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Chemistry News - Biochemistry, Polymers, Materials Scienceнет даты 

The latest news stories on chemistry, biochemistry, polymers, materials science from Phys.org

1. Chemists introduce new copper-catalyzed C-H activation strategy21:24[-/+]

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Inspired by what human liver enzymes can do, Scripps Research chemists have developed a new set of copper-catalyzed organic synthesis reactions for building and modifying pharmaceuticals and other molecules. The new reactions are expected to be widely used in drug discovery and optimization, as well as in other chemistry-based industries.

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2. Self-adjusted reaction pathway enables efficient oxidation of aromatic C-H bonds over Co@Y catalyst20:42[-/+]

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The selective oxidation of aromatic C-H bonds has drawn significant attention in both industrial and fine chemistry due to its crucial role in converting readily- and cheaply-available aromatic hydrocarbons into high-value-added oxygenated products for diverse fields such as biology, medicine, fragrance, and agriculture.

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3. Some plant-based steaks and cold cuts are lacking in protein, researchers find20:37[-/+]

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Many plant-based meats have seemingly done the impossible by recreating animal products ranging from beef to seafood. But beyond just the taste and texture, how do these products compare to the real thing in nutritional value? A small-scale study published in Journal of Agricultural and Food Chemistry shows that while some "plant steaks" and "plant cold cuts" might be comparable to meats on some fronts, their amino acid content and protein digestibility fall short.

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4. Accelerating the discovery of new materials via the ion-exchange method20:02[-/+]

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Tohoku University researchers have unveiled a new means of predicting how to synthesize new materials via the ion-exchange. Based on computer simulations, the method significantly reduces the time and energy required to explore for inorganic materials.

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5. A hydrocarbon molecule as supplier and energy storage solution for solar energy16:08[-/+]

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Until now, the generation and storage of electricity from solar energy has been dependent on various devices, leading to conversion losses. That may change soon, as chemists at Friedrich-Alexander-Universitat Erlangen-Nurnberg (FAU) and other research institutes in Germany, Australia, the United Kingdom, Italy, Sweden and the U.S. are conducting research into a hydrocarbon molecule that can either convert sunlight into electricity or save the energy for a long time in a chemical form.

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6. Materials follow the 'Rule of Four,' but scientists don't know why yetЧт, 18 апр[-/+]

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Scientists are normally happy to find regularities and correlations in their data—but only if they can explain them. Otherwise, they worry that those patterns might just be revealing some flaw in the data itself, so-called experimental artifacts.

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7. Researchers realize hydrogen formation by contact electrification of water microdroplets and its regulationЧт, 18 апр[-/+]

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Direct utilization of water as a source of hydrogen atoms and molecules is fundamental to the evolution of the ecosystem and industry. However, liquid water is an unfavorable electron donor for forming these hydrogen species due to its redox inertness.

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8. Highly efficient and stable near-infrared phosphor for night vision and bio-imagingСр, 17 апр[-/+]

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Near-infrared (NIR) light source, characterized by non-destructive and rapid detection, has a wide range of applications in diverse fields including food testing, safety, sensing, agricultural production and biomedicine. The availability of a compact, highly efficient and low-cost NIR phosphor is a key factor in achieving its wide application.

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9. Coffee grinder, old tires spur creation of sulfur-free oilСр, 17 апр[-/+]

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Using a coffee grinder, a freezer and a furnace, researchers have discovered a chemical synergy between scrap tires and polystyrene can be harnessed to create sulfur-free, light oil.

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10. New plastic coating discovery gives greater functionality to 3D printingСр, 17 апр[-/+]

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Scientists and engineers have developed a new coating for plastic particles that are used in 3D printing, which significantly increases their functionality and opens up new possibilities for commercial application.

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11. Advanced nuclear magnetic resonance technique reveals precise structural, dynamical details in zeolitesСр, 17 апр[-/+]

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Zeolites are widely used in many industries, yet their intrinsic catalytic nature is not completely understood, due to the complexity of the hydroxyl-aluminum moieties.

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12. Cold Coulomb crystals, cosmic clues: Unraveling the mysteries of space chemistryСр, 17 апр[-/+]

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While it may not look like it, the interstellar space between stars is far from empty. Atoms, ions, molecules, and more reside in this ethereal environment known as the Interstellar Medium (ISM). The ISM has fascinated scientists for decades, as at least 200 unique molecules form in its cold, low-pressure environment. It's a subject that ties together the fields of chemistry, physics, and astronomy, as scientists from each field work to determine what types of chemical reactions happen there.

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13. From defects to order: Spontaneously emerging crystal arrangements in perovskite halidesСр, 17 апр[-/+]

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Perovskites are among the most extensively studied materials in modern materials science. Their often unique and exotic properties, which stem from perovskite's peculiar crystal structure, could find revolutionary applications in various cutting-edge fields. One intriguing way of realizing such properties is through the precise ordering of a perovskite's defects, such as vacancies or substitutions.

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14. Analyzing isotopes for nitrate in sake for combating beverage fraud in JapanСр, 17 апр[-/+]

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The demand for sake, a Japanese alcoholic drink, has increased globally. However, the rise in the popularity of sake has the potential for related beverage fraud. To address this issue, researchers from Japan have identified a novel method to authenticate the source of and differentiate between sake breweries. They measured the oxygen and nitrogen stable isotopes in nitrates within sake using denitrifying bacteria first. Their findings could help prevent mislabeling of the sake's brewery of origin.

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15. New benzofuran synthesis method enables complex molecule creationВт, 16 апр[-/+]

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In the field of organic chemistry, scientists are always looking out for new types of reactions to unlock synthesis routes for challenging compounds. Most of the progress that we have witnessed in pharmaceutics and agrochemicals over the past few decades can be traced back to the discovery of novel practical reaction pathways. Such pathways often involve the selective replacement of a functional group with another, the formation of aromatic rings, or the strategic cleaving of parts of a molecule. But what about the rearrangement of existing functional groups within a molecule?

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16. Research team identifies culprit behind canned wine's rotten egg smellВт, 16 апр[-/+]

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While it is the fastest growing sector of the wine-packaging market, canned wine faces a few hurdles. It's not considered as elegant as wine in a bottle, and it's not as popular as the formerly maligned "wine bag in a box." There is also the unfortunate fact—and there is no gentle way to put this—that canned wine occasionally smells like rotten eggs.

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17. New research could enable more—and more efficient—synthesis of metastable materialsВт, 16 апр[-/+]

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Ion exchange is a powerful technique for converting one material to another when synthesizing new products. In this process, scientists know what reactants lead to what products, but how the process works—the exact pathway of how one material can be converted to another—has remained elusive.

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18. Trash to treasure—Researchers turn metal waste into catalyst for hydrogenВт, 16 апр[-/+]

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Scientists have found a way to transform metal waste into a highly efficient catalyst to make hydrogen from water, a discovery that could make hydrogen production more sustainable.

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19. Researchers explore medicinal potential of lotus benzylisoquinoline alkaloidsВт, 16 апр[-/+]

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A research team has made progress in understanding benzylisoquinoline alkaloids (BIAs) in lotus (Nelumbo nucifera), highlighting their presence in various tissues and their potential for novel drug development.

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20. Researchers advance pigment chemistry with moon-inspired reddish magentasВт, 16 апр[-/+]

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An Oregon State University researcher who made color history in 2009 with a vivid blue pigment has developed durable, reddish magentas inspired by lunar mineralogy and ancient Egyptian chemistry.

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21. Chemists invent a more efficient way to extract lithium from mining sites, oil fields, used batteriesВт, 16 апр[-/+]

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Chemists at the Department of Energy's Oak Ridge National Laboratory have invented a more efficient way to extract lithium from waste liquids leached from mining sites, oil fields, and used batteries. They demonstrated that a common mineral can adsorb at least five times more lithium than can be collected using previously developed adsorbent materials.

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22. Sustainable synthesis method reveals N-hydroxy modifications for pharmaceuticalsВт, 16 апр[-/+]

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Recently published research results enable preparative access to novel substances that carry a modification of a structural motif frequently found in pharmaceuticals.

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23. Researchers create new AI pipeline for identifying molecular interactionsВт, 16 апр[-/+]

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Understanding how proteins interact with each other is crucial for developing new treatments and understanding diseases. Thanks to computational advances, a team of researchers led by Assistant Professor of Chemistry Alberto Perez have developed an algorithm to identify these molecular interactions.

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24. New time-resolved ultraviolet photodissociation mass spectrometry strategy for target protein stability analysisВт, 16 апр[-/+]

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How mutations impact protein stability and structure dynamics is crucial for understanding the molecular mechanism of the disease and the targeted drug design. However, probing the molecular details of mutation-induced subtle structure dynamics is still challenging.

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25. L-cyclodextrins synthesized in the lab for the first timeВт, 16 апр[-/+]

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A team of chemists at Northwestern University has successfully synthesized three L-cyclodextrins in the lab for the first time. In their study, published in the journal Nature Synthesis, the group used a one-pot strategy to achieve the feat.

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26. Scientists develop maleic acid-treated bacterial cellulose gel for enhancing bone repairПн, 15 апр[-/+]

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The field of bone tissue engineering (BTE) is a promising avenue for addressing bone injuries and defects by constructing artificial scaffolds with bionic functionalities. Due to its unique 3D network structure, impressive mechanical properties, and excellent biocompatibility, bacterial cellulose (BC) has emerged as a captivating area of research in the realm of scaffold fabrication.

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27. Research revives 1800s photosПн, 15 апр[-/+]

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Researchers from Western University developed techniques for creating images from old, badly tarnished photographs. These techniques could also be used to study other historic artifacts and fossils and prevent corrosion in modern materials.

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28. Palladium nanocluster catalyst supports highly efficient and regioselective hydrogenation of epoxidesПн, 15 апр[-/+]

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Alcohols are widely applied in life sciences and the chemical industry. Selective hydrogenation of epoxides using hydrogen molecules as a reductant is considered to be one of the most facile and atom-economical strategies for alcohol synthesis. However, controlling the regioselective ring opening of epoxides remains a challenge.

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29. Video: Is there a quick fix for ocean acidification?Пн, 15 апр[-/+]

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Acidification is threatening the ocean's ability to pull carbon dioxide out of our atmosphere, so scientists and startups are looking to ocean-sized antacids to raise its pH.

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30. New catalyst allows energy-friendly ammonia production for fertilizers and alternative fuelПн, 15 апр[-/+]

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Researchers led by Satoshi Kamiguchi at the RIKEN Center for Sustainable Resource Science (CSRS) in Japan have discovered a greener way to produce ammonia, an essential compound used in fertilizers.

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