Conjugated tetraenes are important key substructures in electronic materials, natural products and pharmaceutical molecules. However, they are difficult to synthesize. Now, researchers in Japan have achieved a new synthetic route of conjugated tetraenes from inexpensive and easily available 1,3-butadiene and substituted acetylenes by a one-pot approach under mild conditions.
Phytoplankton blooms are one of the most important factors contributing to the efficiency of the carbon pump in the North Atlantic Ocean. To better understand this phenomenon, researchers have developed a new class of robots able to collect data in the ocean throughout the year. Using these unparalleled data, the researchers have identified the starting point for the explosive spring phytoplankton bloom.
Scientists have announced that they have built and tested a new biomaterial-based delivery system -- known as a hydrogel -- that will encase a desired cargo and dissolve to release its freight only when specific physiological conditions are met.
Material chemists have developed a superporous solid made up of a patchwork of metal ions and organic linkers (a metal-organic framework, or MOF) that can suck up to 200 percent of its own weight in atmospheric moisture. The technology could be applied to regulating humidity levels, particularly in confined environments such as aircraft cabins and air-conditioned buildings.
Data travels through thousands of miles of fiber optic cables underneath the world's oceans -- via pulses of light. And according to experts, the data in these cables is at great risk of being intercepted. However, a newly designed frequency comb might be an effective tool for data encryption.
A new design of algae-powered fuel cells that is five times more efficient than existing plant and algal models, as well as being potentially more cost-effective to produce and practical to use, has been developed.
To make a solid crystal, molecules are generally so tightly packed together there's no room for any movement. It means that solid crystals -- despite their strength and durability -- have generally been ignored as having any possible function as molecular machines. Researchers have now formed a crystal out of molecules that look like gyroscopes. The crystal is externally solid but contains moving parts.
A group of researchers specializing in quantum calculations has proposed a radically new computational approach to solving the complex many-particle Schrödinger equation, which holds the key to explaining the motion of electrons in atoms and molecules.
A nanostructured gate dielectric may have addressed the most significant obstacle to expanding the use of organic semiconductors for thin-film transistors. The structure, composed of a fluoropolymer layer followed by a nanolaminate made from two metal oxide materials, serves as gate dielectric and protects the organic semiconductor - which had previously been vulnerable to damage from the ambient environment.
Bilayer white graphene combined with a ceramic creates a multifunctional material with high strength and toughness, according to new research. The material may be suitable for construction and refractory materials and applications in the nuclear industry, oil and gas, aerospace and other areas that require high-performance composites.
Scientists have made a surfactant based on nanoparticle dimers, which is responsive to multiple stimuli. The nanosurfactant combines several characteristics of each 'active' molecular surfactant which allows a tremendous flexibility whereby liquid droplets can be manipulated.
Systems metabolic engineers defined a novel strategy for microbial aromatic polyesters production fused with synthetic biology from renewable biomass. The team produced aromatic polyesters from Escherichia coli (E. coli) strains by applying microbial fermentation, employing direct microbial fermentation from renewable feedstock carbohydrates.
A team of researchers has pioneered a new water-based air-conditioning system that cools air to as low as 18 degrees Celsius without the use of energy-intensive compressors and environmentally harmful chemical refrigerants.
Robotics experts have made a robot exoskeleton that can rapidly change its shape upon sensing chemical or thermal changes in its environment. And, they claim, these microscale machines -- equipped with electronic, photonic and chemical payloads -- could become a powerful platform for robotics at the size scale of biological microorganisms.
Carbon nanotubes bound for electronics not only need to be as clean as possible to maximize their utility in next-generation nanoscale devices, but contact effects may limit how small a nano device can be, according to researchers.