Articles tagged with Anions
Researchers found that sulfate anions significantly improve the performance of zinc-ion hybrid capacitors, enabling them to operate for over nine months and showing excellent flexibility. The study highlights the importance of electrolyte anions in enhancing the power and energy density of capacitors.
Scientists have created extremely stable fluorescent molecular switches that can be controlled electrochemically, using a particular redox active anion. These systems show large reversible fluorescence modulation and are soluble in many organic solvents, making them suitable for applications in biosensing, imaging, and drug delivery.
Halogen-bonding supramolecular co-crystals exhibit diverse architectures and impressive physicochemical properties, including fluorescence, magnetism, and liquid crystal behavior. The strength of halogen bonds enables the formation of complex assemblies with synergistic effects between components.
A research team at Chinese Academy of Sciences has developed a new solvation strategy to enhance the oxidation stability of carbonate-based electrolytes in Zinc/Graphite batteries. This breakthrough could lead to high-voltage cells with low self-discharge and long shelf life, making them suitable for large-scale grid storage.
KAUST scientists create first water-stable, n-type semiconducting polymer doped with ammonium salt, enabling stable conversion of ionic signals into electronic signals. The innovation has potential applications in glucose sensors, enzymatic fuel cells and monitoring ion channel activity.
Researchers at JCESR are working on enhancing ion conductivity in solid-state electrolytes using the paddlewheel effect. This can lead to faster and more stable battery performance, eliminating thermal runaway reactions that cause fires.
Researchers developed a new descriptor named orbital electrostatic energy (OEE) to describe electrostatic properties of ions and arene π systems. OEE strongly correlates with binding energies, especially for multiply-shaped ion-π complexes.
Scientists have demonstrated a technique to visualize the dynamic migration mechanism of ions in solid-phase using chemical transmission electron microscopy. The study reveals a 'migration bridge' between neighboring nanowires and offers critical insights into ion migration kinetics on nanoscale systems.
Researchers at the University of Bath have developed a low-cost, low-energy desalination process that can provide safe water to communities in remote and disaster-struck areas. The prototype desalination unit is powered by solar energy and uses a novel approach to remove salt from seawater.
Chemists at the University of Tokyo mapped an artificial molecular self-assembly pathway that forms a spherical cage and an ultrathin sheet, exhibiting primitive qualities of a 'smart' material. The research team hopes to design molecules that can self-assemble and reorganize independently under environmental conditions.
Researchers at Trinity College Dublin have successfully created a self-assembling material that forms predictable and reproducible 2D networks. This breakthrough has far-reaching implications for various fields, including targeted drug delivery, printing, and electronic applications.
Researchers have discovered a 'hidden' phase in metal oxide materials that gives them ferroelectric properties when activated by fast pulses of light. This breakthrough enables the creation of materials with controllable properties that can be turned on and off in trillionths of a second.
Researchers discovered that positive and negative ions in RTILs form neutral pairs or clusters, but emerge as charged particles due to thermal fluctuations, sustaining conductivity. This 'relay race' of charges is similar to crystalline semiconductors, offering potential for new applications in supercapacitors, fuel cells, and batteries.
Researchers have developed dual-ion batteries that integrate anodes and cathodes, enabling high efficiency and low cost. The batteries use aluminum foil as the cathode material and graphite as the anode, achieving a new level of performance.
Chinese physicists develop mathematical equations and computer simulations to model photodetachment of negative ions via photons, simulating cosmic rays' collisions with planets. The speed of a moving surface significantly affects the chances of photodetachment, with Chloride (Cl-) ions being less prone than hydrogen (H-) ions.
Researchers at Kanazawa University designed a metallomolecular cage that can be opened through disulfide exchange reactions with thiolate anions. The cage's 'hatch' opens to allow cesium ions to enter, demonstrating its potential as a molecular container with on-demand guest uptake/release systems.
Researchers have developed a new way of making rechargeable fluoride batteries that work at room temperature, potentially increasing battery lifespans up to eight times longer. The breakthrough uses liquid components and a specially designed electrolyte, allowing for more efficient energy storage and release.
The study reveals that adding water to the electrolyte speeds up the slow reaction of calcium-ion batteries by changing its structure. This discovery could greatly benefit the development of electrolytes for implementing calcium-ion batteries, making them safer, cheaper, and more powerful than existing lithium-ion batteries.
Physicists have characterised higher energy levels reached by electrons in resonance with positronium ions, a complex three-particle system. The new model provides guidance for experimentalists to observe these resonant structures, potentially leading to breakthroughs in atomic and nuclear physics.
Researchers from Ruhr-Universität Bochum used terahertz spectroscopy to gain new insights into the hydration shell of charged particles. They found that hydration shells with a size between two and 21 water molecules were determined for more than 37 salts, depending on the ion's size and valency.
A team of planetary scientists from MIT has identified large concentrations of sulfidic anions in shallow lakes on early Earth, which may have sped up the chemical reactions required to convert simple prebiotic molecules into RNA. This finding fundamentally changes our knowledge of early Earth and its potential role in the origin of life.
Researchers at MIT have developed a new approach to designing battery materials that could lead to improved ion mobility and reduced reactivity. By analyzing the lattice properties of solid materials, they found a correlation between vibrational frequency and conductivity, allowing for accurate predictions of material properties.
A team of scientists has provided a theoretical explanation for how helium can form stable compounds, challenging the element's long-held reputation as unreactive. The research predicts new sets of compounds that might react with helium under pressure, which could lead to the discovery of more helium reserves in the Earth's mantle.
Researchers discover a precursor to create phosphorus compounds, bypassing hazardous substances. The new anions, bis(trichlorosilyl)phosphide, work well in various reactions, producing diverse phosphorus-containing compounds.
Recent papers by Keck Graduate Institute professors James Sterling and Shenda Baker describe the interaction between ions and glycans on mucosal surfaces. The research highlights how different ion types affect the structure, electrical potential, and fluid behavior of airway-surface layers in the lung.
Scientists from Siberian Federal University have developed a new method for synthesizing iron-dysprosium garnet, a promising magnetic material. This method uses anion resin exchange precipitation, allowing for the production of materials with controlled properties and no high temperatures or aggressive substances.
Researchers at Hokkaido University have developed a novel material synthesis method that utilizes protons to introduce ions into host materials. This liquid-free process enables the homogenous introduction of various ions, such as lithium and sodium, into tantalum sulfide, maintaining its crystallinity.
Researchers at Virginia Commonwealth University have designed solid-state electrolytes that are as conductive as their liquid counterparts while being very stable. This breakthrough could enable the creation of safer and more powerful lithium-ion batteries.
Researchers have demonstrated that incoherent electrons can induce coherence in molecular systems through attachment, leading to the ejection of ions in a preferred direction. This breakthrough has significant implications for controlling chemical reactions using photons and understanding the dynamics of excited molecular negative ions.
Researchers developed a low-cost battery using waste graphite, offering high safety and simplicity in production. The battery features a unique cathode material and can withstand thousands of charging cycles.
KAUST researchers have produced detailed 3D visualizations of ionic winds flowing from a flame in response to direct and alternating electric fields. The study reveals that negative ions play a crucial role in shaping the wind dynamics.
Researchers at National Institutes of Natural Sciences successfully generated plasma with an ion temperature of 100 million degrees, a key milestone toward achieving burning plasma for fusion. The high-temperature plasma exhibits characteristics suitable for fusion reactor plasmas.
Researchers at Caltech used a supercomputer to identify new electrolyte materials that could enhance lithium-ion battery performance. They found polymers with promising properties for lithium-ion conduction, which could lead to more efficient and stable batteries.
Scientists at NIFS successfully measure flow reversal of negative ions, revealing U-turn trajectory and beam extraction point. The study's findings improve performance of negative ion sources, essential for future fusion devices.
Researchers have successfully created the first intermetallic double salt with platinum, Cesium Platinide Hydride (4Cs2Pt?CsH), which exhibits a translucent ruby red crystal structure. The compound is highly unstable and can only exist in an inert environment, similar to outer space conditions.
Researchers from Penn State and industry partners aim to create low-cost, durable anion exchange membranes with novel cations for commercial-scale applications in fuel cells and electrolyzers. They will focus on stable polymers meeting ARPA-E requirements for resistance and cost.
Researchers at Indiana University have discovered a new molecular structure with potential applications in reducing nuclear and agricultural waste. The 'supramolecule,' which consists of two negatively charged ions, could be used to remove sulfate ions from nuclear waste storage processes and extract harmful phosphate ions from the env...
Scientists create a unique cement semiconductor by introducing electron anions, which transforms its properties from insulator to transparent conductor. The material's glass equivalent has a lower glass transition temperature, allowing for greater control over the formation process.
A new study uses electron scavenging to mimic radiation damage in a material called trifluoroacetamide (TFAA), triggering selective reactions and creating specific negative ions. The findings provide insights into the effects of low-energy electrons on biological tissues, potentially leading to better protection methods.
Researchers developed synthetic transporters that can carry chloride through lipid-bilayer membranes, potentially replacing faulty channels in cystic fibrosis. The new molecules show high selectivity for chloride over protons and hydroxide, addressing a potential toxic effect.
The new ion soft-landing technique resulted in electrodes that could store a third more energy and had twice the lifespan compared to conventional methods. The team also found that the POM hybrid electrodes used the active material extremely efficiently, with the lowest amount of POM required to reach their highest capacity.
The team discovered a new plasma wave phenomenon leading to the development of a negative ion source for fusion plasma heating. The newly developed plasma source utilizes a helicon wave to produce high-temperature electrons, which are then neutralized and injected into the magnetically-confined plasma core.
A Chinese research team has developed a novel aluminum-graphite dual-ion battery offering significantly reduced weight, volume, and fabrication cost. The new battery boasts higher energy density and lower production costs compared to conventional lithium-ion batteries.
A multidisciplinary team from the Monell Center has characterized the identity and functionality of salt-responding taste cells on the tongue. The knowledge may lead to novel approaches to develop salt replacers or enhancers that can help reduce sodium content in food.
Researchers at the University of Arizona have discovered ethylenedione, a diradical molecule that was previously thought to be elusive. The discovery has significant implications for understanding radical molecular species, industrial processes, and potentially even atmospheric chemistry and climate modeling.
Researchers at Indiana University have successfully demonstrated the self-assembly of large, symmetrical molecules in 3D crystalline solids and 2D crystals. The 'bricks-and-mortar' approach shows promise for organic electronic devices such as field-effect transistors and photovoltaic cells.
Researchers have developed a new tool to silence neurons with high reliability and efficiency. The new channelrhodopsin variant, iC1C2, allows neuroscientists to both activate and inactivate neurons in deep brain structures using dim pulses of light.
A team led by chemist Richard Saykally and theorist David Prendergast has observed contact pairing between guanidinium cations in aqueous solution, governed by water-binding energy. This phenomenon challenges the long-held assumption that like charges repel, suggesting a new understanding of ion interactions in water.
Researchers have developed a new polymer membrane that improves the stability and conductivity of alkaline fuel cells while reducing the need for expensive platinum catalysts. This breakthrough could make fuel cells more affordable and accessible, offering an alternative to traditional technology.
Researchers at Indiana University have developed a five-sided macrocycle called cyanostar, which can bind large negatively charged ions. The molecule has unprecedented properties, including the ability to form dialkylphosphate rotaxanes and demonstrate applications in environmental remediation and lithium ion battery processes.
A team of chemists at the University of Geneva has developed a rare halogen bond that can transport anions across phospholipid bilayer membranes, similar to cellular structures. This discovery has significant implications for medical applications, particularly in treating diseases linked to ion transport issues.
Researchers discovered a previously unknown phenomenon in quantum plasmas, enabling positively charged particles to form atom-like structures. This discovery accelerates current conduction, potentially revolutionizing nanotechnology and applications such as micro-chips and semiconductors.
Researchers from the University of Gothenburg developed a new method to study electron interactions in negative ions, crucial for understanding phenomena like superconductors. This knowledge may also shed light on the origin of life and the chemical reactions that occurred in space.
Researchers at UC Santa Cruz have developed a new material, SLUG-26, that can trap negatively-charged pollutants from water. The material, which has a high capacity for holding onto negative ions, could be used to treat polluted water through an ion exchange process.
Researchers at Georgia Institute of Technology and Tel Aviv University discovered dielectron charging of water nano-droplets, where excess electrons form doubly negatively charged clusters. The study reveals a water-splitting process resulting in molecular hydrogen liberation and hydroxide anions formation.
The Cassini mission has discovered an oxygen atmosphere on Saturn's moon Rhea, which is extremely thin and sustained by high-energy particles bombarding its icy surface. The formation of oxygen and carbon dioxide could be a pre-requisite for life, with complex chemistry potentially common throughout the solar system.
The Electron Beam Ion Source (EBIS) will produce and accelerate beams with greater versatility than the current system, allowing studies with new kinds of ions previously unavailable to researchers. EBIS can start with positive ions or even neutral atoms, creating ion beams from almost any element.
Researchers have observed single ions marching through a tiny carbon nanotube channel, allowing for extremely sensitive detectors or new water-desalination systems. The channels can also study chemical reactions at the single-molecule level.
Researchers at Queen's University Belfast have developed new antimicrobial agents to combat hospital-acquired infections. The agents, made of ionic liquids, kill colonies and prevent bacterial growth in biofilms, providing a promising solution for MRSA and other resistant microbes.
A team at Lawrence Berkeley National Laboratory has used near-edge x-ray absorption fine structure (NEXAFS) measurements to study ion-protein interactions. The results support the Law of Matching Water Affinities, a proposed explanation for Hofmeister effects.