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A series of epoxy resins has been synthesised by a team of chemists from Germany, who used renewable starting materials for a more environmentally friendly approach than conventional methods.
The resulting epoxy resins have highly desirable mechanical properties, such as high stiffness, that have not been seen before in bio-based resins. This makes the materials suitable for structural bonding applications and challenges the common perception that adhesives are too difficult to make from renewable resources because of poor performance issues.
‘Forensic fingers’ for crime scene investigation
A team of scientists in the United States has developed a wearable fingertip sensor to enable crime scene investigators to rapidly detect explosives and gunshot residue. Traditional forensic analysis is typically carried out in a central laboratory, which requires time-consuming processes s ... more
Electrospun polymer fibres better than non-woven polymer fibres at mopping up oil from oil spills
Electrospun polystyrene shell/polyurethane core fibres made by scientists in China have absorption capacities 2-3 times higher than reported for non-woven polypropylene fibres (widely used to clean up oil spills). Electrospun fibres are an ideal candidate for soaking up oil, as their struct ... more
Cheap, simple and efficient molybdenum carbide electrocatalysts for hydrogen production
US scientists have made an efficient catalytic system to split water that uses molybdenum carbide nanoparticles on a carbon nanotube support. Molybdenum and carbon are both low cost and abundant elements. Water splitting using sustainable energy sources, such as solar and wind power, has be ... more
Chemical sensing with 2D materials
During the last decade, two-dimensional materials (2DMs) have attracted great attention due to their unique chemical and physical properties, which make them appealing platforms for diverse applications in opto-electronic devices, energy generation and storage, and sensing. Among their vari ... more
Atomic hydrogen interactions with gas-phase coronene cations: hydrogenation versus fragmentation
Sequential hydrogenation of polycyclic aromatic hydrocarbon (PAH) cations drives a gradual transition from a planar to a puckered geometry and from an aromatic to an aliphatic electronic structure. The resulting H-induced weakening of the molecular structure together with the exothermic nat ... more
An intramolecular annulation strategy has been developed for the synthesis of tetrahydrobenzo[e]pyrano[4,3-c][1,2]thiazine derivatives by means of coupling of aldehydes with 2-(4-hydroxybut-1-yn-1-yl)-N-arylsulfonamides using a catalytic amount of silver hexafluoroantimonate in toluene at 8 ... more
Programmable structures from the printer
Researchers at the University of Freiburg and the University of Stuttgart have developed a new process for producing movable, self-adjusting materials systems with standard 3D-printers. These systems can undergo complex shape changes, contracting and expanding under the influence of moistur ... more
Binding of a second CO molecule observed
Through the biological fixation of the element nitrogen by the enzyme nitrogenase, organisms gain access to molecular nitrogen (N2) in the Earth‘s atmosphere, which is essential for building cellular structures. In addition, a vanadium-dependent variant of nitrogenase can reduce the toxic g ... more
Hybrid redox-flow battery with a long cycle life
Redox‑flow batteries store electrical energy in chemical compounds that are dissolved in an electrolyte. They are a particularly promising alternative to lithium‑ion batteries as stationary energy storage. A team headed by Prof. Dr. Ingo Krossing from the Institute of Inorganic and Analytic ... more
