A5044847396- Polymer Surface Interaction Studies
- Analytical Chemistry and Sensors
- Hydrogels: synthesis, properties, applications
- Spectroscopy and Quantum Chemical Studies
- Electrochemical Analysis and Applications
- Electrostatics and Colloid Interactions
- Force Microscopy Techniques and Applications
- Fuel Cells and Related Materials
- Various Chemistry Research Topics
- Molecular Sensors and Ion Detection
- Recycling and Waste Management Techniques
- Smart Materials for Construction
- Pickering emulsions and particle stabilization
- Micro and Nano Robotics
- Marine and coastal ecosystems
- Adhesion, Friction, and Surface Interactions
- Surface Modification and Superhydrophobicity
- Fluoride Effects and Removal
- Mass Spectrometry Techniques and Applications
- Chemical and Physical Properties in Aqueous Solutions
- NMR spectroscopy and applications
- Per- and polyfluoroalkyl substances research
- Hydrocarbon exploration and reservoir analysis
- Optical Polarization and Ellipsometry
- History and advancements in chemistry
University of Newcastle Australia
2020-2024
Technical University of Darmstadt
2024
Electrolytes are central to life and technology but lack complete understanding. Recent experiments with highly concentrated electrolytes have revealed electrostatic decay lengths orders of magnitude larger than those predicted by theory simulation. This phenomenon, dubbed 'anomalous underscreening' its origin is still a comprehensive Herein we provide perspective over recent developments in this field discuss phenomena that, while potentially pertinent electrolyte underscreening, yet be...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTON THE REACTIONS OF BOTH IONS AND MOLECULES ACIDS, BASES SALTS. SODIUM ETHYLATE WITH METHYL IODIDE IN ABSOLUTE ETHYL ALCOHOL AT 25°.4 [TWENTY-FIRST5 COMMUNICATION ON CATALYSIS.]H. C. Robertson Jr. and S. F. AcreeCite this: J. Am. Chem. Soc. 1915, 37, 8, 1902–1909Publication Date (Print):August 1, 1915Publication History Published online1 May 2002Published inissue 1 August...
Neutron reflectometry is the foremost technique for in situ determination of volume fraction profiles polymer brushes at planar interfaces. However, subtle features data produced by these diffuse interfaces challenge interpretation. Historically, analyses have used least-squares approaches that do not adequately quantify uncertainty modeled profile and ignore possibility other structures also match collected (multimodality). Here, a Bayesian statistical approach permits structural...
Understanding the complex interactions between polymers and surfactants is required to optimise commercially relevant systems such as paint, toothpaste detergent. Neutral with surfactants, forming 'pearl necklace' structures that are often conceptualised pseudo-polyelectrolytes. Here we pose two questions test limits of this analogy: Firstly, in presence salt, do these polymer-surfactant behave like polyelectrolytes? Secondly, complexes resist geometric confinement polyelectrolytes?We...
Pertinent to cryopreservation as well energy storage and batteries, nonaqueous electrolytes their mixtures with water were investigated. In particular, specific ion-induced effects on the modulation of a poly(N-isopropylacrylamide) (PNIPAM) brush investigated in various dimethyl sulfoxide (DMSO)–water solvent mixtures. Spectroscopic ellipsometry neutron reflectometry employed probe changes swelling structure, respectively. water-rich solvents (i.e., pure 6 mol % DMSO), PNIPAM undergoes...
Diffuse soft matter interfaces take many forms, from end-tethered polymer brushes or adsorbed surfactants to self-assembled layers of lipids. These play crucial roles across a multitude fields, including materials science, biophysics, and nanotechnology. Understanding the nanostructure properties these is fundamental for optimising their performance designing novel functional materials. In recent years, reflectometry techniques, in particular neutron reflectometry, have emerged as powerful...
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTOn the Reactions of both Ions and Molecules Acids Bases SaltsH. C. Robertson Jr.H. Robertson, Jr.More by H. Jr. S. F. AcreeS. AcreeMore AcreeCite this: J. Phys. Chem. 1915, 19, 5, 381–432Publication Date (Print):May 1, 1915Publication History Published online1 May 2002Published inissue 1 1915https://doi.org/10.1021/j150158a005RIGHTS & PERMISSIONSArticle Views22Altmetric-Citations4LEARN ABOUT THESE METRICSArticle Views are COUNTER-compliant sum full...
Structural characterisation of thermoresponsive polymer brushes in binary DMSO–water mixtures reveals both LCST and UCST behaviour.
Employing neutral impact collision ion scattering spectroscopy (NICISS), we have directly measured the concentration depth profiles (CDPs) of various monovalent ions at vapor-formamide interface. NICISS provides CDPs individual by measuring energy loss helium atoms backscattered from solution interface Cl-, Br-, I-, Na+, K+, and Cs+ are compared to elucidate interfacial specific trends. We report a reverse Hofmeister series in presence inorganic (anion cation) relative water-vapor interface,...
Hypersaline environments are ubiquitous in nature and found myriad technological processes. Recent empirical studies have revealed a significant discrepancy between predicted observed screening lengths at high salt concentrations, phenomenon referred to as underscreening. Herein we investigate underscreening using cationic polyelectrolyte brush an exemplar. Poly(2-(methacryloyloxy)ethyl)trimethylammonium (PMETAC) brushes were synthesised their internal structural changes swelling response...
Wave functional theory calculations and experiments reveal that the inductive effect does not explain p K a charge density trends in haloacetates.