Articles tagged with Chirality
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Researchers have devised a highly sensitive method to test the chirality of materials, overcoming false positives from competing effects. By using twisted meta-molecules, they separated chirality from sources of error, allowing for accurate measurement and potential applications in fields like telecommunications and pharmaceuticals.
Researchers at Scripps Research Institute invent a novel method for remote chiral induction, allowing the creation of pure quantities of desired enantiomers. This breakthrough enables the synthesis of complex chiral molecules that were previously difficult or impossible to produce.
A University of Central Florida team has designed a nanostructured optical sensor that can efficiently detect molecular chirality, a property defining biochemical properties. This technology has the potential to identify chiral drugs and proteins with high accuracy, revolutionizing drug development and understanding diseases.
Researchers at Berkeley Lab discovered chirality in domain walls of amorphous materials, which could enable faster, smaller data storage. The study used high-resolution microscopy techniques to confirm nanoscale magnetic features, opening possibilities for controlling magnetic domains with temperature and light.
Researchers at Berkeley Lab's Molecular Foundry created graphene-layered material with exotic electron behavior that can be used for next-generation computing applications. The material exhibits tiny swirling patterns where layers meet, which could be controlled to tap into spin-orbitronics in ultrathin materials.
Researchers at Hebrew University of Jerusalem create uniform method to separate right- from left-handed chiral molecules using magnets. This breakthrough technology has practical importance for producing better medicines and safer pesticides.
Scientists at the University of Tokyo's Institute of Industrial Science have successfully created chiral nanostructures from gold particles by exploiting plasmon resonance. The method uses circularly polarized light to induce chirality in electric fields, which are then transferred to a dielectric material.
Researchers have developed a method to study the interaction between light and twisted molecules as they transition from left- to right-handed versions. The study reveals that each route leads to different behavior, with potential applications in improving telecoms component design.
A team of researchers led by Georges Belfort has discovered water wires in an imidazole molecule, which could lead to the development of artificial aquaporin membranes for efficient desalination. The study shows that the imidazole's ring structure enables water molecules to self-assemble into a highly oriented linear chain structure.
Researchers successfully created chirality-evolving gold nanoparticles with amino acids and peptides. The new synthesis method enables color modulation by controlling light polarization, paving the way for future displays.
Researchers at Hiroshima University used machine learning to design chiral crystals, analyzing 686 molecules and predicting the best chemical groups. The model, trained on data from 1000 achiral crystals, suggests that carbon, nitrogen, and oxygen elements are most likely to coexist in a chiral crystal
Researchers have developed a technique to sensitively measure molecule structure by twisting laser light and aiming it at miniscule gold gratings. This method could be used to probe the structure and purity of molecules in pharmaceuticals, agrochemicals, foods, and other important products more easily and cheaply.
The researchers' hypothesis is confirmed by laboratory experiments and molecular dynamics calculations, which show that chiral arrangements of water molecules enhance material transport through the membrane.
Researchers create first kagome metal, an electrically conducting crystal with individual atoms arranged in a repeating triangular pattern. The material exhibits strange, quantum-like behaviors in passing electrons, including bending and creation of nearly massless particles.
Researchers at EPFL have developed a new desymmetrization strategy to access chiral building blocks containing urea sub-structures. The method uses a non-chiral cyclopropane precursor and an engineered copper catalyst to selectively form the desired enantiomer.
Researchers have developed a new method to identify the chirality of molecules by exciting electrons into twisting motion using short laser pulses. The technique is highly sensitive, detecting right-handed and left-handed molecules with a signal 1000 times stronger than traditional methods.
Researchers found naturally occurring circular rotation in an atomic monolayer crystal of tungsten diselenide, a promising candidate for valleytronics. Controlling this rotation could provide a stable mechanism to carry and store information. The discovery opens possibilities for creating rotors at the molecular scale.
Scientists at Berkeley Lab study exotic material's properties, revealing chirality in polar vortices. This property could enable new forms of data storage by controlling left- or right-handedness in materials, similar to magnetic materials storing data as ones or zeros.
Physicists Alexei Tsvelik and Oleg Yevtushenko provide a theoretical roadmap for discovering a 'chiral spin liquid,' a magnetically ordered state without a global direction of magnetic moments. The material must be a layered metal with specific properties, including strong response to non-uniform magnetic fields.
Researchers use ultrafast laser to study camphor molecules' photoionization, finding that mirror images emit electrons in opposite directions. This asymmetry could be key to understanding the homochiral nature of living organisms.
Researchers at RUDN University have developed a chemical compound with anticonvulsant properties, showing effectiveness only when it is chirally pure. The compound was synthesized and studied to create an efficient and usable drug for treating epilepsy.
Researchers develop a method for assembling colloidal clusters using origami DNA, allowing precise control over particle orientation and properties. The technique enables the creation of clusters with specified chirality, which could lead to improved understanding and utilization of particles with unique optical or magnetic properties.
Scientists have discovered a 'chiral spin mode' - a sea of electrons spinning in opposing circles that can transport information with little energy dissipation. This breakthrough paves the way for building novel electronic devices such as computers and processors with reduced energy loss.
Scientists at Stanford University have created a novel method for separating chiral molecules, which are essential in pharmaceuticals and agriculture. By utilizing circularly polarized light, the researchers can distinguish between left- and right-handed forms of these molecules, enabling safer and more effective drugs.
A team at Tohoku University has developed a novel approach to control the chirality of single-walled carbon nanotubes. By tuning the oxidation degree of Co catalysts, they achieved predominant synthesis of (6,4) SWNTs. This breakthrough could enable on-demand synthesis of specific-chirality SWNTs for various applications.
Researchers at the University of Nottingham have made a groundbreaking discovery in the search for energy-efficient information storage. By controlling the chirality of magnetic domain walls using an electric field, they have opened up new possibilities for non-volatile information processing and storage technology.
Researchers have developed a new technique to suppress scattering from material defects, improving the performance of sensors and communication systems. By inducing chirality in sound waves, they can reduce energy loss and increase data fidelity.
Hokkaido University researchers have designed a novel mechano-responsive luminescent material that changes color in response to mechanical stimuli. The material, composed of gold and isocyanide complex, transforms into chiral or achiral crystals under different conditions, altering its emission properties.
The research team developed a novel reaction to synthesize organohalides, a crucial class of compounds for pharmaceuticals, with up to 98% enantiomeric purity. This breakthrough addresses the challenge of producing chiral molecules in isomerically pure form, paving the way for new medicines.
Researchers at Cornell University have observed a previously unknown characteristic of water surrounding DNA, revealing a chiral water superstructure that follows the iconic helical structure of DNA. This discovery has significant implications for understanding reactivity and biology in biological systems.
A new discovery in chemistry could lead to more specific and desired forms of drugs, with the creation of chiral molecular sieves that can sort and create left- and right-handed molecules. This breakthrough has broad implications for pharmaceutical companies and may improve medications such as ibuprofen.
Researchers directly observed chiral currents in a 2-D integer quantum Hall system using an atomic quantum simulator. The team created a synthetic magnetic field and manipulated it to observe emergent behavior, showcasing the potential of this technique.
Researchers at Nagoya University developed an organic catalyst that generates amino acid derivatives in high yields with precise stereochemical control. A slight structural change in the catalyst leads to inversion of a single stereocenter, enabling access to specific diastereomers.
Researchers used gold spring-shaped coils to enhance interactions between light and chiral molecules, enabling detection of minute amounts. The study's findings have potential applications in pharmaceutical design, telecommunications, and nanorobotics.
Liquid crystals used for food coloring may have uses beyond food dyes, exhibiting unexpected characteristics that can be harnessed for sensors and other applications. The material responds dramatically to temperature, concentration, and pattern changes.
Researchers created a new family of organocatalysts that can be 'switched on' using purple LEDs, mimicking human vision's colorful light-sensitive molecule formation. The novel approach enables the formation of single-handed isomers with improved therapeutic profiles and reduced environmental impact.
Researchers demonstrated a chiral metamaterial that exhibits significant spectral shift with milliwatt-level power modulation, outperforming current records by a factor of 100,000. The material's properties make it suitable for applications in data processing, sensing, and communications.
A new material has been developed using a simple method that can change color in response to environmental changes, making it suitable for use as sensors. The material also shows promise for bioimaging applications, allowing for non-invasive measurement of molecular interactions in real-time.
Researchers at TSRI unveil a new technique for constructing chiral drug molecules using an α-chiral center, enabling the synthesis of valuable products. The method requires only inexpensive and widely available starting chemicals, mimicking enzymes in cells to create asymmetry.
ICIQ researchers develop a method to convert cyclic carbonates from CO2 into chiral amino-alcohols, used in drugs like Tamiflu and analgesics. The process uses a palladium catalyst and releases CO2, which can be reused.
Researchers have developed a catalyst that flexibly molds reaction product handedness, ensuring correct enantiomeric form. The system's self-amplifying action enhances stereoselectivity with each cycle, holding promise for biologically active compounds and new insights into biological systems.
A team of organic chemists developed a new reaction to directly install amines into carbonyl compounds, resulting in the rapid formation of optically active α-aminocarbonyls. This method enables access to chiral α-aminocarbonyls from readily available carbonyl compounds and hydroxylamines.
Researchers trigger asymmetric autocatalytic reactions using nitrogen-15 isotope, producing chiral organic intermediates. This breakthrough uses the smallest possible chiral induction via the difference between nitrogen-14 and -15 isotopes.
Researchers at Toyohashi University of Technology developed a novel synthetic method to create chiral polymers containing cinchona sulfonamide repeating units. These polymers showed high catalytic activity in asymmetric reactions, enabling the enantioselective desymmetrization of cyclic anhydrides.
Current methods for determining compound chirality rely on X-ray diffraction and computer analysis. Recent advancements have improved the accuracy of absolute structure assignment, enabling reliable results for compounds containing heavy atoms.
The new TSRI method enables the construction of beta-chiral centers in chiral drug molecules by selectively replacing a hydrogen atom. This breakthrough accelerates the development of chiral drugs, which are often necessary for treating diseases with asymmetrical molecular structures.
A collaboration of Chinese and U.S. chemists has developed a highly efficient new method to convert carbon-hydrogen bonds into nitriles, common components of bioactive molecules used in medicinal and agricultural applications.
Researchers at UWM create a solid chiral catalyst that preferentially forms one enantiomer of a molecule, addressing the issue of inconsistent handedness in pharmaceuticals. This breakthrough could lead to safer and more effective medications.
Researchers have developed iron catalysts that can diversify chiral amino acids into 21 different structures while preserving their handedness. This technology allows for the creation of modified peptides or entirely new structures, expanding the pool of unnatural chiral amino acids available to researchers.
A team of researchers at Nagoya Institute of Technology has developed a method to synthesize complex, versatile materials from starting materials with low reactivity. The synthesis uses the catalytic Mannich reaction to produce chiral imidazolines with high yield and stereoselectivity.
Researchers at Harvard developed an ultra-compact flat lens that can resolve both spectral information and chirality of objects. The device has significant potential for various fields, including biology and pharmaceuticals.
Scientists at Washington University in St. Louis have developed a method to control the direction of light emission in microlasers using an exceptional point. By exploiting this physical phenomenon, they can create consistently directed photons, which is crucial for reliable photonic signals and applications.
Researchers have detected a chiral molecule called propylene oxide in Sagittarius B2 North, a cloud of gas and dust in the Milky Way galaxy. This discovery sheds light on the origin of homochirality on Earth, which is a phenomenon where life forms predominantly use left-handed molecules.
Researchers detected propylene oxide, a chiral molecule, in the Sagittarius B2(N) molecular cloud using radio astronomy. The finding sheds light on the origins of life and homochirality, with implications for understanding life elsewhere in the universe.
A team of scientists has discovered the first complex organic chiral molecule in interstellar space, propylene oxide, near the center of our Galaxy in a star-forming cloud. The detection opens the door for further experiments to determine how molecular handedness emerges and why one form may be more abundant than the other.
Researchers have developed a new method for synthesizing phenyl-substituted 3,6-Dihydro-2H-pyran derivatives with high enantiomeric purity. The results showcase the potential of this approach for producing pharmaceuticals and other valuable compounds.
Researchers designed a helix-shaped supercrystal composed of quantum dots to separate organic molecules and enhance drug synthesis. The chirality of the supercrystal allows for accurate detection of chiral biomolecules, enabling precise identification of enantiomers in pharmaceuticals.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have created compact holograms using nanostructures sensitive to light polarization, improving anti-fraud holograms and wearable optics. These holograms can encode multiple images and protect against counterfeiting.
ICIQ researchers have developed a new radical route for synthesizing chiral molecules, combining enantioselective iminium ion chemistry and photoredox catalysis under mild conditions. This breakthrough could lead to more sustainable and responsible stereoselective chemistry.
A group of UK researchers discovered a new type of optical activity by breaking the symmetry of metamaterials with reflected light. This enables novel applications such as polarization rotating and circularly polarizing beam splitters and mirrors, as well as optical isolators for circularly polarized light.