Nagoya University team develops ruthenium catalysts to hydrogenate inert amide bonds under mild conditions. Molecular design of the catalyst framework promotes a key step of the reaction, the transfer of hydrogen to the amide, to greatly improve reactivity. This new low-energy approach may enable designer peptide synthesis and facilitate break down of plastic waste into more useful compounds.
Recent interest in lignocellulosic fibers was devoted to improve the mechanical properties of polymers. But one of their main limitation is the poor compatibility and adhesion between these polar/hydrophilic fibers with most commercial resins being non-polar and hydrophobic. This problem has been partially solved using physical and chemical surface treatments, and/or the addition of a coupling agent (phase compatibilization).
Materials scientists have written the recipe on how to use an oddball enzyme to build new biomaterials out of DNA. The work provides instructions for researchers the world over to build self-assembling molecules for applications ranging from drug delivery to nanowires.
Students led by University of Utah materials science and engineering assistant professor (lecturer) Jeff Bates have developed a new, 100-percent biodegradable feminine maxi pad that is made of all natural materials and is much thinner and more comfortable than other similar products. The SHERO Pad uses a processed form of algae as its super-absorbent ingredient, resulting in a maxi pad that is effective, comfortable to wear and can break down anywhere from 45 days to six months.
When building with molecules, it is important to understand how they stick to each other. The problem is that the methods used to measure this are themselves an influencing factor on the process. In today's Nature Communications, researchers at Eindhoven University of Technology, led by Professor Bert Meijer, present a method that excludes this influence and which can measure how fast small molecules detach from a larger molecular entity dissolved in water.
Researchers have developed an oil-based 'bath,' or support system, that facilitates precise 3-D printing of silicon materials in a variety of shapes. They demonstrated the capability of this method by using it to create model tracheal implants and a functional fluid pump, among other items relevant to biomedicine.
Nagoya University team replicates unique color of bird plumage. Raspberry-like particle systems simulate the spongy texture of Stellar's jay's blue feathers. These findings represent a new approach to artificial structural color-based pigments.
Researchers at Sandia National Laboratories have developed new mathematical techniques to advance the study of molecules at the quantum level. Mathematical and algorithmic developments along these lines are necessary for enabling the detailed study of complex hydrocarbon molecules that are relevant in engine combustion.
Chemists designed a nickel catalyst that easily transforms petroleum feedstocks into valuable compounds like fatty acids. The process is environmentally friendly: not only it works at room temperature and atmospheric pressure, but also recycles carbon dioxide, contributing to the fight against climate change.
Electric fields can mobilize non-ionic particles to coat metal surfaces.