A research team has developed a fluorescent probe that changes from red to green as it detects uranyl ions, a form of uranium that can contaminate water. Made from europium, zinc and an organic ligand, the probe measured uranyl concentrations down to 51 nanomolar in laboratory tests. A smartphone camera could also read the color change, suggesting a route toward portable water monitoring where laboratory instruments are unavailable. Tests with lake water and seawater showed promising accuracy, although broader testing in complex environmental samples is still needed.
A new clue to how lithium may affect the brain has been found in new research into quantum biology at the University of Surrey. The study investigates how a quantum property of lithium atoms could influence chemical reactions involving vitamin C in the brain.
Hydrogen is a promising low-carbon energy carrier, but its low volumetric energy density makes storage and transportation difficult. Methanol offers an attractive alternative because it is liquid under ambient conditions, contains 12.5 wt% hydrogen and can be transported using existing fuel infrastructure.
Chemists routinely optimize reactions to maximize the yield of their desired products, but understanding why those reactions work can require laborious experiments that track reactions through time.
A team of researchers led by the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) developed a powerful new approach that enabled them to directly observe how electrons interact with defects in advanced semiconductor devices with an unprecedented level of detail.
Professor Do Hyun Ryu's research team in the Department of Chemistry at Sungkyunkwan University (SKKU) has developed two new asymmetric catalytic methods for the precise synthesis of complex molecules using chiral organic catalysts. The team demonstrated that a single catalyst can promote two different carbon-carbon bond-forming reactions with high selectivity.
Polyether ether ketone (PEEK) composites face concurrent ultraviolet (UV) and thermo-oxidative aging in real-world service environments, yet the synergistic effects remain poorly understood.
Researchers characterized four commercial blue pigments with three conservation binders using thermal analysis, ATR-FTIR, SEM-EDS, and microscopy, revealing marked differences in thermal behavior and predominantly non-homogeneous pigment-binder mixtures. Most notably, a commercial manganese blue contained no detectable manganese, while 11 of 12 pigment-binder combinations showed non-uniform behavior, highlighting the value of verifying material composition and compatibility before conservation use.
Korea Institute of Materials Science (KIMS), led by President Chul-jin Choi, announced that a research team led by Principal Researcher Sung Mook Choi of the Energy & Environment Materials Research Division, in collaboration with research teams led by Professor Min Ho Seo of Pukyong National University and Professor Won Bae Kim of Pohang University of Science and Technology (POSTECH), has developed a highly durable platinum-nickel (PtNi) hydrogen evolution catalyst that suppresses nickel (Ni) leaching through atomic ordering.
Some of nature’s most important chemical reactions rely on the coupled movement of negatively and positively charged particles. These processes play central roles in photosynthesis, catalysis and biological energy conversion yet remain difficult to observe.
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