Josef Breu
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View article: A practical approach to thickness-dependent cell constant correction for coplanar or interdigitated electrodes
A practical approach to thickness-dependent cell constant correction for coplanar or interdigitated electrodes Open
Coplanar microelectrodes, particularly interdigitated electrodes (IDEs), are widely employed in electrochemical sensing owing to low cost, scalable fabrication, and high surface sensitivity. However, accurate and quantitative interpretatio…
View article: Ion and Solvent Dynamics in Charged 2D Clay Nanoslits with Unprecedented Ångström‐Precise Slit Height Control
Ion and Solvent Dynamics in Charged 2D Clay Nanoslits with Unprecedented Ångström‐Precise Slit Height Control Open
_Nanoconfinement by layered silicates has been claimed to deliver superionic conductivity as needed for many electrochemical applications. Unraveling governing principles of solvent and ion dynamics within charged 2D nanochannels requires …
View article: Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials
Tuning the Dielectric Properties of Individual Clay Nanosheets by Interlayer Composition: Toward Nano‐Electret Materials Open
To exploit the full potential of clays for electronic applications, a deeper understanding of how their dielectric properties can be tuned in a defined manner is essential. So far, most attention has been paid to the surface chemistry of c…
View article: Seawater to Sustainable Fuel: Sunlight-Driven Green Hydro-gen Generation with an Atomically Dispersed Photocatalyst
Seawater to Sustainable Fuel: Sunlight-Driven Green Hydro-gen Generation with an Atomically Dispersed Photocatalyst Open
Green hydrogen is widely regarded as a key to a sustainable future, offering a clean and flexible fuel option for de-carbonizing the energy, transport, and industrial sectors. While photocatalytic approaches are known for generating hydrog…
View article: Cation Vacancies in Ti‐Deficient TiO<sub>2</sub> Nanosheets Enable Highly Stable Trapping of Pt Single Atoms for Persistent Photocatalytic Hydrogen Evolution
Cation Vacancies in Ti‐Deficient TiO<sub>2</sub> Nanosheets Enable Highly Stable Trapping of Pt Single Atoms for Persistent Photocatalytic Hydrogen Evolution Open
The stabilization of single‐atom catalysts on semiconductor substrates is pivotal for advancing photocatalysis. TiO 2 , a widely employed photocatalyst, typically stabilizes single atoms at oxygen vacancies—sites that are accessible but pr…
View article: Stiff and self-healing hydrogels by polymer entanglements in co-planar nanoconfinement
Stiff and self-healing hydrogels by polymer entanglements in co-planar nanoconfinement Open
Many biological tissues are mechanically strong and stiff but can still heal from damage. By contrast, synthetic hydrogels have not shown comparable combinations of properties, as current stiffening approaches inevitably suppress the requi…
View article: Tunable mechanical properties and phase transitions in nanoconfined polyzwitterionic UCST hydrogels
Tunable mechanical properties and phase transitions in nanoconfined polyzwitterionic UCST hydrogels Open
Polyzwitterionic UCST hydrogels confined within hectorite nanostructures exhibit enhanced strength and tunable phase transitions dependent on thermal history, broadening their applications in smart soft materials.
View article: Liquid-Crystalline Photonic Sandwich: Electroresponsive Colloids of Clay Nanosheets Loading Photofunctional Dyes
Liquid-Crystalline Photonic Sandwich: Electroresponsive Colloids of Clay Nanosheets Loading Photofunctional Dyes Open
Colloidal clay nanosheets obtained by the delamination of layered crystals of smectite-type clay minerals in water form liquid crystals because of their shape anisotropy. Loading of organic dyes onto the liquid crystalline clay nanosheets …
View article: Liquid crystalline structuring in dilute suspensions of high aspect ratio clay nanosheets
Liquid crystalline structuring in dilute suspensions of high aspect ratio clay nanosheets Open
Aqueous liquid suspensions of high aspect ratio 2D clay nanosheets were investigated using small angle X-ray scattering (SAXS). The high aspect ratio of synthetic fluorohectorite clays allows for investigation of liquid crystalline orienta…
View article: Reversible Snapping of Constrained Anisotropic Hydrogels Upon Light Stimulations
Reversible Snapping of Constrained Anisotropic Hydrogels Upon Light Stimulations Open
Creatures, such as Venus flytrap and hummingbirds, capable of rapid predation through snap‐through transition, provide paradigms for the design of soft actuators and robots with fast actions. However, these artificial “snappers” usually ne…
View article: Liquid crystalline structuring in dilute suspensions of high aspect ratio clay nanosheets
Liquid crystalline structuring in dilute suspensions of high aspect ratio clay nanosheets Open
Aqueous liquid suspensions of high-aspect ratio 2D clay nanosheets were investigated using small angle X-ray scattering (SAXS). The high aspect ratio of synthetic fluorohectorite clays allows for investigation of liquid crystalline orienta…
View article: CCDC 2285829: Experimental Crystal Structure Determination
CCDC 2285829: 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: Quantitative Scrolling into Microporous Nanotubes of the Hydrous Layered Silicate Ilerite
Quantitative Scrolling into Microporous Nanotubes of the Hydrous Layered Silicate Ilerite Open
The synthetic hydrous layered silicate ilerite was quantitatively converted into microporous nanoscrolls (NS). Delamination of ilerite that was ion‐exchanged for N‐Methyl‐D‐glucaminium (Meg + ), through one‐dimensional (1D) dissolution ini…
View article: Animating hydrogel knotbots with topology-invoked self-regulation
Animating hydrogel knotbots with topology-invoked self-regulation Open
Steering soft robots in a self-regulated manner remains a grand challenge, which often requires continuous symmetry breaking and recovery steps for persistent motion. Although structural morphology is found significant for robotic function…
View article: High‐Performance, Flame‐Retardant, Binder‐Free Li‐Hectorite‐Polybenzimidazole Fiber Separator for Li‐Ion Batteries
High‐Performance, Flame‐Retardant, Binder‐Free Li‐Hectorite‐Polybenzimidazole Fiber Separator for Li‐Ion Batteries Open
Li‐Hectorite (Li‐Hec) clays have inherent 2D diffusion slits offering high lithium (Li + ) ion conductivity. Such Li‐Hec clays spontaneously delaminate into flexible nanosheets, allowing them to be coated on high‐temperature stable polyben…
View article: High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding
High‐permittivity Solvents Increase MXene Stability and Stacking Order Enabling Ultraefficient Terahertz Shielding Open
2D transition metal carbides and nitrides (MXenes) suggest an uncommonly broad combination of important functionalities amongst 2D materials. Nevertheless, MXene suffers from facile oxidation and colloidal instability upon conventional wat…
View article: Polycyclic aromatic hydrocarbon radical anions stabilized by a sodium diglyme cation complex
Polycyclic aromatic hydrocarbon radical anions stabilized by a sodium diglyme cation complex Open
Reduction of polycyclic aromatic hydrocarbons by sodium in the presence of the chelating ether diglyme in THF resulted in the formation of radical carbanion salts. The crystal structure of a Na(diglyme) 2 pyrenide, a new member in this mat…
View article: Green and scalable processing of water‐soluble, biodegradable polymer/clay barrier films
Green and scalable processing of water‐soluble, biodegradable polymer/clay barrier films Open
Poly(vinyl alcohol) (PVOH) based water‐soluble packaging with intentional disposal into wastewater provides great convenience for both households and industry. In this paper, we demonstrate with CO 2 evolution testing that only insignifica…
View article: CSD 1784900: Experimental Crystal Structure Determination
CSD 1784900: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Osmotically Delaminated Silicate Nanosheet‐Coated NCM for Ultra‐Stable Li<sup>+</sup> Storage and Chemical Stability Toward Long‐Term Air Exposure
Osmotically Delaminated Silicate Nanosheet‐Coated NCM for Ultra‐Stable Li<sup>+</sup> Storage and Chemical Stability Toward Long‐Term Air Exposure Open
To ensure the safety and performance of lithium‐ion batteries (LIBs), a rational design and optimization of suitable cathode materials are crucial. Lithium nickel cobalt manganese oxides (NCM) represent one of the most popular cathode mate…
View article: CSD 1783077: Experimental Crystal Structure Determination
CSD 1783077: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: CSD 1783080: Experimental Crystal Structure Determination
CSD 1783080: Experimental Crystal Structure Determination Open
An entry from the Inorganic Crystal Structure Database, the world’s repository for inorganic crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely availabl…
View article: Intercalation of CO<sub>2</sub> Selected by Type of Interlayer Cation in Dried Synthetic Hectorite
Intercalation of CO<sub>2</sub> Selected by Type of Interlayer Cation in Dried Synthetic Hectorite Open
Clay minerals are abundant in caprock formations for anthropogenic storage sites for CO2, and they are potential capture materials for CO2 postcombustion sequestration. We investigate the response to CO2 exposure of dried fluorohectorite c…
View article: New Functional Polymer Materials via Click Chemistry-Based Modification of Cellulose Acetate
New Functional Polymer Materials via Click Chemistry-Based Modification of Cellulose Acetate Open
[Image: see text] Cellulose acetate (CA) was partially acrylated, and the resulting cellulose acetate acrylate (acryl-substitution degree of 0.2) underwent quantitative thio-Michael click reactions with various thiols. A toolbox of functio…
View article: Do Aqueous Suspensions of Smectite Clays Form a Smectic Liquid-Crystalline Phase?
Do Aqueous Suspensions of Smectite Clays Form a Smectic Liquid-Crystalline Phase? Open
Bottom-up strategies for the production of well-defined nanostructures often rely on the self-assembly of anisotropic colloidal particles (nanowires and nanosheets). These building blocks can be obtained by delamination in a solvent of low…
View article: Repulsive Osmotic Delamination: 1D Dissolution of 2D Materials
Repulsive Osmotic Delamination: 1D Dissolution of 2D Materials Open
2D materials have proved their potential in nearly every area of material science and chemistry. Unfortunately, large‐scale production of nanosheets is not straightforward. Current methods suffer from low yield, uncontrollable defects, and…
View article: Influence of CO<sub>2</sub> on Nanoconfined Water in a Clay Mineral
Influence of CO<sub>2</sub> on Nanoconfined Water in a Clay Mineral Open
Developing new technologies for carbon sequestra-tion and long-term carbon storage is important. Clay minerals are interesting in this context as they are low-cost, naturally abundant, can adsorb considerable amounts of CO2, and are presen…