Works by Hempelmann, Rolf
Results: 55
Cover Feature: High‐Temperature Quantum Tunneling and Hydrogen Bonding Rearrangements Characterize the Solid‐Solid Phase Transitions in a Phosphonium‐Based Protic Ionic Liquid (Chem. Eur. J. 23/2022).
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- Chemistry - A European Journal, 2022, v. 28, n. 23, p. 1, doi. 10.1002/chem.202200963
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High‐Temperature Quantum Tunneling and Hydrogen Bonding Rearrangements Characterize the Solid‐Solid Phase Transitions in a Phosphonium‐Based Protic Ionic Liquid.
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- Chemistry - A European Journal, 2022, v. 28, n. 23, p. 1, doi. 10.1002/chem.202200257
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High-Performance Low-Temperature Li<sup>+</sup> Intercalation in Disordered Rock-Salt Li-Cr-V Oxyfluorides.
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- ChemElectroChem, 2016, v. 3, n. 6, p. 892, doi. 10.1002/celc.201600033
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Photometrical Determination of the State-of-Charge in Vanadium Redox Flow Batteries Part II: In Combination with Open-Circuit-Voltage.
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- Zeitschrift für Physikalische Chemie, 2019, v. 233, n. 12, p. 1695, doi. 10.1515/zpch-2019-1380
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Photometrical Determination of the State-of-Charge in Vanadium Redox Flow Batteries Part I: In Combination with Potentiometric Titration.
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- Zeitschrift für Physikalische Chemie, 2019, v. 233, n. 12, p. 1683, doi. 10.1515/zpch-2019-1379
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Effect of Moisture on Methane Permeation Through Fermenter Covering Films in Biogas Plants.
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- Zeitschrift für Physikalische Chemie, 2018, v. 232, n. 5-6, p. 603, doi. 10.1515/zpch-2017-1022
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Electrochemical Lignin Degradation in Ionic Liquids on Ternary Mixed Metal Electrodes.
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- Zeitschrift für Physikalische Chemie, 2018, v. 232, n. 2, p. 189, doi. 10.1515/zpch-2017-0951
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Multiple Ether‐Functionalized Phosphonium Ionic Liquids as Highly Fluid Electrolytes.
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- ChemPhysChem, 2019, v. 20, n. 3, p. 443, doi. 10.1002/cphc.201800939
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Ion Pairing in Protic Ionic Liquids Probed by Far-Infrared Spectroscopy: Effects of Solvent Polarity and Temperature.
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- ChemPhysChem, 2014, v. 15, n. 12, p. 2604, doi. 10.1002/cphc.201402205
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Pairing nitroxyl radical and phenazine with electron-withdrawing/-donating substituents in "water-in-ionic liquid" for high-voltage aqueous redox flow batteries.
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- Green Energy & Environment, 2024, v. 9, n. 4, p. 713, doi. 10.1016/j.gee.2022.09.005
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Low-Frequency Vibrational Modes of Protic Molten Salts and Ionic Liquids: Detecting and Quantifying Hydrogen Bonds.
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- Angewandte Chemie International Edition, 2012, v. 51, n. 25, p. 6236, doi. 10.1002/anie.201200508
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Electrostatic boosting of ionic dye pollutant removal from aquatic environment using a single electrode photoreactor.
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- NPJ Clean Water, 2023, v. 6, n. 1, p. 1, doi. 10.1038/s41545-023-00230-4
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Interest of the Sol-Gel Approach for Multiscale Tailoring of Porous Bioelectrode Surfaces.
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- Electroanalysis, 2013, v. 25, n. 3, p. 621, doi. 10.1002/elan.201200319
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Das Schülerlabor als Ort der Sprachentwicklung Sprachsensibler Unterricht rund um die Süßungsmittel.
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- Chemkon - Chemie Konkret, 2020, v. 27, n. 1, p. 7, doi. 10.1002/ckon.201800075
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Omega-3-Fettsäuren in Schülerlabor und Unterricht.
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- Chemkon - Chemie Konkret, 2017, v. 24, n. 5, p. 391, doi. 10.1002/ckon.201710309
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Agglomeration of nano-MgAl[sub2]O[sub4] spinel from microemulsion and CVD techniques.
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- Journal of Applied Crystallography, 2000, v. 33, n. 3, p. 507, doi. 10.1107/S002188989901540X
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The Interplay of Hydrogen Bonding and Multiple Metal Binding - A New Cyclic Polyaminopolyalcohol Ligand as Building Block for the Construction of Microporous, Supramolecular Networks.
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- European Journal of Inorganic Chemistry, 2012, v. 2012, n. 1, p. 31, doi. 10.1002/ejic.201100914
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Optical and magnetic properties of Cu-doped ZnO nanoparticles.
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- Journal of Materials Science: Materials in Electronics, 2013, v. 24, n. 8, p. 2846, doi. 10.1007/s10854-013-1181-7
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Proton diffusivity in the BaZr<sub>0.9</sub>Y<sub>0.1</sub>O<sub>3−δ</sub> proton conductor.
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- Journal of Applied Electrochemistry, 2009, v. 39, n. 4, p. 471, doi. 10.1007/s10800-008-9667-3
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Ein Lernort für unsere Zukunft.
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- Nachrichten aus der Chemie, 2011, v. 59, n. 2, p. 103, doi. 10.1002/nadc.201176612
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Synthesis and electrochemistry of remotely thioether‐functionalized disilenes.
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- Zeitschrift für Anorganische und Allgemeine Chemie, 2021, v. 647, n. 18, p. 1674, doi. 10.1002/zaac.202100161
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High‐Temperature Polymer Electrolyte Fuel Cells Based on Protic Ionic Liquids.
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- Fuel Cells, 2024, v. 24, n. 5, p. 1, doi. 10.1002/fuce.202300213
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Statistical contact angle analyses: ‘slow moving’ drops on inclining flat mono-aminopropylsiloxane surfaces.
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- Journal of Adhesion Science & Technology, 2015, v. 29, n. 17, p. 1796, doi. 10.1080/01694243.2014.976000
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Phosphonium-Based Polyelectrolytes: Preparation, Properties, and Usage in Lithium-Ion Batteries.
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- Polymers (20734360), 2023, v. 15, n. 13, p. 2920, doi. 10.3390/polym15132920
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Nafion membranes with a sulfonated organic additive for the use in vanadium redox flow batteries.
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- Journal of Applied Polymer Science, 2019, v. 136, n. 21, p. N.PAG, doi. 10.1002/app.47547
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Novel Phosphonium-Based Ionic Liquid Electrolytes for Battery Applications.
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- Molecules, 2022, v. 27, n. 15, p. 4729, doi. 10.3390/molecules27154729
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3D Nanostructured Multielectrode Arrays: Fabrication, Electrochemical Characterization, and Evaluation of Cell–Electrode Adhesion.
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- Advanced Materials Technologies, 2019, v. 4, n. 2, p. N.PAG, doi. 10.1002/admt.201800436
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Front-End-of-Line Integration of Graphene Oxide for Graphene-Based Electrical Platforms.
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- Advanced Materials Technologies, 2018, v. 3, n. 4, p. 1, doi. 10.1002/admt.201700318
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Experimental Investigation of Dynamic Contact Angles on Horizontal and Inclined Surfaces Part II: Rough Homogenous Surfaces.
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- Zeitschrift für Physikalische Chemie, 2014, v. 228, n. 6/7, p. 629, doi. 10.1515/zpch-2014-0484
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Experimental Investigation of Dynamic Contact Angles on Horizontal and Inclined Surfaces Part I: Flat Silicon Oxide Surfaces.
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- Zeitschrift für Physikalische Chemie, 2014, v. 228, n. 1, p. 11, doi. 10.1515/zpch-2014-0443
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On the Catalytic Activity of Ceria for Direct Carbon Conversion in a SOFC.
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- Zeitschrift für Physikalische Chemie, 2013, v. 227, n. 12, p. 1767, doi. 10.1524/zpch.2013.0422
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Characterization of Nanoscale Titanium Nitride Dispersions by Small-Angle Neutron Scattering.
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- Journal of the American Ceramic Society, 1998, v. 81, n. 12, p. 3313, doi. 10.1111/j.1151-2916.1998.tb02773.x
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Shedding light on the structures of lignin compounds: photo-oxidation under artificial UV light and characterization by high resolution mass spectrometry.
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- Analytical & Bioanalytical Chemistry, 2016, v. 408, n. 28, p. 8203, doi. 10.1007/s00216-016-9928-7
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Two-dimensional mass defect matrix plots for mapping genealogical links in mixtures of lignin depolymerisation products.
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- Analytical & Bioanalytical Chemistry, 2016, v. 408, n. 18, p. 4835, doi. 10.1007/s00216-016-9598-5
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Energetik der Anion-Kation-Wechselwirkung in protischen ionischen Flüssigkeiten.
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- Angewandte Chemie, 2013, v. 125, n. 8, p. 2425, doi. 10.1002/ange.201207065
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Niederfrequente Schwingungsmoden protischer geschmolzener Salze und ionischer Flüssigkeiten: Nachweis und Quantifizierung von Wasserstoffbrücken.
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- Angewandte Chemie, 2012, v. 124, n. 25, p. 6340, doi. 10.1002/ange.201200508
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Kontrollierte Mesostrukturierung und Biofunktionalisierung von Gold zur Erhöhung der ElektroaktivitätDiese Arbeit wurde im Rahmen des SFB 277 durch die DFG und den DAAD unterstützt. Die Autoren danken dem...
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- Angewandte Chemie, 2006, v. 118, n. 8, p. 1340, doi. 10.1002/ange.200503292
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Influence of Water on Tribolayer Growth When Lubricating Steel with a Fluorinated Phosphonium Dicyanamide Ionic Liquid.
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- Lubricants (2075-4442), 2019, v. 7, n. 3, p. 27, doi. 10.3390/lubricants7030027
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Structure-Property Relation of Trimethyl Ammonium Ionic Liquids for Battery Applications.
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- Applied Sciences (2076-3417), 2021, v. 11, n. 12, p. 5679, doi. 10.3390/app11125679
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Poly(dimethylaminoethylmethacryloylpropanesulfonate)‐suitable polymer additive for pulsed electrodeposition of nanocrystalline nickel.
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- Journal of Applied Polymer Science, 2006, v. 102, n. 3, p. 2967
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Steuerung der subtilen Energiebalance in protischen ionischen Flüssigkeiten: Dispersionskräfte im Wettstreit mit Wasserstoffbrücken.
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- Angewandte Chemie, 2015, v. 127, n. 9, p. 2834, doi. 10.1002/ange.201411509
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Innentitelbild: Steuerung der subtilen Energiebalance in protischen ionischen Flüssigkeiten: Dispersionskräfte im Wettstreit mit Wasserstoffbrücken (Angew. Chem. 9/2015).
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- Angewandte Chemie, 2015, v. 127, n. 9, p. 2594, doi. 10.1002/ange.201500551
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Gleichgewicht zwischen Kontakt- und solvensseparierten Ionenpaaren in Mischungen von protischen ionischen Flüssigkeiten und molekularen Lösungsmitteln durch Polarität kontrolliert.
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- Angewandte Chemie, 2013, v. 125, n. 47, p. 12667, doi. 10.1002/ange.201303944
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Nanonickel Coated Aluminum Foam for Enhanced Impact Energy Absorption.
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- Advanced Engineering Materials, 2011, v. 13, n. 1/2, p. 23, doi. 10.1002/adem.201000190
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Synthesis and characterization of superparamagnetic nanoparticles coated with fluorescent gold nanoclusters.
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- Journal of Nanoparticle Research, 2012, v. 14, n. 2, p. 1, doi. 10.1007/s11051-012-0727-6
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Tailored Mesostructuring and Biofunctionalization of Gold for Increased ElectroactivityFinancial support by the DFG (SFB277), the DAAD, and the CNRS through the “Programme Matériaux” (A.K. and S.R.) is gratefully acknowledged. The authors are indebted to the French Ministry of Research for a Cotutelle grant and the French–British Alliance programme for supporting this collaboration. We also thank Prof. Frank Mücklich and Alexandra Velichko from the Materials Science Department of Saarland University for ion-beam cuts and SEM micrographs.
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- Angewandte Chemie International Edition, 2006, v. 45, n. 8, p. 1317, doi. 10.1002/anie.200503292
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Electrodeposition of Nanocrystalline Metals and Alloys from Ionic Liquids.
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- Angewandte Chemie International Edition, 2003, v. 42, n. 29, p. 3428, doi. 10.1002/anie.200350912
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Immobilized Highly Charged Colloidal Crystals: A New Route to Three-Dimensional Mesoscale Structured Materials.
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- Angewandte Chemie International Edition, 2002, v. 41, n. 1, p. 102, doi. 10.1002/1521-3773(20020104)41:1<102::AID-ANIE102>3.0.CO;2-6
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Covalent Surface Functionalization and Self-Organization of Silica Nanoparticles.
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- Angewandte Chemie International Edition, 1999, v. 38, n. 9, p. 1297, doi. 10.1002/(SICI)1521-3773(19990503)38:9<1297::AID-ANIE1297>3.0.CO;2-9
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Elektrochemische Abscheidung nanokristalliner Metalle und Legierungen aus ionischen Flüssigkeiten.
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- Angewandte Chemie, 2003, v. 115, n. 29, p. 3550, doi. 10.1002/ange.200350912
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