Organic chemists develop new catalyst to selectively activate carbon-hydrogen bonds
Phys.org/ Chemistry
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3d ago
Substituted aromatics are among the most important building blocks for organic compounds such as drugs, crop-protecting agents, and many materials. The function of the molecules is determined by the spatial arrangement of the different building blocks, the substitution pattern ..read more
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The science behind ice-melt products
Phys.org/ Chemistry
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3d ago
As picturesque as winter weather can be, snowy scenes often present a less desirable, slippery companion: ice. It coats our roadways, clings to windshields and serves as a general hurdle in daily life during the coldest months of the year ..read more
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Advancing our mastery of stereoselective photoredox reactions to produce mirror-image molecules
Phys.org/ Chemistry
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3d ago
Researchers of the Max-Planck-Institut für Kohlenforschung have expanded the molecular toolbox for efficient, targeted syntheses: To do so, they use a very special catalyst—and the energy of light. The result of their work has now been published in Science ..read more
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Micelles—the meeting place boosting reactions and interactions
Phys.org/ Chemistry
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3d ago
The occurrence of chemical reactions between like-charged compounds in aqueous solutions is very slow since particles repel each other. A recent breakthrough published in Nature Communications shows a new way to control chemical reactions by charge neutralization and increase in effective concentrations of reactants. The joint research teams led by prof. Robert Hołyst from the Institute of Physical Chemistry, Polish Academy of Sciences, discovered that using compounds with a large surface charge density speed up the reactions up to 5-million fold ..read more
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A rainbow of force-activated pigments for identifying stress
Phys.org/ Chemistry
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3d ago
Stress isn't just the psychological pressure you feel in response to a looming deadline at work. It is also a description of the physical forces pushing, pulling, or twisting an object, structure, or material. Examples of stress include gravity dragging downward on a bridge, wind blowing against the side of a building, or even a waistband drawn taut by a big meal ..read more
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New mosquito repellents that work better than DEET
Phys.org/ Chemistry
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3d ago
In the age-old battle against mosquitos, DEET has proven effective at keeping this nemesis at bay, but the repellent is smelly and its protection is short-lived. Now, researchers report in the Journal of Agricultural and Food Chemistry that they have designed safe alternatives that have some advantages over DEET, including a nice smell and much longer protection from bites ..read more
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Researchers create a low-cost sensor that detects heavy metals in sweat
Phys.org/ Chemistry
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4d ago
Heavy metals such as lead and cadmium are present in batteries, cosmetics, food and other things that are part of everyday life. They are toxic when they accumulate in the human organism, potentially causing several health problems, but detecting them in body fluids requires expensive equipment and a controlled laboratory environment. Researchers at the University of São Paulo (USP) in Brazil have now developed a portable sensor made of simple materials to detect heavy metals in sweat, which is easily sampled ..read more
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Understanding of point defect mechanism boosts photovoltaic performance of antimony selenosulfide
Phys.org/ Chemistry
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4d ago
Recently, a research team led by Prof. Chen Tao from the University of Science and Technology of China (USTC) of the Chinese Academy of Sciences (CAS) revealed the formation and evolution of the point defect of antimony selenosulfide. This work was published in Advanced Materials ..read more
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Team develops strategy to regulate light absorption behaviors of titanium oxo clusters
Phys.org/ Chemistry
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4d ago
A research team has improved the solar energy absorption of titanium oxo clusters. Their work demonstrates an effective strategy for regulating the light absorption behaviors of these clusters by importing electron-rich heterometals. These results have potential applications in the field of solar energy where solar conversion currently faces certain limitations ..read more
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Copper transformed way the world works before, and it's about to do so again
Phys.org/ Chemistry
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4d ago
Copper is all around us. The metal is both ever-present and invisible in our world. Copper makes reading the words on this screen possible. And the global spread of artificial light, electric power and telecommunications all required ever-increasing quantities of copper ..read more
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