-Functionalized Ionic Liquids. The journal of physical chemistry. B (2024)
Alexander E Khudozhitkov, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
How Like-Charge Attraction Influences the Mobility of Cations in Hydroxyl-Functionalized Ionic Liquids. The journal of physical chemistry letters (2023)
Alexander E Khudozhitkov, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
How Like-Charge Attraction Influences the Mobility of Cations in Hydroxyl-Functionalized Ionic Liquids. The journal of physical chemistry letters (2023)
Alexander E Khudozhitkov, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
How Like-Charge Attraction Influences the Mobility of Cations in Hydroxyl-Functionalized Ionic Liquids. The journal of physical chemistry letters (2023)
Johanna Busch, David Kotwica, Loai Al Sheakh, Thomas F Headen, Tristan G A Youngs, Dietmar Paschek, Ralf Ludwig
Quantification and Distribution of Three Types of Hydrogen Bonds in Mixtures of an Ionic Liquid with the Hydrogen-Bond-Accepting Molecular Solvent DMSO Explored by Neutron Diffraction and Molecular Dynamics Simulations. The journal of physical chemistry letters (2023)
Alexander E Khudozhitkov, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
Ion Mobility in Hydroxy-Functionalized Ionic Liquids Depends on Cationic Clustering: Tracking the Alkyl Chain Length Behavior with Deuteron NMR Relaxation. The journal of physical chemistry. B (2023)
Alexander E Khudozhitkov, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
How Like-Charge Attraction Influences the Mobility of Cations in Hydroxyl-Functionalized Ionic Liquids. The journal of physical chemistry letters 14 (17) (2023)
Maria Asghar, Ahmed Lakhani, Misbah Asif, Nadeem S Sheikh, Muhammad Ali Hashmi, Ralf Ludwig, Hassan H Hammud, Khurshid Ayub
Chiral Recognition of Amino Acids Using CC2 Porous Organic Cages. The journal of physical chemistry. A (2023)
Johanna Busch, David Kotwica, Loai Al Sheakh, Thomas F Headen, Tristan G A Youngs, Dietmar Paschek, Ralf Ludwig
Quantification and Distribution of Three Types of Hydrogen Bonds in Mixtures of an Ionic Liquid with the Hydrogen-Bond-Accepting Molecular Solvent DMSO Explored by Neutron Diffraction and Molecular Dynamics Simulations. The journal of physical chemistry letters 14 (10) (2023)
Maria Asghar, Ahmed Lakhani, Misbah Asif, Nadeem S Sheikh, Muhammad Ali Hashmi, Ralf Ludwig, Hassan H Hammud, Khurshid Ayub
Chiral Recognition of Amino Acids Using CC2 Porous Organic Cages. The journal of physical chemistry. A 127 (19) (2023)
Peter Stange, Sergey P Verevkin, Ralf Ludwig
Combined Spectroscopic, Thermodynamic, and Theoretical Approach for Detecting and Quantifying Hydrogen Bonding and Dispersion Interaction in Ionic Liquids. Accounts of chemical research (2023)
Benjamin Golub, Daniel Ondo, Viviane Overbeck, Ralf Ludwig, Dietmar Paschek
Hydrogen bond redistribution effects in mixtures of protic ionic liquids sharing the same cation: non-ideal mixing with large negative mixing enthalpies. Physical chemistry chemical physics : PCCP 24 (24) (2022)
Sehrish Sarfaraz, Muhammad Yar, Muhammad Ans, Mazhar Amjad Gilani, Ralf Ludwig, Muhammad Ali Hashmi, Masroor Hussain, Shabbir Muhammad, Khurshid Ayub
Computational investigation of a covalent triazine framework (CTF-0) as an efficient electrochemical sensor. RSC advances 12 (7) (2022)
Alexander E Khudozhitkov, Peter Stange, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
The Influence of Deuterium Isotope Effects on Structural Rearrangements, Ensemble Equilibria, and Hydrogen Bonding in Protic Ionic Liquids. Chemphyschem : a European journal of chemical physics and physical chemistry 23 (23) (2022)
Lasse Hunger, Loai Al-Sheakh, Dzmitry H Zaitsau, Sergey P Verevkin, Andreas Appelhagen, Alexander Villinger, Ralf Ludwig
Dissecting Noncovalent Interactions in Carboxyl-Functionalized Ionic Liquids Exhibiting Double and Single Hydrogens Bonds Between Ions of Like Charge. Chemistry (Weinheim an der Bergstrasse, Germany) 28 (46) (2022)
Benjamin Golub, Daniel Ondo, Ralf Ludwig, Dietmar Paschek
Why Do Liquids Mix? The Mixing of Protic Ionic Liquids Sharing the Same Cation Is Apparently Driven by Enthalpy, Not Entropy. The journal of physical chemistry letters 13 (16) (2022)
Alexander E Khudozhitkov, Peter Stange, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
The Influence of Deuterium Isotope Effects on Structural Rearrangements, Ensemble Equilibria, and Hydrogen Bonding in Protic Ionic Liquids. Chemphyschem : a European journal of chemical physics and physical chemistry 23 (23) (2022)
Alexander E Khudozhitkov, Peter Stange, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
Structure, hydrogen bond dynamics and phase transition in a model ionic liquid electrolyte. Physical chemistry chemical physics : PCCP 24 (10) (2022)
Alexander E Khudozhitkov, Masaki Donoshita, Alexander G Stepanov, Frederik Philippi, Daniel Rauber, Rolf Hempelmann, Hiroshi Kitagawa, Daniil I Kolokolov, Ralf Ludwig
High-Temperature Quantum Tunneling and Hydrogen Bonding Rearrangements Characterize the Solid-Solid Phase Transitions in a Phosphonium-Based Protic Ionic Liquid. Chemistry (Weinheim an der Bergstrasse, Germany) 28 (23) (2022)
Loai Al Sheakh, Thomas Niemann, Alexander Villinger, Peter Stange, Dzmitry H Zaitsau, Anne Strate, Ralf Ludwig
Three in One: The Versatility of Hydrogen Bonding Interaction in Halide Salts with Hydroxy-Functionalized Pyridinium Cations. Chemphyschem : a European journal of chemical physics and physical chemistry 22 (18) (2021)
Jan Neumann, Ralf Ludwig, Dietmar Paschek
Hydrogen Bonds between Ions of Opposite and Like Charge in Hydroxyl-Functionalized Ionic Liquids: an Exhaustive Examination of the Interplay between Global and Local Motions and Intermolecular Hydrogen Bond Lifetimes and Kinetics. The journal of physical chemistry. B 125 (19) (2021)
Riko Siewert, Ralf Ludwig, Sergey P Verevkin
Non-covalent interactions in molecular systems: thermodynamic evaluation of the hydrogen bond strength in aminoalcohols. Physical chemistry chemical physics : PCCP 23 (44) (2021)
Benjamin Golub, Koichi Fumino, Peter Stange, Verlaine Fossog, Rolf Hempelmann, Daniel Ondo, Dietmar Paschek, Ralf Ludwig
Balance Between Contact and Solvent-Separated Ion Pairs in Mixtures of the Protic Ionic Liquid [Et3NH][MeSO3] with Water Controlled by Water Content and Temperature. The journal of physical chemistry. B 125 (17) (2021)
Majid Namayandeh Jorabchi, Ralf Ludwig, Dietmar Paschek
Quasi-Universal Solubility Behavior of Light Gases in Imidazolium-Based Ionic Liquids with Varying Anions: A Molecular Dynamics Simulation Study. The journal of physical chemistry. B 125 (6) (2021)
Jule Kristin Philipp, Sebastian Fritsch, Ralf Ludwig
Cyclic Octamer of Hydroxyl-functionalized Cations with Net Charge Q=+8e Kinetically Stabilized by a 'Molecular Island' of Cooperative Hydrogen Bonds. Chemphyschem : a European journal of chemical physics and physical chemistry 21 (21) (2020)
Alexander E Khudozhitkov, Thomas Niemann, Peter Stange, Masaki Donoshita, Alexander G Stepanov, Hiroshi Kitagawa, Daniil I Kolokolov, Ralf Ludwig
Freezing the Motion in Hydroxy-Functionalized Ionic Liquids-Temperature Dependent NMR Deuteron Quadrupole Coupling Constants for Two Types of Hydrogen Bonds Far below the Glass Transition. The journal of physical chemistry letters 11 (15) (2020)
Jan Neumann, Dietmar Paschek, Anne Strate, Ralf Ludwig
Kinetics of Hydrogen Bonding between Ions with Opposite and Like Charges in Hydroxyl-Functionalized Ionic Liquids. The journal of physical chemistry. B 125 (1) (2020)
Philipp Honegger, Viviane Overbeck, Anne Strate, Andreas Appelhagen, Marion Sappl, Esther Heid, Christian Schröder, Ralf Ludwig, Othmar Steinhauser
Understanding the Nature of Nuclear Magnetic Resonance Relaxation by Means of Fast-Field-Cycling Relaxometry and Molecular Dynamics Simulations-The Validity of Relaxation Models. The journal of physical chemistry letters 11 (6) (2020)
Thomas Niemann, Dzmitry H Zaitsau, Anne Strate, Peter Stange, Ralf Ludwig
Controlling "like-likes-like" charge attraction in hydroxy-functionalized ionic liquids by polarizability of the cations, interaction strength of the anions and varying alkyl chain length. Physical chemistry chemical physics : PCCP 22 (5) (2020)
Hua Li, Thomas Niemann, Ralf Ludwig, Rob Atkin
Effect of Hydrogen Bonding between Ions of Like Charge on the Boundary Layer Friction of Hydroxy-Functionalized Ionic Liquids. The journal of physical chemistry letters 11 (10) (2020)
Helen J Zeng, Fabian S Menges, Thomas Niemann, Anne Strate, Ralf Ludwig, Mark A Johnson
Chain Length Dependence of Hydrogen Bond Linkages between Cationic Constituents in Hydroxy-Functionalized Ionic Liquids: Tracking Bulk Behavior to the Molecular Level with Cold Cluster Ion Spectroscopy. The journal of physical chemistry letters 11 (3) (2020)
Vladimir N Emel'yanenko, Peter Stange, Joanna Feder-Kubis, Sergey P Verevkin, Ralf Ludwig
Dissecting intermolecular interactions in the condensed phase of ibuprofen and related compounds: the specific role and quantification of hydrogen bonding and dispersion forces. Physical chemistry chemical physics : PCCP 22 (9) (2020)
Dzmitry H Zaitsau, Vladimir N Emel'yanenko, Peter Stange, Sergey P Verevkin, Ralf Ludwig
Dissecting the Vaporization Enthalpies of Ionic Liquids by Exclusively Experimental Methods: Coulomb Interaction, Hydrogen Bonding, and Dispersion Forces. Angewandte Chemie (International ed. in English) 58 (25) (2019)
Thomas Niemann, Jan Neumann, Peter Stange, Sabrina Gärtner, Tristan G A Youngs, Dietmar Paschek, Gregory G Warr, Rob Atkin, Ralf Ludwig
The Double-Faced Nature of Hydrogen Bonding in Hydroxy-Functionalized Ionic Liquids Shown by Neutron Diffraction and Molecular Dynamics Simulations. Angewandte Chemie (International ed. in English) 58 (37) (2019)
Alexander E Khudozhitkov, Jan Neumann, Thomas Niemann, Dzmitry H Zaitsau, Peter Stange, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
Hydrogen Bonding Between Ions of Like Charge in Ionic Liquids Characterized by NMR Deuteron Quadrupole Coupling Constants-Comparison with Salt Bridges and Molecular Systems. Angewandte Chemie (International ed. in English) 58 (49) (2019)
Jan Neumann, Benjamin Golub, Lisa-Marie Odebrecht, Ralf Ludwig, Dietmar Paschek
Revisiting imidazolium based ionic liquids: Effect of the conformation bias of the [NTf2] anion studied by molecular dynamics simulations. The Journal of chemical physics 148 (19) (2018)
Alexander E Khudozhitkov, Peter Stange, Anne-Marie Bonsa, Viviane Overbeck, Andreas Appelhagen, Alexander G Stepanov, Daniil I Kolokolov, Dietmar Paschek, Ralf Ludwig
Dynamical heterogeneities in ionic liquids as revealed from deuteron NMR. Chemical communications (Cambridge, England) 54 (25) (2018)
Anne Strate, Thomas Niemann, Ralf Ludwig
Controlling the kinetic and thermodynamic stability of cationic clusters by the addition of molecules or counterions. Physical chemistry chemical physics : PCCP 19 (29) (2018)
Thomas Niemann, Dimitri Zaitsau, Anne Strate, Alexander Villinger, Ralf Ludwig
Cationic clustering influences the phase behaviour of ionic liquids. Scientific reports 8 (1) (2018)
Thomas Niemann, Anne Strate, Ralf Ludwig, Helen J Zeng, Fabian S Menges, Mark A Johnson
Spectroscopic Evidence for an Attractive Cation-Cation Interaction in Hydroxy-Functionalized Ionic Liquids: A Hydrogen-Bonded Chain-like Trimer. Angewandte Chemie (International ed. in English) 57 (47) (2018)
Nafees Iqbal, Syed Abid Ali, Iqra Munir, Saima Khan, Khurshid Ayub, Mariya Al Rashida, Muhammad Islam, Zahid Shafiq, Ralf Ludwig, Abdul Hameed
Acridinedione as selective flouride ion chemosensor: a detailed spectroscopic and quantum mechanical investigation. RSC advances 8 (4) (2018)
Thomas Niemann, Peter Stange, Anne Strate, Ralf Ludwig
Like-likes-Like: Cooperative Hydrogen Bonding Overcomes Coulomb Repulsion in Cationic Clusters with Net Charges up to Q=+6e. Chemphyschem : a European journal of chemical physics and physical chemistry 19 (14) (2018)
Steffen Fischer, Arend Rösel, Anja Kammer, Enrico Barsch, Roland Schoch, Henrik Junge, Matthias Bauer, Matthias Beller, Ralf Ludwig
Diferrate [Fe2 (CO)6 (μ-CO){μ-P(aryl)2 }]- as Self-Assembling Iron/Phosphor-Based Catalyst for the Hydrogen Evolution Reaction in Photocatalytic Proton Reduction-Spectroscopic Insights. Chemistry (Weinheim an der Bergstrasse, Germany) 24 (60) (2018)
Mathias Sawall, Stella Schmode, Henning Schröder, Ralf Ludwig, Klaus Neymeyr
A chemometric study in the area of feasible solution of an acid-base titration of N -methyl-6-oxyquinolone. RSC advances 8 (18) (2018)
Anne Strate, Jan Neumann, Viviane Overbeck, Anne-Marie Bonsa, Dirk Michalik, Dietmar Paschek, Ralf Ludwig
Rotational and translational dynamics and their relation to hydrogen bond lifetimes in an ionic liquid by means of NMR relaxation time experiments and molecular dynamics simulation. The Journal of chemical physics 148 (19) (2018)
Eva Perlt, Michael von Domaros, Barbara Kirchner, Ralf Ludwig, Frank Weinhold
Predicting the Ionic Product of Water. Scientific reports 7 (1) (2017)
Alexander E Khudozhitkov, Peter Stange, Benjamin Golub, Dietmar Paschek, Alexander G Stepanov, Daniil I Kolokolov, Ralf Ludwig
Characterization of Doubly Ionic Hydrogen Bonds in Protic Ionic Liquids by NMR Deuteron Quadrupole Coupling Constants: Differences to H-bonds in Amides, Peptides, and Proteins. Angewandte Chemie (International ed. in English) 56 (45) (2017)