Articles tagged with Hydrogen Bonding
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Mannitol outperforms other green additives in slowing re-polymerisation of cellulose-lignin linkages, cutting molecular weight and raising hydrogenolysis monomer yield. The additive forms an average of 28 hydrogen bonds per simulation box, effectively capping sites where carbocations normally form.
Researchers have solved the crystal structure of tetra-n-butylammonium bromide hydrate (TBAB) hydrate, a semiclathrate hydrate used in air conditioning. The unique tetragonal superstructure explains its heat storage characteristics and provides new design principles for hydrate-based functional materials.
Researchers developed a strategy to regulate hydrogen bond networks at electrolyte-electrode interfaces, accelerating proton transfer in CO2 reduction reactions. The approach involves introducing extra catalytic centers, such as cubic phase molybdenum carbide, to enhance water dissociation and facilitate proton generation.
Scientists at Ruhr University Bochum have shed light on the structure of supercritical water, finding that water molecules form few hydrogen bonds in this state. The research reveals that water behaves like a gas, with short-lived molecular interactions between hydrogen and oxygen atoms.
Researchers developed Janus-type supramolecules that form stable ribbon-type assemblies, guiding the arrangement of ion channels across lipid membranes. The supramolecular channels mediate efficient and selective K+ transport, disrupting cancer cell balance and inducing apoptosis.
Researchers have discovered a new method to create supramolecular qubits using non-covalent bonds, paving the way for scalable and low-effort material development. This breakthrough has significant implications for quantum technology advancements in molecular spintronics.
Researchers developed AshPhos, a ligand that facilitates the formation of carbon-nitrogen bonds using inexpensive materials. The tool has potential applications in pharmaceuticals, nanomaterials, and degrading PFAS pollutants.
Researchers developed a novel cyclic molecule that selectively traps phosphate species through multi-point hydrogen bonding in harmony with water molecules. The findings provide guidelines to design new cyclic molecules for aqueous environments, significant for materials development.
Researchers developed chlorophyll-based structures with controlled hierarchical stacking, mimicking natural photosynthetic systems. The study demonstrates the potential for creating materials that surpass natural capabilities in efficiency and adaptability.
Researchers have developed a simple model system to break down fibrils into their constituent single units or liquid droplets. This discovery has the potential to treat neurodegenerative diseases such as Alzheimer's and Parkinson's by targeting pathological fibrils.
Researchers used high-resolution IR spectroscopy in superfluid helium nanodroplets to investigate hydrogen sulphide molecules. The study found that the binding between H2S molecules is more floppy in the ground state, but becomes similar to water upon excitation.
EPFL researchers have developed correlated vibrational spectroscopy (CVS) to measure the behavior of water molecules participating in hydrogen bonds. The method allows for direct measurement of electronic charge sharing and H-bond strength, enabling precise characterization of molecular-level details in various materials.
Researchers create magnetically switchable materials by introducing chiral hydrogen bonds, allowing precise control over electron transfer. The study highlights the importance of molecular chirality in material performance.
Researchers at Pohang University of Science & Technology developed a non-fluorinated battery system to comply with environmental regulations and enhance battery performance. The innovative 'APA-LC' system, entirely free of fluorinated compounds, shows improved oxidation stability and higher capacity retention.
Researchers developed a one-pot process to transform aromatic ketones into esters, simplifying the reaction process, reducing reaction times, and minimizing purification steps. The method enables seven different chemical transformations and has shown notable stability and reusability, making it scalable for industrial applications.
A rhodium-catalyzed [2+2+1] cycloaddition reaction expands the possibilities for creating complex organic molecules. The researchers achieved high enantiomeric excess values of 94-99% using phosphine ligands, enabling the synthesis of diverse compounds.
Researchers use data sonification to convert molecular data into sounds, revealing how hydrogen bonds contribute to protein folding. The process involves complex interactions between water molecules and amino acids, with faster bonds speeding up folding and slower ones slowing it down.
Researchers at the University of Vienna have developed a novel C–H activation reaction that enables the selective targeting of specific carbon-hydrogen bonds. This breakthrough provides new insights into molecular interactions and opens doors to synthetic pathways previously closed, potentially contributing to drug discovery.
A research team at Waseda University has discovered a family of poly(thiourea)s (PTUs) with exceptional optical properties, including transparency over 92% and a refractive index of 1.81. The polymers can be easily degraded into simpler molecules, making them suitable for sustainable optoelectronic applications.
Researchers used operando spectroscopy to study the oxygen evolution reaction in iridium oxide catalysts. The team found that binding of reaction intermediates to the electrode was controlled by long-range interactions between the intermediates and the solution, which depended on pH.
Researchers at Lawrence Berkeley National Laboratory have developed a new technique to study the breakdown of cellulose by enzymes, revealing that hydrogen bonds in the complex molecule act as obstacles. The approach uses infrared light and operando spectroscopy to provide real-time snapshots of the sample, overcoming past limitations.
Researchers at University at Buffalo have discovered a way to create strong and effective fuel cell catalysts that approach the performance of platinum. By adding hydrogen to the fabricating process, they were able to balance durability and efficiency, potentially making fuel cells more affordable and polluting-free.
Researchers at IISc have developed a novel method to improve pharmacokinetic properties of macrocyclic peptides, which are used in pharmaceutical industries worldwide. By substituting oxygen with sulphur in the backbone of these peptides, they increase resistance to digestive enzymes and lipophilicity, thereby boosting bioavailability.
A research team at Göttingen University has developed plasmonic molecules from nanoparticles using a novel process that precisely arranges the particles. This breakthrough enables the creation of large quantities of these compounds, which can be used for various functions in nanotechnology.
A team of researchers from Chiba University elucidated the structure and dynamics of Ho-(DBM)3·H2O complex using molecular dynamics simulations. The study revealed unique properties of water in seven-coordinate lanthanide complexes, including characteristic vibrational modes and hydrogen bond dynamics.
The study reveals that the hydration layer on sapphire is non-uniform due to local distributions of surface OH groups, whereas α-quartz has a uniform hydration layer. The interaction force between oxides and water also varies significantly between the two crystals.
A recent study published in Applied Physics Letters reveals the dynamics of water molecules in tetra-n-butylammonium bromide semiclathrate hydrate using quasi-elastic neutron scattering. The research found that water molecules rapidly reorient, and their motion is consistent with breaking hydrogen bonds.
Researchers from the University of Iowa and Brookhaven National Laboratory create 14 organic-inorganic hybrid materials, including seven entirely new ones, to advance clean energy and safe nuclear energy. The study reveals new bonding mechanisms and insights into material separations and recycling.
Researchers developed a mechanically tough gel electrolyte to protect lithium metal anodes, significantly improving cycling stability. The achievement may facilitate practical use of high-performance lithium metal anodes in batteries.
Scientists at the National University of Singapore have developed a new method for synthesizing organosilanes using eosin Y, a low-cost and readily available dye molecule. This enables stepwise customised functionalisation of multihydrosilanes to access fully substituted silicon compounds.
Researchers at Tokyo Institute of Technology have discovered a new approach to improve the performance of thermoelectric materials by substituting hydrogen for oxygen. This substitution reduces thermal conductivity while maintaining high electronic conductivity, leading to improved thermoelectric conversion efficiency.
Researchers engineered a lightweight material by fine-tuning interlayer interactions in 2D polymers, retaining desirable mechanical properties even as a multilayer stack. The material's strong interlayer interaction is attributed to hydrogen bonding among special functional groups.
A new zirconia-based catalyst can break down polyolefin plastics into new, useful products, reducing plastic waste and recovering value. The catalyst is made of earth-abundant materials and demonstrates high selectivity and activity.
A team of researchers has identified the key stumbling block of a common solid-state hydrogen material, MgH2. The study, published in Journal of Materials Chemistry A, reveals that a 'burst effect' during dehydrogenation leads to sluggish kinetics, hindering commercial application.
The study reveals that N,N-dimethylformamide (DMF) separates carbazole and anthracene due to strong intermolecular hydrogen bonds. Researchers used advanced liquid-state NMR techniques to analyze the interaction mechanism, finding a C=O···H-N bond between DMF and carbazole.
Researchers found that adding water increases selectivity of 2,3-butanediol generation by 57%. Hydrogen bonding stabilizes radical intermediates, avoiding oxidation and promoting selective coupling. The study reveals non-chemical bonding interactions can steer reaction paths for selective photocatalysis.
Researchers from the Max Born Institute found that magnesium ions reduce ultrafast fluctuations in water's hydration shell, slowing solvation dynamics. The study reveals a short-range effect of individual ion pairs on dilute aqueous systems.
A new process developed at the University of California, Berkeley, breaks down polyethylene plastics into propylene, a feedstock for high-value plastics. The process uses catalysts to depolymerize polyethylene, producing 80% propylene and upcycling waste into valuable products.
Researchers have gained insight into the electronic structure of hydrated proton complexes, revealing that three inner water molecules are drastically modified by the proton. The first hydration shell senses the electric field of the proton through Coulomb interactions.
Researchers have gained new understanding of solvation, a process that changes water's physical and chemical properties. Strong interactions between ions and water molecules are disrupted by electrostatic interactions, leading to changes in intermolecular energy transfer.
A team of researchers from Tokyo University of Science has developed a novel multi-proton carrier complex that shows efficient proton conductivity even at high temperatures. The resulting starburst-type metal complex acts as a proton transmitter, making it 6 times more potent than individual imidazole molecules.
Researchers have successfully mapped the potential energy surfaces of individual water molecules in liquid water at room temperature and normal pressure. This breakthrough uses X-ray analysis and statistical modeling to reveal the complex behavior of water molecules, shedding light on their role as a solvent.
Researchers developed a hot-melt tissue adhesive that can heal operative wounds without causing adhesions. The adhesive, made from biopolymers, transforms into a stable gel at body temperature and eventually decomposes, preventing postoperative complications.
Researchers successfully measured the wettability of graphene and other 2D materials using VSFG, a surface-selective tool that connects macroscopic and molecular-level properties. The study found that graphene's 'wetting transparency' diminishes with increasing layers, becoming hydrophobic at a certain point.
The CSD-Materials suite provides a comprehensive analysis of solid form properties, helping researchers explore intra- and intermolecular interactions. The suite's components, including Hydrogen Bond Propensity, Full Interaction Maps, and Aromatics Analyser, aid in identifying potential co-former or solvent interactions for new APIs.
A team from University of Science and Technology of China discovered the microscopic mechanism behind traditional Xuan paper's high strength and toughness. They developed a high-performance, high-haze transparent film with excellent properties, including high light transmittance, flexibility, and thermal stability.
Recent study uses advanced spectroscopy techniques to observe water molecules in superconcentrated salt solutions and identifies heterogeneity in solvation structure. This finding explains the unexpected fast lithium-ion transport in highly viscous electrolytes.
Researchers directly observe hydrogen bonds in water for the first time, revealing effects that could explain water's strange properties and inform life on Earth. The study uses SLAC's MeV-UED to detect subtle molecular movements, providing a new window into understanding water's role in chemical and biological processes.
Researchers from Federal Research Centre of Biotechnology RAS deciphered activation mechanism of Orange Carotenoid Protein (OCP) upon exposure to light. The study used structural biology, biochemistry, spectroscopy, and quantum chemistry methods to determine OCP's crystal structure with high spatial resolution.
Researchers have discovered the biosynthesis pathway of 2-aminoadenine, a new DNA nucleobase found in bacteriophage S-2L. The pathway was identified through a homolog of the known enzyme succinoadenylate synthase and indicates that new bases can be enzymatically incorporated into genetic material.
Scientists have observed unusually fast picosecond electron transfer in peptides mediated by hydrogen bonds, a rate 1 million times faster than previously known. This discovery has the potential to improve chemical transformations, energy conversion, electronic devices, and photonic technologies.
Washington University researchers found that hydrogen bonding functional groups on amines play a key role in controlling dicamba volatility. The team's study suggests that amines with more hydrogen bonding sites decrease dicamba's ability to become airborne, potentially leading to improved formulations and reduced crop damage.
A team of scientists used THz pulses to study the intermolecular motion of liquid water, revealing a hydrogen bond harmonic oscillator model and polarizability anisotropy on sub-picosecond scales. The results provide insights into the transient structure of liquid water and its interaction with solvent molecules.
Researchers have unraveled the mystery of the Ubbelohde effect by identifying two isotopic effects governing water hydrogen bond formation. The findings reveal that rotational motion and quantum anharmonic coupling play crucial roles in determining bond strength and length.
Göttingen researchers observe mobile protons in proteins, revealing instantaneous communication between distant sections. This breakthrough resolves decades-long controversy over low-barrier hydrogen bonding's role in protein signaling.
Scientists at McGill University have successfully created strong, stable attractions between heavier elements in the periodic table, using halogen bonds. This breakthrough could lead to the development of new materials resistant to water and humidity, revolutionizing fields such as electronics and pharmaceuticals.
Researchers at Carnegie Mellon University used nuclear resonance vibrational spectroscopy to probe the hydrogen bonds that modulate the chemical reactivity of enzymes, catalysts, and biomimetic complexes. The study provides valuable information on how systematic changes to hydrogen bonds within the secondary coordination sphere influen...
Researchers at TU Wien have successfully synthesized high-tech dyes using plain water under high temperatures, breaking the need for toxic solvents. The new method utilizes water's properties to dissolve organic substances and crystallize the dyes, enabling their use in organic electronics and demanding applications.
A team of Swiss researchers used THz spectroscopy to measure the surprisingly slow response of solvating water after changing the charge distribution of a dissolved dye molecule. The study found a timescale around 10 picoseconds, which is slower than expected for liquid water.
Researchers at Kazan Federal University are developing new hydrate inhibitors using water-soluble polyurethanes and biodegradable compounds like polyvinyl alcohol and glucose. The goal is to create affordable and effective solutions to prevent gas hydrates from forming, which can cause serious technological disasters.