Günther Wittstock
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View article: Functionalized melanin for enhanced energy storage in aqueous and ionic liquid electrolytes
Functionalized melanin for enhanced energy storage in aqueous and ionic liquid electrolytes Open
Eumelanin is an interesting functional material for electrochemical applications due to its quinone/hydroquinone redox equilibrium. One major issue in the eumelanin film processing is the lack of solubility in polar solvents. In this study…
View article: A Key to Material's Stability: Tuning Pyrolysis Temperature in SnS <i> <sub>x</sub> </i> @C Anodes for Sodium‐Ion Batteries
A Key to Material's Stability: Tuning Pyrolysis Temperature in SnS <i> <sub>x</sub> </i> @C Anodes for Sodium‐Ion Batteries Open
Developing robust and efficient anodes is essential for advancing sodium‐ion battery technology. Herein, a systematic investigation of SnS x @C composites prepared at different pyrolysis temperatures to elucidate how their structural, surf…
View article: Long-term corrosion studies of CrCoNi and CrMnFeCoNi in sulfuric acid
Long-term corrosion studies of CrCoNi and CrMnFeCoNi in sulfuric acid Open
This study investigates the long-term corrosion behavior of CrCoNi and CrMnFeCoNi MPEAs over 28 d in 1 M H 2 SO 4 . Corrosion progression and passive film evolution were analyzed using open circuit potential measurements, electrochemical i…
View article: Expression of concern: Localized electropolymerization on oxidized boron-doped diamond electrodes modified with pyrrolyl units
Expression of concern: Localized electropolymerization on oxidized boron-doped diamond electrodes modified with pyrrolyl units Open
Expression of concern for ‘Localized electropolymerization on oxidized boron-doped diamond electrodes modified with pyrrolyl units’ by Paolo Actis et al. , Phys. Chem. Chem. Phys. , 2006, 8 , 4924–4931, https://doi.org/10.1039/B611735J.
View article: H/D Isotope Effects in the Electrochemistry of Electrochromic Iron Hexacyanoruthenate
H/D Isotope Effects in the Electrochemistry of Electrochromic Iron Hexacyanoruthenate Open
The electrochemical deposition of iron hexacyanoruthenate (Fe−HCR) on gold electrodes was studied in electrolytes prepared with light and heavy water. Cyclic voltammetry of the material during preparation and after transfer to a precursor‐…
View article: Broadening the Realm of Nanoporous Gold Catalysts: Preparation and Properties When Emanating from AuCu as Parent Alloy
Broadening the Realm of Nanoporous Gold Catalysts: Preparation and Properties When Emanating from AuCu as Parent Alloy Open
Nanoporous gold (npAu) attracted increasing attention over the last 20 years as a highly active and selective oxidation catalyst in particular at low temperatures. Previous research mainly focused on npAu that was fabricated by corrosive d…
View article: Coupled Electron‐ and Ion‐Transfer Processes at a Liquid/Liquid Interface Decorated with Photoactive Nanomaterials
Coupled Electron‐ and Ion‐Transfer Processes at a Liquid/Liquid Interface Decorated with Photoactive Nanomaterials Open
The influence of the ion transfer on photoinduced electron transfer (ET) reactions was studied on the surface of hyperbranched semiconducting BiVO 4 particles spontaneously adsorbed at the liquid‐liquid (L/L) interface between an aqueous L…
View article: Coupled Electron‐ and Ion‐Transfer Processes at a Liquid/Liquid Interface Decorated with Photoactive Nanomaterials
Coupled Electron‐ and Ion‐Transfer Processes at a Liquid/Liquid Interface Decorated with Photoactive Nanomaterials Open
The influence of the ion transfer on photoinduced electron transfer (ET) reactions was studied on the surface of hyperbranched semiconducting BiVO 4 particles spontaneously adsorbed at the liquid‐liquid (L/L) interface between an aqueous L…
View article: Graphisches Inhaltsverzeichnis: Angew. Chem. 18/2024
Graphisches Inhaltsverzeichnis: Angew. Chem. 18/2024 Open
…ofcatalytic DNAzyme activity has been achieved in the Research Article (e202404064) by Lele Li, Mengyuan Li et al.Molecular weaving activatable DNAzyme into the skeleton of tetrahedral DNAnanocages not only enables efficient intracellular…
View article: Transpassive Metal Dissolution vs. Oxygen Evolution Reaction: Implication for Alloy Stability and Electrocatalysis
Transpassive Metal Dissolution vs. Oxygen Evolution Reaction: Implication for Alloy Stability and Electrocatalysis Open
Multi‐principal element alloys (MPEAs) are gaining interest in corrosion and electrocatalysis research due to their electrochemical stability across a broad pH range and the design flexibility they offer. Using the equimolar CrCoNi alloy, …
View article: Transpassive Metallauflösung vs. Sauerstoffentwicklung: Auswirkungen auf Legierungsstabilität und Elektrokatalyse
Transpassive Metallauflösung vs. Sauerstoffentwicklung: Auswirkungen auf Legierungsstabilität und Elektrokatalyse Open
Multi‐Hauptelement‐Legierungen (MPEAs) gewinnen in der Korrosions‐ und Elektrokatalyseforschung aufgrund ihrer elektrochemischen Stabilität über einen breiten pH‐Bereich und der Vielfalt der möglichen chemischen Zusammensetzungen zunehmend…
View article: An electrically conducting 3D coronene-based metal–organic framework
An electrically conducting 3D coronene-based metal–organic framework Open
A novel electrically conducting cubic mesoporous metal–organic framework (MOF), consisting of hexahydroxy- cata -hexabenzocoronene ( c -HBC) and Fe III ions is presented.
View article: Controlled Mechanical Actuation of Adsorbed Forisome Mechanoproteins: A Step Toward Biomolecular Devices
Controlled Mechanical Actuation of Adsorbed Forisome Mechanoproteins: A Step Toward Biomolecular Devices Open
Forisomes are giant structural plant mechanoproteins that reversibly undergo a transition from a longitudinally expanded to a contracted (dispersed) state. This transition is driven by a change in the concentration of Ca 2+ ions. Artificia…
View article: Enhanced Photoactivity by Doping of Cu–W Oxide-Based Photoanodes by Trivalent Al<sup>3+</sup>, Ga<sup>3+</sup>, and In<sup>3+</sup> Ions─A Combinatorial Study
Enhanced Photoactivity by Doping of Cu–W Oxide-Based Photoanodes by Trivalent Al<sup>3+</sup>, Ga<sup>3+</sup>, and In<sup>3+</sup> Ions─A Combinatorial Study Open
Metal oxide libraries for the photoelectrochemical oxygen evolution reaction (OER) based on CuWOx with different third and fourth elements were prepared by calcination of inkjet-printed precursor solution in compositional arrays and screen…
View article: Unidirectional Current in Layered Metal Hexacyanometallate Thin Films: Implication for Alternative Wet-Processed Electronic Materials
Unidirectional Current in Layered Metal Hexacyanometallate Thin Films: Implication for Alternative Wet-Processed Electronic Materials Open
Rectifying behavior of alternative electronic materials is demonstrated with layered structures of a crystalline coordination network whose mixed ionic and electronic conductivity can be manipulated by switching the redox state of coordina…
View article: Metal Oxide Protection Layers for Enhanced Stability and Activity of WO<sub>3</sub> Photoanodes in Alkaline Media
Metal Oxide Protection Layers for Enhanced Stability and Activity of WO<sub>3</sub> Photoanodes in Alkaline Media Open
Photoelectrochemical water splitting using complex oxides has been envisioned as an avenue toward sustainable fuel production. The reaction is usually performed in neutral or alkaline solutions to enable the use of earth-abundant transitio…
View article: Letter to the editor
Letter to the editor Open
View article: Covalent Modification of Nanoparticle‐Imprinted Matrices for Selective Nanoparticle Recognition
Covalent Modification of Nanoparticle‐Imprinted Matrices for Selective Nanoparticle Recognition Open
Nanoparticle‐imprinted matrices (NAIMs) were prepared using ammonium‐terminated SiO 2 nanoparticles (NPs) as templates initially attached to activated glassy carbon. After electrodeposition of a matrix of polyplumbagin and polyphenol, the …
View article: Nanoporous Gold: From Structure Evolution to Functional Properties in Catalysis and Electrochemistry
Nanoporous Gold: From Structure Evolution to Functional Properties in Catalysis and Electrochemistry Open
Nanoporous gold (NPG) is characterized by a bicontinuous network of nanometer-sized metallic struts and interconnected pores formed spontaneously by oxidative dissolution of the less noble element from gold alloys. The resulting material e…
View article: Dry Synthesis of Pure and Ultrathin Nanoporous Metallic Films
Dry Synthesis of Pure and Ultrathin Nanoporous Metallic Films Open
Nanoporous metals possess unique properties attributed to their high surface area and interconnected nanoscale ligaments. They are mostly fabricated by wet synthetic methods that are not universal to various metals and not free from impuri…
View article: Front Cover: Dispensing Single Drops as Electrochemical Reactors (ChemElectroChem 8/2022)
Front Cover: Dispensing Single Drops as Electrochemical Reactors (ChemElectroChem 8/2022) Open
The Front Cover illustrates a single microscopic drop which is generated and directed to a reactive surface, where the liquid content is detected. More information can be found in the Research Article by S. Rastgar et al.
View article: A new programmable dipping robot
A new programmable dipping robot Open
A new dipping robot is presented for the execution of layer‐by‐layer (LbL) deposition procedures for the modification of electrode surfaces. It is composed of low‐budget parts broadly available three‐dimensional (3D) printer. New extra har…
View article: Dispensing Single Drops as Electrochemical Reactors
Dispensing Single Drops as Electrochemical Reactors Open
A strategy is proposed to generate single microdrops with femtoliter to microliter volumes as a liquid reactor and to guide them towards a reactive surface within a viscous carrier liquid. Reactions of the drop content with the surface are…
View article: CSD 1902760: Experimental Crystal Structure Determination
CSD 1902760: Experimental Crystal Structure Determination Open
View article: CSD 1890839: Experimental Crystal Structure Determination
CSD 1890839: Experimental Crystal Structure Determination Open
View article: Highly stable, reactive and ultrapure nanoporous metallic films
Highly stable, reactive and ultrapure nanoporous metallic films Open
Nanoporous metals possess unique properties attributed to their high surface area and interconnected nanoscale ligaments. They are mostly fabricated by wet synthetic methods involving solution-based dealloying processes whose purity is com…
View article: Dry Synthesis of Nanoporous Metallic Films
Dry Synthesis of Nanoporous Metallic Films Open
Nanoporous metals possess unique properties attributed to their high surface area and interconnected nanoscale ligaments. They are mostly fabricated by wet synthetic methods involving solution-based dealloying processes whose purity is com…
View article: Modification and Patterning of Self‐Assembled Monolayers Using Electrogenerated Etchants and Homogeneous Scavenging Reactions in a Scanning Electrochemical Microscope
Modification and Patterning of Self‐Assembled Monolayers Using Electrogenerated Etchants and Homogeneous Scavenging Reactions in a Scanning Electrochemical Microscope Open
Self‐assembled monolayers (SAMs) of oligoethylene glycol (OEG)‐terminated alkanethiolates on gold, which are used to control protein adsorption and cell adhesion, were patterned by reaction with Br 2 /HOBr electrogenerated at a microelectr…
View article: CCDC 2069404: Experimental Crystal Structure Determination
CCDC 2069404: Experimental Crystal Structure Determination Open
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available …
View article: Cover Picture: An Electrically Conducting Three‐Dimensional Iron–Catecholate Porous Framework (Angew. Chem. Int. Ed. 33/2021)
Cover Picture: An Electrically Conducting Three‐Dimensional Iron–Catecholate Porous Framework (Angew. Chem. Int. Ed. 33/2021) Open
Fe-HHTP-MOF , a unique cubic metal–organic framework (MOF) comprising hexahydroxytriphenylene (HHTP) supertetrahedral units and FeIII ions arranged in a diamond topology, is reported by Thomas Bein, Dana D. Medina et al. in their Research …