Chemists at the Nagoya Institute of Technology report a metal-free method to control cationic polymerization that provides a new framework for higher quality industrial polymers. The reaction depends on weak halogen bonding and the addition of a small amount of ammonium salt to produce long, homogeneous polymers. The study can be read in Chemistry - A European Journal.
ETH researchers have discovered a new method to design stable foams. Their findings could make beer froth and ice cream last longer -- and revolutionise construction materials such as concrete.
Researchers made nano-sized balls of melanin aggregate into clusters called supraballs. Melanin appears black in individual nanoparticles. But altering spacing of the nanoparticles in the ball affects how the particles scatter light. A thin silica coating on the outside of melanin nanoparticles acts like a bumper, limiting how close the particles can pack together. Varying the diameter of the melanin core and the thickness of the silica shell creates supraballs in a range of colors.
The combination of a commercial iron-complex catalyst (ferrocene) and well-adjusted unconventional reaction conditions led to a highly selective, fast and reusable catalytic system for the mild oxidation of cyclohexane.
Experts at Queen's University Belfast have designed a flexible and organic alternative to the rigid batteries that power up medical implants.
Highly porous metal-organic frameworks have proved ideal for storing many chemicals, from carbon dioxide and hydrogen to water. A new tweak to MOFs has now produced a highly selective material for adsorbing carbon monoxide, which is used in many industrial processes, including as a component of syngas. Using only one-third the energy of a common process for capturing and reusing CO, it holds promise for more efficient recycling of CO in the steel industry.
Scientists at Cardiff University have created methanol from methane using oxygen from the air. Methanol is currently produced by breaking down natural gas at high temperatures. But researchers at Cardiff Catalysis Institute have discovered they can produce methanol from methane through simple catalysis that allows methanol production at low temperatures using oxygen and hydrogen peroxide. The findings, published today in Science, have major implications for cleaner, greener industrial processes worldwide.
Relatively little is known about the effects of extreme negative pressure on water molecules. Exploring a significant region of negative pressure through molecular dynamic simulations, researchers have now theoretically discovered a new family of ice phases. Called aeroices, these ices have the lowest density of all known ice crystals. The researchers report their findings this week in The Journal of Chemical Physics.
Research from Northwestern University sheds new light on the understanding of the measurement of polymer properties in diverse chemical industries such as plastics manufacturing and food processing, and the design of biosensors.
Researchers from Tokyo Institute of Technology and Kyoto University have developed an artificial receptor that can bind sucrose in water with exquisite precision. The achievement represents a leap forward for the development of biosensors, and provides new insights into our perception of sweetness.