Articles tagged with Chirality
Researchers developed a new iridium catalyst for the selective synthesis of chiral lactams, which are key building blocks in pharmaceutical agents. The catalyst achieves high selectivity by inducing hydrogen bonding between substrate and catalyst, leading to the production of desired compounds with minimal waste.
A new chiral triphenylene derivative forms a higher-order structure that preserves its ordered crystal properties even after being subjected to gravitational flow. This unique property has implications for the development of materials with long-range structural preservation, which could lead to breakthroughs in nanoscale technologies.
Researchers have discovered chiral surface excitons, particles that spin like planets and annihilate each other on the surface of solids, emitting photoluminescence. The finding has potential applications for devices such as solar cells and electronic displays.
Researchers at Rice University have created chiral polymers that can enable materials with unique properties, such as optical and sensing capabilities. The discovery could lead to the creation of metamaterials with tunable properties, including tough-but-flexible compounds with distinct functions.
Physicists at ETH Zurich have created acoustic metamaterials that interact differently with Weyl fermions of opposite chirality, a crucial aspect of particle physics. This discovery enables the manipulation of chiral channels, giving independent access to these particles in bulk systems.
Researchers at the University of Bath have successfully demonstrated a new physical effect that could lead to advancements in chemical manufacturing efficiency and quality control in personalized pharmaceuticals. The technique is 100,000 times more sensitive than standard methods used today, enabling precise measurements of chirality i...
A theoretical model has been developed to describe how chiral molecules can create a spin current, potentially revolutionizing electronic devices. The model predicts that certain circuits with four contacts will allow the detection of this effect.
Researchers have identified 10 genes encoding transaminases, which can synthesize compounds with special chirality. This breakthrough could aid bioprospecting and genetic engineering programs to produce new medicines.
Researchers at Georgia Institute of Technology discovered that RNA's chemical ancestors can spontaneously form spiral strands in plain water without catalysts or enzymes. The spiraling integrated another compound, forming a structure similar to RNA, and demonstrated the possibility of an early evolutionary path for RNA.
Researchers have developed a new method to monitor molecular aggregation in real-time, allowing for the analysis of conformational changes. The method uses the AACD effect and chiral molecules to track aggregation-annihilation circular dichroism, providing valuable insights into biological processes.
Scientists have created a system to probe biomolecules' chiral properties in real-time, providing insights into their biological function. The setup allows for the detection of enantiomers at picosecond resolution, overcoming previous limitations.
Researchers at Kanazawa University have developed a new synthesis strategy for chiral drugs by harnessing the potential of aldehyde-derived chiral hydroxycarbanions. This breakthrough enables the selective production of one enantiomer of chiral molecules, paving the way for the creation of complex drugs with desired chirality.
A dirhodium catalyst makes an inert C-H bond reactive, turning chemical 'trash' to 'treasure.' The catalyst achieves exquisite control over the reaction, producing value-added molecules with high selectivity and minimal byproducts.
Researchers from Kanazawa University investigated gut microbiota effects on kidney function and discovered that the gut microbiota produces D-serine, a substance protective for the kidney. Administering D-serine to normal mice mitigated kidney injury, suggesting its potential as a biomarker or medication for acute kidney injury.
Scientists have created a magnetic method to control the transport of chiral Majorana fermions, which has potential applications for braiding and quantum computing. The technique uses a Josephson junction and cavity to manipulate the fermion excitations.
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.
Research reveals that diabetics' enzyme can flip blood vessel cells, creating gaps three times more permeable than normal. Controlling this process could ease swelling, nerve pain, and infection risks.
Researchers have discovered a method to synthesize helical biomineral structures with opposite spiral directions by adding specific amino acids, shedding light on how certain biological structures can exhibit both rotations within the same species or individual organism.
The Rice University scientists found that the catalyst starts nanotubes with various chiral angles but redirects almost all of them to the fast-growing variant (12,6). The cause appears to be a Janus-like interface composed of armchair and zigzag segments.
Researchers at Osaka University have clarified the cellular mechanism behind left-right asymmetric organ morphogenesis using live imaging and computer simulations. The team discovered that 'cell sliding' is essential for this process, which may lead to breakthroughs in regenerating organs with tubular structures.
Alessandro Baroni's thesis work using chiral effective field theory has characterized neutrino interactions with nuclei at low energy. His calculations combined theoretical framework and ab initio computational methods, leading to results in agreement with previous phenomenological calculations.
Researchers at Osaka University synthesized S- and X-shaped double hexahelicenes, enhancing their chiroptical performance. Their study demonstrated the possibility of using these molecules as ideal chiral materials for advanced technologies.
Researchers have discovered a new type of magnetic particle-like object, chiral bobbers, which offer opportunities to encode digital data directly. Unlike skyrmions, chiral bobbers can flow freely without needing precise distances between successive data bit carriers.
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.