There are few pleasures greater than letting a piece of chocolate melt slowly on your tongue. Indeed, the proximity of chocolate's melting point to our own body temperature is one reason it is so widely appreciated.
Coffee grounds that usually end up being thrown away can have a second life as a raw material for producing biofuels and other high-value-added products. A study by the Universitat Rovira i Virgili (URV) has evaluated how to extract oil from coffee grounds efficiently while preserving the rest of the plant material so that it can also be used in other processes.
Chiral molecules can exist in left- and right-handed forms. Although these mirror-image forms may look almost identical, they can behave very differently in chemical reactions, biological systems and advanced materials. Preparing one mirror-image form in high purity is therefore an important goal in chemistry.
Anticancer prodrugs have attracted significant attention from the medical and scientific communities in recent years because of their potential to improve treatment precision while reducing side effects. These drugs are engineered to remain inactive until they are activated at specific sites or under particular physiological conditions within the body, at which point they release their therapeutic effect.
Modern research on secondary metabolites from microbes, plants and marine organisms has revealed a remarkable diversity of chemical structures and bioactivities with broad applications in biotechnology, agriculture and medicine. Most natural products are composed of primary biogenic elements such as carbon, hydrogen, nitrogen and oxygen.
Rotaxanes are dumbbell-shaped mechanically interlocked molecules in which one or more ring-shaped molecules are threaded through a linear segment, known as the axle. To keep the ring from sliding off, two bulky groups, sometimes called stoppers, are added to the ends of the axle. Making a rotaxane has always been as challenging as its structure suggests.
In drug discovery, building complex molecules quickly is the name of the game.
Light Emitting Diodes (LEDs) are used in everything from household lighting and mobile phones to large display screens. Improving their efficiency could reduce energy use and enhance performance across a wide range of technologies. A new study involving researchers from the University of Liverpool and the University of Strathclyde has demonstrated a powerful way to identify tiny crystal defects that can reduce the efficiency of LED materials. The advance could help scientists better understand how these defects form and ultimately support the development of more efficient electronic and optoelectronic devices.
Any loss of lithium reduces the capacity and service life of lithium batteries. Recent research suggested that lithium is lost to the current collector during charging. Researchers at Ruhr University Bochum, Germany, working with Professor Tong Li at the Helmholtz Institute Ulm and a team led by Professor Dominic Bresser at the Karlsruhe Institute of Technology, Germany, took a closer look at this hypothesis.
The growing presence of nanoplastics in the environment has highlighted the need for simpler detection methods, leading researchers at Science Tokyo to develop a rapid biosensor for detecting polystyrene nanoparticles in water. Tested in both model water samples and real water samples spiked with polystyrene nanoparticles, the device detected 50 nm particles within 20 minutes without labeling or extensive sample preparation. The technology could support efforts to understand and address nanoplastic accumulation in the environment.
EPFL researchers have discovered that a soft material originally optimized for 3D printing may solve a longstanding challenge in materials science: making 3D-printable elastomers both tough and durable.
Progress in chemistry is often gradual, with some of its most important advances taking years—sometimes decades—to unfold. A case in point is the discovery of a novel "ferrocenophane" from the class of compounds known as "sandwich molecules"—so named because of their particular structure. In a ferrocenophane, the "bread slices" are two carbon rings that enclose an iron atom as the sandwich "filling." A team of chemists at Saarland University has now succeeded in developing a highly unusual bent sandwich molecule that opens up new possibilities for designing iron-containing materials.
Researchers at the Department of Materials Engineering (MatE), Indian Institute of Science (IISc), and collaborators have developed a new lightweight cast aluminum alloy that is both exceptionally strong and remarkably ductile, overcoming one of the biggest challenges in the structural metallurgy of aluminum alloys.
New research is shedding light on longstanding debates over the behavior of ferroelectric materials when those materials are exposed to electric fields. The findings stem from the use of a novel technique that allows researchers to observe the real-time behavior of domain walls in ferroelectric materials as they are "poled" and "depoled."
A research team has presented a roadmap for developing an "artificial olfactory system" that detects odors like the human nose and analyzes them using artificial intelligence (AI) by leveraging metal-organic frameworks (MOFs). The team systematically organized and reviewed key research trends in electronic nose technology, from MOF material design to sensor implementation and AI-based odor pattern recognition. The research was led by Hyuk-Jun Kwon's in the Department of Electrical Engineering & Computer Science of Daegu Gyeongbuk Institute of Science and Technology. The work is published in the journal Progress in Materials Science.
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