Articles tagged with Chemical Reactions
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.
A new scale of electronegativity has been developed, providing a more comprehensive and extensive definition that can predict the approximate charge distribution in different molecules and materials. The new definition averages the binding energy of valence electrons and offers an equation to describe the total energy of an atom.
Researchers at TUM created artificial cell assemblies that can communicate and trigger complex reactions like RNA production, mimicking biological organisms. The system achieves spatial differentiation and is a step towards tissue-like synthetic materials.
Molecules can switch between magnetic and non-magnetic forms dynamically, enabling applications like efficient solar cells and quantum computing. The researchers found this process occurs in half a picosecond, far faster than initially believed.
A KAIST team presents a detailed analysis of metabolic engineering routes and optimal synthetic pathways for producing various industrial bio-based chemicals. The comprehensive metabolic map charts all available strategies and pathways, serving as a blueprint for the production of interest from renewable resources.
Researchers from Osaka City University have developed a novel quantum algorithm to perform full configuration interaction calculations suitable for predicting chemical reactions, overcoming the exponential/combinatorial explosion of traditional methods. This breakthrough enables practical applications of quantum chemistry on quantum co...
An international team of scientists developed a hybrid micro mixer that increases mixing efficiency by up to 90%, making it suitable for various biological studies. The device combines different geometry elements, offering high process efficiency and replacing existing passive micro mixers.
An interdisciplinary team of scientists developed a new method to describe molecular rotations in solvents, paving the way for controlling chemical reactions. The technique, based on Feynman diagrams, delivers precise results and has potential to simulate molecular behavior.
Using laser pulses and supercomputing simulations, researchers observed electrons' movements in real-time. This breakthrough study verifies theoretical predictions and provides new insights into atomic-scale processes governing chemical reactions.
Scientists at Tsinghua University and Beihang University developed a 'microtube pump' that can transport tiny amounts of fluid using sunlight-powered capillary forces. The pump consists of two layers with asymmetric properties that work together to accelerate water droplets to exceptional speeds.
Researchers created both organic compounds and oxygen in the lab without life. The simulations, published by Johns Hopkins University, suggest that oxygen and organics can be produced abiotically, leading to false positives for life.
Researchers from China and Germany discover the geometric phase effect in a benchmark chemical reaction, providing new insights into molecular systems with conical intersections. The study uses high-resolution velocity map ion imaging technique to observe rapid oscillations of H2 products, which can only be reproduced by theoretical ca...
A UMass Lowell team is working on developing renewable fuel additives from sawdust to increase energy efficiency and reduce emissions. The project aims to create a sustainable alternative to traditional fossil fuels in internal combustion engines.
Researchers create amino acid chains with specific sequences, hinting at first glimmers of information storage on early Earth. The study aims to unlock new capabilities for modern medicine by designing drugs and synthesizing compounds more efficiently.
Scientists studied copper/gold and iron/palladium thin film reactions upon heating, enabling improved material properties for microelectronics. The research helps identify features of these systems for designing devices.
Scientists have proposed an innovative method to create custom-made mirror molecules for analysis by inducing rotationally-induced chirality in symmetric-top molecules. This technique could enhance insight into the workings of nature and pave the way for new materials and methods.
Researchers at EPFL have successfully controlled a chemical reaction just above absolute zero by manipulating atomic orientation and energies. The study has significant implications for understanding fundamental chemistry models.
Researchers at the University of Toronto have discovered a way to select the outcome of chemical reactions by manipulating the 'impact parameter', a key factor in reaction dynamics. By directing reagent molecules towards targeted molecules with controlled accuracy, chemists can now control the products of chemical reactions.
Researchers propose a simple chemical reaction network that yields power-law statistics with tunable exponents. This suggests bacteria can naturally generate power-law distributions in flagellar rotation intervals, making them more capable in solving searching tasks.
A team of researchers developed an electrically conductive MOF that conducts electricity up to 10,000 times better than before, using a potassium chemical mix to boost conductivity. The new material has high electron mobility and can be used in various applications including batteries, supercapacitors, and fuel cells.
A multidisciplinary team of scientists from OIST has developed a novel tool to monitor biofilm growth, allowing for more efficient testing of replacement antibiotics. By using nanostructured chips and localized surface plasmon resonance, the researchers can observe bacterial cells growing without disrupting their test subjects.
Scripps Research scientists have developed a powerful new strategy for synthesizing molecular skeletons of chemicals used in drugs and other important products. The method combines two chemical reactions, C-C cross coupling and cycloaddition, providing unprecedented flexibility and control over chemical synthesis.
Researchers at Berkeley Lab have discovered a method to make the linkages between COFs much more sturdy, giving them new characteristics and expanding their applications. The technique targets weak links and forms resilient bonds that hold up in harsh chemical environments.
Researchers analyzed ocean sediments to understand Atlantic Ocean circulation changes, finding two episodes of ice melting linked to slow-downs in ocean circulation. The findings have implications for future long-term changes in Earth systems with global climate change.
A team of international researchers has successfully simulated chemical bonds using trapped ions on a quantum computer, marking a significant breakthrough in the development of full-scale quantum computers. This achievement demonstrates the potential of quantum chemistry to unlock new insights into material properties and behavior.
Researchers at NTNU used a combination of techniques to study nearly 100,000 simulation images and identify what triggers water molecules to split. They discovered a small number of variables that describe the causative mechanism, providing detailed knowledge of the reaction.
Researchers have discovered a new reason lithium-oxygen batteries tend to slow down after few charge/discharge cycles due to lithium peroxide buildup in the electrolyte component. The buildup contributes to the loss of power and efficiency of these promising batteries.
Researchers created a new cost-effective instrument combining mass spectrometry and thermal desorption to study uracil's molecular dynamics. The technique provides insights into mechanistic principles that could inform better medicines and optimize photo-dynamic therapies.
Researchers created an atomic movie of molecule reactions, revealing how light stretches bonds to a point of no return. The observation could lead to better understanding of life processes like photosynthesis and vision.
A team of scientists has developed a low-cost and portable method for detecting nerve agents using a combination of Lego bricks, a smartphone camera, and a UV lamp. The new device can distinguish between different classes of nerve agents and provide quick results, which is crucial in preventing mass harm.
Scientists have successfully separated two forms of water, ortho- and para-water, which exhibit different chemical reactivities due to their nuclear spin orientations. These findings were reported in Nature Communications and confirmed by computer simulations.
Researchers at TU Dresden have created a novel approach to synthesize nanographenes and graphene nanoribbons using ball mills, eliminating the need for solvents and reducing environmental impact. This breakthrough could pave the way for more efficient and sustainable production of electronic and solar energy materials.
Researchers found that releasing toxicity information encourages facilities to reduce emissions, especially for chemicals ranked high in hazard levels. This study suggests government agencies can effectively curb industrial use of toxic chemicals through public disclosure alone.
Researchers created a transparent hybrid film combining natural clay minerals and dyes that changes color in response to environmental humidity. The novel mechanism involves the confinement of dye molecules within nanometer-scale gaps, allowing for reversible color change without breaking chemical bonds.
Scientists have successfully connected, merged and arranged artificial cells to form complex tissue structures with different connectivity types. This breakthrough enables the creation of artificial cell networks that mimic biological tissues.
Researchers at the Center for Multidimensional Carbon Materials successfully measured and controlled the temperature of individual graphene bubbles using a single laser beam. The study found that the temperature oscillates with bubble height, allowing for efficient heating of specific regions within the bubble.
Researchers have developed a sophisticated membrane design that boosts water flux by five-fold, surpassing traditional nanofiltration membranes. The new system exhibits excellent water-salt separation ability and maintains high water permeability and selectivity.
A team of Yale University scientists has developed a new approach to glycosylation that is remarkably simple and works in water at room temperature. This process can be generalized to create large numbers of different compounds, making it easier to find the best biochemical probes and therapeutics.
Researchers at Penn State have developed a chemical-free method for etching nanoscale features on silicon wafers. The technique, called tribochemical reaction, uses a scanning probe microscope to remove single layers of atoms from the surface without damaging underlying layers.
Researchers at Eindhoven University of Technology have developed an artificial leaf that can produce chemicals using sunlight, increasing efficiency by 20%. The 'mini-factory' uses a clever feedback system costing less than 50 euros to automatically adjust production levels.
A new study implicates a role for light-induced electrical activity in controlling chemical codes in the brain, potentially leading to chemical imbalances underlying mental illness. The researchers found that manipulating brain electrical activity prevented neurotransmitter switching associated with anxious and depressed behavior.
Researchers bridge the gap between organic and theoretical chemistry by proving the validity of 'curly arrows' in depicting chemical reactions. The study provides a new method to model electronic structure during chemical reactions, connecting traditional depictions with state-of-the-art quantum chemical calculations.
Geneticist Andrew Feinberg highlights the importance of combining epigenetics and genetics research to understand the impact of environmental exposures on human health. He argues that epigenetics can provide valuable insights into gene expression and its relationship with disease.
A team of researchers from the University of Münster has developed a new computer method that enables chemists to plan syntheses with unprecedented efficiency. The method uses deep neural networks and Monte Carlo Tree Search, allowing computers to learn the rules and applications of chemical reactions from literature.
Researchers have developed a new process for creating complex molecules in just a few steps, making it more efficient and environmentally friendly. The method involves C-H activation, allowing for the transformation of a single C-H bond into a functional group, enabling easy combination of two different molecules.
Researchers can now study pollutants and emissions more comprehensively by tracking the changing chemistry of carbon molecules in the air. A new method established by Gabriel Isaacman-VanWertz allows for accurate depiction of a compound's behavior over time.
Researchers have developed the first three-dimensional computer model to represent human metabolic processes. This new tool, Recon3D, integrates structural data on over 4,000 metabolites and nearly 13,000 proteins, allowing for more accurate simulations of metabolic reactions and better understanding of diseases such as Parkinson's.
Using a super resolution microscopic technique, researchers have developed a method to follow chemical reactions in very small volumes, including inside living cells and individual organelles. This breakthrough enables the study of the chemistry of life with unprecedented precision.
The discovery reveals that chemical desorption is more efficient than previously believed, releasing particles and advancing our understanding of star formation in molecular clouds. This finding has significant implications for the study of interstellar chemistry.
Researchers used UV laser photolysis to improve diamond synthesis by suppressing unwanted side products. The technique promotes faster and better-quality diamond growth, opening up new possibilities for material synthesis.
Researchers at Cornell University have developed a new transient electronics architecture that can remotely vaporize itself, offering benefits for data protection and environmental monitoring. The technology uses radio waves to trigger a thermal reaction, releasing chemicals that decompose the electronics.
Researchers at Brown University aim to store billions of terabytes of data in a single flask of liquid using synthetic molecules. The project, backed by a $4.1 million DARPA award, has the potential to enable computation through chemical reactions and improve information densities.
Researchers at Georgia Institute of Technology have identified two urinary chemicals, trigonelline and homarine, that trigger a warning response in mud crabs when exposed to blue crab urine. This finding has implications for understanding ecological balances in marine ecosystems and informing better management of fisheries.
Researchers have developed a robot exoskeleton that can rapidly change its shape in response to chemical or thermal changes, enabling the creation of autonomous micron-scale machines. The graphene-based bimorph technology allows for the production of tiny robots with electronic, photonic and chemical payloads.
Researchers from QUT, KIT, and Ghent University create a light-switchable chemical reaction system to revolutionize chip printing. The system uses visible light to reversibly switch certain chemical processes, potentially making it cheaper, simpler and safer.
Bittner's research aims to optimize pathways for energy conversion, using an algorithm that predicts electronic coupling and nuclear motions. The algorithm, developed with collaborators, can perform thousands of calculations months on a high-performance computer.
Researchers at ETH Zurich generate the world's shortest controlled laser pulse with a duration of 43 attoseconds, allowing for unprecedented time resolution in studying molecular dynamics. This breakthrough enables faster charge transfer and potentially more efficient solar cells.
A research team at Berkeley Lab-led study reveals surprising chemical reactivity in battery components previously considered compatible. They discovered defects and impurities in the oxidized surface layer of magnesium that drive unwanted reactions.
Researchers at Oak Ridge National Laboratory use neutron crystallography to study the location of hydrogen atoms in aspartate aminotransferase, an enzyme vital to metabolism. This study could lead to new antibiotics and medicines against multidrug-resistant diseases.
The innovative method developed by JGU and Evonik Performance Materials GmbH allows for flexible reaction to available electricity supply, eliminating the need for customized electrolysis apparatuses. This breakthrough in electro-organic synthesis enables sustainable production of fine chemicals with minimal environmental impact.