Articles tagged with Porphyrins
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Scientists from the University of Tokyo have created a filter that can capture nanoparticles such as viruses while maintaining air flow, resulting in improved user comfort. The filter uses nanosheets with porphyrin molecules and is capable of achieving a particle filtration efficiency of 96%, exceeding N95 mask requirements.
Researchers synthesized three porphyrin-based COF materials with tunable structural distortion, revealing correlations between linker distortion and material properties. The NN-Por-COF photocatalyst exhibits exceptional CO2 reduction performance under simulated industrial flue gas conditions.
Researchers at Doshisha University have developed a synthetic, nontoxic antidote for hydrogen sulfide poisoning. The new compound, met-hemoCD-I, converts toxic hydrogen sulfide into harmless sulfite and sulfate ions.
The study probed the electronic structures of metal and ligand sides using soft X-ray absorption spectroscopy, revealing differences in energy shifts between cobalt and iron protoporphyrin IX complexes. The results show that CoPPIX maintains its five-coordination geometry in aqueous solution.
Scientists from Trinity College Dublin created a computer program that visualizes molecular structure in the style of Piet Mondrian. The program uses blocks of color to represent symmetry and shape, making it easier to understand complex molecular interactions.
Scientists have applied time-resolved serial femtosecond crystallography (TR-SFX) to study molecular motion in real-time with atomic resolution, revealing three pathways of structural change in a porous coordination network sample. This breakthrough unlocks new opportunities for investigating chemical systems and material science.
A team of researchers from Japan has developed hemoCD-Twins, a synthetic porphyrin compound that acts as an antidote for both carbon monoxide and hydrogen cyanide poisoning. In mouse models, the compound resulted in an 85% survival rate and rapid recovery with low toxicity.
G-Quadruplex DNA structures play a crucial role in regulating genes and cell processes, but their visualization is challenging due to the dynamic nature of double standard DNA. Fluorescence-active small molecule probes have emerged as a real-time visualization method, enabling researchers to detect G-quadruplexes with high selectivity.
Charged porphyrins enable researchers to study π-electronic ion pairs and their interactions, leading to the creation of electronic materials with unique properties. The study reveals fascinating new properties of stacked ion pairs and their potential applications in fields like nanomagnetism and ferroelectrics.
Researchers have successfully formed rings made of three pyrroles for the first time, which could be used to produce compounds with unique properties. The discovery explains why tripyrrolic macrocycles were not observed before due to strain issues.
Researchers at Arizona State University have developed a synthetic diiron-containing porphyrin that can efficiently catalyze the conversion of radiant energy from the sun into chemical energy. This breakthrough has potential applications in creating non-fossil-based fuels and electrochemical cells for renewable energy storage.
Scientists successfully synthesized cyclo[9]pyrroles via oxidative coupling of terpyrrole, showing intense absorption at 1,740 nm. The molecular structure and electronic properties were analyzed using NMR and X-ray diffraction, providing insights into the optical and physical properties of porphyrinoids.
Research team from Shaanxi Normal University investigates the effect of alkaline metal cations on electrocatalytic CO2 reduction reaction using Fe porphyrins. The results show that adding Na+ and K+ ions significantly improves catalytic activity, with K+ enhancing currents more effectively.
Porphyrin molecules have electrical and optical properties that can be tailored for molecular-based materials and quantum information technologies. Researchers will develop a comprehensive database for porphyrins and metal-porphyrins with experimental and theoretical values, including response functions and conductance curves.
A new biologically active porphyrin compound was isolated from Ophiura sarsii, which may be used to make photodynamic therapy more affordable. The compound has been shown to have antitumor effects and could potentially be used to treat triple-negative breast cancer and other cancers.
Researchers at Tokyo University of Science explore the structure of porphyrin derivatives to selectively target cancer cells and improve drug delivery. They found that meso-derivatives accumulate in cells at 3-fold higher amounts than β-derivatives, and that smaller functional groups allow better aggregation.
Scientists at the Institute for Basic Science successfully synthesized a large organic cage composed of multi-porphyrin units without using templates. The P12L24 cage has a truncated cuboctahedral structure and an inner cavity diameter of 4 nm, making it suitable for encapsulating large guest molecules.
Researchers have synthesized a porphyrin polymer that can capture precious metals from chemically digested electronic waste. The polymer, COP-180, shows high efficiency in capturing gold, with an estimated worth of $64 per $5 of the material.
Researchers at Trinity College Dublin engineer molecular sensors based on porphyrin pigments, which can detect and capture pollutants. The novel sensors exploit the shape of porphyrins to mimic a Venus flytrap's opening leaves, enabling selective binding of target molecules.
Researchers at Kyoto University have made significant advancements in dye-sensitized solar cells by introducing a new molecular dye that enhances power conversion efficiency to 10.7%, surpassing previous records. This breakthrough has the potential to revolutionize the field of sustainable energy.
Researchers have designed a new material that uses self-assembly to create an efficient catalyst for hydrogen fuel cells. The catalyst is made from a combination of cobalt and ruthenium molecules that assemble themselves into the desired structure, allowing for large-scale production at a lower cost than current platinum-based catalysts.
Scientists have reconfigured porphyrins to exploit their special properties by 'turning them inside out'. This discovery opens new horizons for these natural pigments as efficient metal-free catalysts. The findings could lead to applications in chemistry, biochemistry, physics and beyond.
Scientists have discovered a new type of rare molecules whose properties can be controlled by changing an external magnetic field. These paramagnetic molecules, part of the porphyrin class, are closely related to photosynthesis and respiration in living organisms.
Scientists at Johannes Gutenberg University Mainz isolate and analyze gold in the rare +II oxidation state for the first time. The stabilization of this labile ion is achieved by a porphyrin macrocycle, allowing researchers to investigate its unique properties and behavior.
Researchers from KIT developed a novel material based on porphyrin to speed up rechargeable battery charging. The new material allows for high-performance energy storage and supercapacitors with exceptional properties.
Researchers developed a handheld device to detect cyanide fishing, which can harm coral reefs and fish. The device uses porphyrins to bind thiocyanate, a metabolite secreted by fish exposed to cyanide.
Researchers discovered rare genetic variations in the ABCB6 gene, which is associated with severe porphyria symptoms. The variants were more common in patients with life-threatening symptoms and improved understanding of potential treatments.
Researchers used density functional theory to understand the self-assembly of porphine molecules on copper and silver surfaces. They found that weak van der Waals interactions were the largest contributor to molecule-surface interaction, and surface-mediated molecule-molecule interactions occurred at higher coverages.
Researchers at Technical University of Munich successfully assembled chains of up to 90 porphine units using a silver surface, opening doors for the development of ordered long molecular structures. These 'tapes' have potential applications in electronic devices and data storage.
Researchers at University of Texas at Austin synthesize stable anti-aromatic compound and intermediate state, enabling comparison between aromatic and anti-aromatic properties. The discovery has potential implications for industry, medicine, and information storage.
Researchers at TUM have developed a molecular switch with a surface area of one square nanometer, controlled by transferring protons within a porphyrin ring. The switch can be set to four distinct states and operated up to 500 times per second.
Researchers refute hopping mechanism, showing that porphyrins' conductivity is influenced by temperature and length, potentially suitable for quantum computing applications. The study highlights the potential of porphyrins as electronic components due to their wave nature.
Researchers at the University of Pennsylvania have developed a color-changing stress sensor using polymersomes and porphyrins, allowing for early detection of system failures. The technology has the potential to monitor drug delivery and track stress in cellular membranes.
Researchers discovered that carbon monoxide binds to metalloporphyrins in a unique saddle-shaped configuration, contrary to previous expectations. This finding has significant implications for the development of catalyzers and sensors.
Researchers at Caltech develop a targeted cancer therapy using a gallium corrole that can detect and eliminate breast cancer tumors in mice, with fewer side effects than traditional treatments. The therapy shows promise for treating aggressive HER2+ breast cancers with lower toxicity.
Scientists have made precise measurements of a key phenomenon in solar cells, shedding light on fundamental processes and paving the way for more efficient designs. The findings provide a crucial understanding of charge separation in chain-like structures.
ASU researchers designed a molecule that mimics nature's non-photochemical quenching process, regulating light intensity and converting sunlight into chemical energy. The molecule adapts to its environment, reducing the efficiency of energy conversion as light intensity increases.
The molecule features two freely spinning rings that can adopt either a Hückel or Möbius topology, depending on the solvent and temperature conditions. This allows it to exhibit distinct colors in each configuration.
Scientists have created highly efficient infrared light-emitting diodes (LEDs) that can be used in night-vision devices, emitting a reddish-orange glow. The LEDs use a phosphorescent platinum porphyrin complex as a doping agent to improve efficiency and emit light for longer periods.
Scientists have engineered a molecular complex that can split water into hydrogen and oxygen using solar energy, providing an alternative to traditional electrolysis methods. This breakthrough could pave the way for more environmentally friendly production of hydrogen gas for use as a clean fuel source.
Researchers at St. Jude Children's Research Hospital have discovered that the protein ABCB6 is crucial for producing heme, a molecule essential for red blood cells to carry oxygen. The team found that ABCB6 helps regulate the production of heme by ferrying in porphyrins, which are then converted into heme inside the mitochondria.
Researchers discovered that blue light can rapidly kill certain oral bacteria associated with periodontitis, and may restore a healthy bacterial balance in the mouth. A handheld device using this technology is being developed to combat periodontal disease.
Researchers have discovered that a T arrangement in molecular electronic switches enables efficient communication between distant molecules, facilitating the on and off states of the switch. This finding broadens design possibilities for molecular photonics, solar energy conversion, and nanotechnology.
Researchers at UC Davis have successfully assembled a novel calixarene-porphyrin molecule, which shows promise for use in biological and chemical applications. The discovery could enable the development of efficient sensors and filters, including one to detect spoiled seafood.