73 Dokumente gefunden

Atomistic Insights into Structure and Properties of ε‑Caprolactone Oligomers

The design of functional and sustainable materials requires a detailed understanding of the material properties and degradation mechanisms. In particular, the design of fully biodegradable polymers could allow a quick and controlled decomposition of materials before they accumulate in the environment…
Washington: American Chemical Society, 2026-01-27

Fluorine-Free Ion Exchange Membranes for (Photo)electrochemical Applications

The increasing global demand for sustainable energy solutions has driven significant advancements in photoelectrochemical (PEC) technologies, particularly for hydrogen production and biomass valorization. A key challenge for PEC cells is the selection of ion exchange membranes (IEMs) that ensure efficient…
Washington: American Chemical Society, 2025-10-20

Understanding the Interplay Between Pore Structure and Ionic Liquid Interaction on the Gas Uptake of Microporous Carbons

Interfaces formed between porous carbon materials and ionic liquids (ILs) play an essential role in catalysis as well as in electrochemical energy storage and energy conversion. Profound knowledge about the formed local structures on a molecular level is essential to create the desired physicochemical…
Weinheim: Wiley-VCH, 2025-09-18

Nanoscale Investigation of Elasticity Changes and Augmented Rigidity of Block Copolymer Micelles Induced by Reversible Core-Cross-Linking

Drug-delivery systems have attracted considerable attention due to their potential to increase the bioavailability of certain drugs and mitigate side effects by enabling targeted drug release. Reversibly core-cross-linked block copolymer micelles providing a hydrophilic and potentially nonimmunogenic…
Washington, DC: Soc., 2025-04-23

Revisiting polymer coatings on nanoparticles : correlation between molecular weight and coating thickness in chain transfer…

Various poly(methyl methacrylate) (PMMA) and poly(acrylonitrile) (PAN) coated silica nanoparticles were synthesized via chain transfer polymerization with the goal to assess the coating behavior and characterization of polymer coated silica nanoparticles with monomers of different reactivities. The particles…
Cambridge: The Royal Society of Chemistry, 2025-03-18

Correction: Engineering poly(dehydroalanine)-based gels via droplet-based microfluidics : from bulk to microspheres

Correction for ‘Engineering poly(dehydroalanine)-based gels via droplet-based microfluidics: from bulk to microspheres’ by Hannah F. Mathews et al. , Soft Matter , 2024, 20 , 6231–6246, https://doi.org/10.1039/D4SM00676C .
London: The Royal Society of Chemistry, 2025-02-21

A Combined Raman Spectroscopy and Chemometrics Study of the Interaction of Water-Soluble Polymers with Microorganisms

Optical spectroscopic methods such as Raman spectroscopy offer several advantages for the analysis of water-soluble polymers (WSPs). There is often no need for complex sample preparation, and measurements are usually rapid, mostly non-destructive and no harmful chemicals are required. In this work, we…
Basel: MDPI, 2025-02-19

Reactive polysaccharide derivatives : synthesis and investigation of reactivity

To exploit the full potential of these naturally occurring biopolymers, they can be chemically modified. In particular, the hydroxy group, which occurs in all polysaccharides, can be functionalised. Most common reaction is esterification, and less frequently etherification (primarily technical products…

Modeling in Geosciences : how models shape our understanding of processes, mechanisms, and data

Nature's impressive complexity surrounds our everyday life and has fascinated generations of scientists trying to solve the riddle behind the underlying mechanisms that drive our world at the most fundamental levels. With many failed attempts to provide comprehensive and non-contradictory explanations,…

Nanoskalige Untersuchungen von Polymer-basierten Nanopartikeln in flüssiger Umgebung unter Verwendung von Rasterkraftmikroskopie…

Die Feinabstimmung personalisierter Therapien rückt aktuell verstärkt ins Zentrum der Forschung, wobei ein umfassendes Verständnis und des Zusammenhangs zwischen der chemischen und morphologischen Struktur und der Eigenschaften von Biomaterialien und Medikamenten von herausragender Bedeutung ist. Ein…

Small Changes, Big Impact: Radical Formation of Perylene Monoimides in Photoredox Catalysis

Abstract The use of organic molecules as photosensitizers in photoredox catalysis is an attractive research field as it has the potential to replace conventionally used photosensitizers, which are based on rare metals. In the context of light‐driven hydrogen evolution catalysis, the radical formation…
Weinheim: Wiley, 2024-10-08

Block copolymer micelles as colloidal catalysts for photocatalytic NAD + reduction †

We herein report the preparation, characterization and (photo)catalytic investigation of block copolymer micelles based on amphiphilic, pH-responsive block copolymers featuring pendant bipyridyl rhodium complexes as NAD + reduction catalyst and ruthenium polypyridyl complexes as photosensitizers. A well-defined…
Cambridge: The Royal Society of Chemistry, 2024-09-16

Inverse Vulcanization of Activated Norbornenyl Esters—A Versatile Platform for Functional Sulfur Polymers

Abstract Elemental sulfur has shown to be a promising alternative feedstock for development of novel polymeric materials with high sulfur content. However, the utilization of inverse vulcanized polymers is restricted by the limitation of functional comonomers suitable for an inverse vulcanization. Control…
Weinheim: Wiley, 2024-08-25

Engineering poly(dehydroalanine)-based gels via droplet-based microfluidics: from bulk to microspheres †

Biomedical applications such as drug delivery, tissue engineering, and functional surface coating rely on switchable adsorption and desorption of specialized guest molecules. Poly(dehydroalanine), a polyzwitterion containing pH-dependent positive and negative charges, shows promise for such reversible…
London: The Royal Society of Chemistry, 2024-07-25

Noble Metal-Free Light-Driven Hydrogen Evolution Catalysis in Polyampholytic Hydrogel Networks

Future technologies to harness solar energy and to convert this into chemical energy strongly rely on straightforward approaches to prepare versatile soft matter scaffolds for the immobilization of catalysts and sensitizers in a defined environment. In addition, particularly for light-driven hydrogen…
Washington, DC: Soc., 2024-05-03

Hybrid nanoreactors formed by interpolyelectrolyte complex formation: a colloidal platform for light-driven catalysis †

Multicompartment micelles can combine several chemical functionalities in close proximity and are therefore promising candidates for a new class of nanomaterials. In this study, we report a photocatalytically active multi-compartment micellar nanoreactor for visible light driven hydrogen evolution. The…
Cambridge: The Royal Society of Chemistry, 2024-05-01

The impact of templating and macropores in hard carbons on their properties as negative electrode materials in sodium-ion…

Due to the abundance of sodium and the comparable working principle to lithium-ion technology, sodium-ion batteries (SIBs) are of high interest as sustainable electochemical energy storage devices. Non-graphitizing (“hard”) carbons are widely investigated as negative electrode materials due to their…
Cambridge: Royal Society of Chemistry (RSC), 2024-04-26

Tailoring the Degradation Time of Polycationic PEG-Based Hydrogels toward Dynamic Cell Culture Matrices

Poly(ethylene glycol)-based (PEG) hydrogels provide an ideal platform to obtain well-defined and tailor-made cell culture matrices to enhance in vitro cell culture conditions, although cell adhesion is often challenging when the cells are cultivated on the substrate surface. We herein demonstrate two…
Washington, DC: American Chemical Society, 2024-03-12

Poly(dehydroalanine)‐Based Hydrogels as Efficient Soft Matter Matrices for Light‐Driven Catalysis

Soft matter integration of photosensitizers and catalysts provides promising solutions to developing sustainable materials for energy conversion. Particularly, hydrogels bring unique benefits, such as spatial control and 3D‐accessibility of molecular units, as well as recyclability. Herein, the preparation…
Weinheim: Wiley, 2024-03-07

Asymmetric Block Extension of Star‐Shaped [PEG‐SH] 4 – toward Poly(dehydroalanine)‐Functionalized PEG Hydrogels for Catch…

With the incorporation of polyampholytic segments into soft matter, hydrogels can serve as a reservoir for a variety of charged molecules which can be caught and released upon changes in pH value. Asymmetric block extension of one arm for star‐shaped poly(ethylene glycol) [PEG 26 ‐SH] 4 using short segments…
Weinheim: Wiley-VCH, 2024-02-15