Search Results - "Gescheidt, Georg"

Journal Article

Antioxidant Activity of Beer: An EPR Experiment for an Undergraduate Physical-Chemistry Laboratory

by Schmallegger, Max Gescheidt, Georg Published in Journal of chemical education (13.11.2018)

“...This laboratory experiment utilizes an exploration of the storage stability of beer to introduce basic aspects of electron-paramagnetic-resonance (EPR)...”

Fulltext

Journal Article

Benzil/triethylamine: a photo-reducing system for Cu2

by Schmallegger, Max Gescheidt, Georg Published in Monatshefte für Chemie (01.03.2018)

“...We have investigated the photo-induced reduction of Cu2+–Cu0 using benzil/triethylamine mixtures. The formation of elemental Cu is indicated by the appearance...”

Fulltext

Journal Article

In Situ Observation of Photoswitching by NMR Spectroscopy: A Photochemical Analogue to the Exchange Spectroscopy Experiment

by Stadler, Eduard Tassoti, Sebastian Lentes, Pascal Herges, Rainer Glasnov, Toma Zangger, Klaus Gescheidt, Georg Published in Analytical chemistry (Washington) (03.09.2019)

“...We present 1D and 2D NMR experiments that provide in situ insights into photoinduced isomerizations. Irradiation during the mixing period of an exchange...”

Fulltext

Journal Article

Tetraacylgermanes: Highly Efficient Photoinitiators for Visible‐Light‐Induced Free‐Radical Polymerization

by Radebner, Judith Eibel, Anna Leypold, Mario Gorsche, Christian Schuh, Lukas Fischer, Roland Torvisco, Ana Neshchadin, Dmytro Geier, Roman Moszner, Norbert Liska, Robert Gescheidt, Georg Haas, Michael Stueger, Harald Published in Angewandte Chemie (International ed.) (06.03.2017)

“...In this contribution a convenient synthetic method to obtain tetraacylgermanes Ge[C(O)R]4 (R=mesityl (1 a), phenyl (1 b)), a previously unknown class of highly...”

Fulltext

Journal Article

Enhanced Electrocatalytic N2 Reduction via Partial Anion Substitution in Titanium Oxide–Carbon Composites

by Qin, Qing Zhao, Yun Schmallegger, Max Heil, Tobias Schmidt, Johannes Walczak, Ralf Gescheidt‐Demner, Georg Jiao, Haijun Oschatz, Martin Published in Angewandte Chemie (International ed.) (09.09.2019)

“...The electrochemical conversion of N2 at ambient conditions using renewably generated electricity is an attractive approach for sustainable ammonia (NH3)...”

Fulltext

Journal Article

2‐Methoxyhydroquinone from Vanillin for Aqueous Redox‐Flow Batteries

by Schlemmer, Werner Nothdurft, Philipp Petzold, Alina Riess, Gisbert Frühwirt, Philipp Schmallegger, Max Gescheidt‐Demner, Georg Fischer, Roland Freunberger, Stefan A Kern, Wolfgang Spirk, Stefan Published in Angewandte Chemie (International ed.) (14.12.2020)

“...We show the synthesis of a redox‐active quinone, 2‐methoxy‐1,4‐hydroquinone (MHQ), from a bio‐based feedstock and its suitability as electrolyte in aqueous...”

Fulltext

Journal Article

Efficient Conversion of Light to Chemical Energy: Directional, Chiral Photoswitches with Very High Quantum Yields

by Moormann, Widukind Tellkamp, Tobias Stadler, Eduard Röhricht, Fynn Näther, Christian Puttreddy, Rakesh Rissanen, Kari Gescheidt, Georg Herges, Rainer Published in Angewandte Chemie (International ed.) (24.08.2020)

“...Photochromic systems have been used to achieve a number of engineering functions such as light energy conversion, molecular motors, pumps, actuators, and...”

Fulltext

Journal Article

Short‐lived Phenoxyl Radicals Formed from Green‐Tea Polyphenols and Highly Reactive Oxygen Species: An Investigation by Time‐Resolved EPR Spectroscopy

by Neshchadin, Dmytro Batchelor, Stephen N Bilkis, Itzhak Gescheidt, Georg Published in Angewandte Chemie (International ed.) (24.11.2014)

“...Polyphenols are effective antioxidants and their behavior has been studied in depth. However, a structural characterization of the species formed immediately...”

Fulltext

Journal Article

Speeding up NMR by in Situ Photo‐Induced Reversible Acceleration of T1‐Relaxation (PIRAT)

by Stadler, Eduard Dommaschk, Marcel Frühwirt, Philipp Herges, Rainer Gescheidt, Georg Published in Chemphyschem (05.03.2018)

“...Increasing the signal‐to‐noise ratio is one of the major goals in the field of NMR spectroscopy. In this proof of concept, we accelerate relaxation during an...”

Fulltext

Journal Article

Extending the Scope of Bis(acyl)phosphane Oxides: Additional Derivatives

by Eibel, Anna Schmallegger, Max Zalibera, Michal Huber, Alex Bürkl, Yasmin Grützmacher, Hansjörg Gescheidt, Georg Published in European journal of inorganic chemistry (10.05.2017)

“...A series of new bis(acyl)phosphane oxide (BAPO) photoinitiators has been synthesized and tested with respect to their efficiency in the initiation step of...”

Journal Article

Sensitivity Based Order Reduction of a Chemical Membrane Degradation Model for Low-Temperature Proton Exchange Membrane Fuel Cells

by Kregar, Ambroz Fruhwirt, Philipp Ritzberger, Daniel Jakubek, Stefan Katrasnik, Tomaz Gescheidt, Georg Published in Energies (Basel) (01.11.2020)

“...The chemical degradation of the perfluorinated sulfonic acid (PFSA) ion-exchange membrane as a result of an attack from a radical species, originating as a...”

Fulltext

Journal Article

Toward Matching Optically and NMR Active Volumes for Optimizing the Observation of Photo-Induced Reactions by NMR

by Stadler, Eduard Eibel, Anna Neshchadin, Dmytro Gescheidt, Georg Published in Zeitschrift für physikalische Chemie (Neue Folge) (01.03.2017)

“...In the recent years photo-induced reactions are becoming increasingly popular in many fields of chemistry comprising biological conversions,...”

Journal Article

Simple One‐Pot Syntheses of Water‐Soluble Bis(acyl)phosphane Oxide Photoinitiators and Their Application in Surfactant‐Free Emulsion Polymerization

by Müller, Georgina Zalibera, Michal Gescheidt, Georg Rosenthal, Amos Santiso‐Quinones, Gustavo Dietliker, Kurt Grützmacher, Hansjörg Published in Macromolecular rapid communications. (01.03.2015)

“...The sodium salt of the new bis(mesitoyl)phosphinic acid (BAPO‐OH) can be prepared in a very efficient one‐pot synthesis. It is well soluble in water and...”

Journal Article

Star‐shaped Polymers through Simple Wavelength‐Selective Free‐Radical Photopolymerization

by Eibel, Anna Fast, David E Sattelkow, Jürgen Zalibera, Michal Wang, Jieping Huber, Alex Müller, Georgina Neshchadin, Dmytro Dietliker, Kurt Plank, Harald Grützmacher, Hansjörg Gescheidt, Georg Published in Angewandte Chemie (International ed.) (06.11.2017)

“...Star‐shaped polymers represent highly desired materials in nanotechnology and life sciences, including biomedical applications (e.g., diagnostic imaging,...”

Fulltext

Journal Article

Tetraacylgermanes as highly efficient photoinitiators for visible light cured dimethacrylate resins and dental composites

by Moszner, Norbert Fischer, Urs Karl Lamparth, Iris Fässler, Pascal Radebner, Judith Eibel, Anna Haas, Michael Gescheidt, Georg Stueger, Harald Published in Journal of applied polymer science (15.04.2018)

“...ABSTRACT Tetrabenzoylgermane 1 and various substituted tetrabenzoylgermanes 2–7 were investigated as visible light (VL) photoinitiators (PIs) for dental...”

Journal Article

CIDNP as a tool for rapid rearrangements: New insights into cyclobutanoid 4‐center/3‐electron radical cations

by Neshchadin, Dmytro Gescheidt, Georg Published in Journal of physical organic chemistry (01.09.2013)

“...CIDNP has been often utilized as a mechanistic tool for radical reactions. Here, we show that detailed insights into the structure of carbon‐centered radical...”

Journal Article

Oxorhenium(V) Complexes with Phenolate–Oxazoline Ligands: Influence of the Isomeric Form on the O‑Atom-Transfer Reactivity

by Schachner, Jörg A Terfassa, Belina Peschel, Lydia M Zwettler, Niklas Belaj, Ferdinand Cias, Pawel Gescheidt, Georg Mösch-Zanetti, Nadia C Published in Inorganic chemistry (15.12.2014)

“...The bidentate phenolate–oxazoline ligands 2-(2′-hydroxyphenyl)-2-oxazoline (1a, Hoz) and 2-(4′,4′-dimethyl-3′,4′-dihydrooxazol-2′-yl)phenol (1b, Hdmoz) were...”

Fulltext

Journal Article

The Redox Chemistry of Mono‐ and Bis(acyl)phosphane Oxides

by Zalibera, Michal Stébé, Pierre‐Nicolas Dietliker, Kurt Grützmacher, Hansjörg Spichty, Martin Gescheidt, Georg Published in European journal of organic chemistry (01.01.2014)

“...Mono‐ and bis(acyl)phosphane oxides are usually utilized as photoinitiators for radical polymerizations. This manuscript reveals the electrochemically...”

Journal Article

2‐Methoxyhydroquinone from Vanillin for Aqueous Redox‐Flow Batteries

“...We show the synthesis of a redox‐active quinone, 2‐methoxy‐1,4‐hydroquinone (MHQ), from a bio‐based feedstock and its suitability as electrolyte in aqueous...”

Journal Article

Enhanced Electrocatalytic N2 Reduction via Partial Anion Substitution in Titanium Oxide–Carbon Composites

by Qin, Qing Zhao, Yun Schmallegger, Max Heil, Tobias Schmidt, Johannes Walczak, Ralf Gescheidt‐Demner, Georg Jiao, Haijun Oschatz, Martin Published in Angewandte Chemie (09.09.2019)

“...The electrochemical conversion of N2 at ambient conditions using renewably generated electricity is an attractive approach for sustainable ammonia (NH3)...”

1
2
3
4
5
6
7
8
9
10
11
Next »
[22]

Narrow search