It is now possible to obtain three-dimensional, high-resolution images of enzyme activity in tissue samples or whole organs—thanks to probe molecules that anchor fluorescent dyes within tissue as they are activated by enzymes. The organ being mapped is made transparent by a clearing process.
Hydrazine (N2H4) is a highly toxic organic amine that can spontaneously ignite or explode when exposed to strong oxidants, air, or high temperatures. It is classified as a Class B2 hazardous substance by the U.S. Environmental Protection Agency, the World Health Organization, and the International Agency for Research on Cancer, which underscores the significant risks it poses, highlighting the need for effective detection methods.
We've all been there—trying to peel a boiled egg, but mangling it beyond all recognition as the hard shell stubbornly sticks to the egg white. Worse, the egg ends up covered in chewy bits of adhesive membrane in the end.
New research has revealed the fundamental mechanisms that limit the performance of copper catalysts—critical components in artificial photosynthesis that transform carbon dioxide and water into valuable fuels and chemicals.
Heavy actinides—elements at the bottom of the periodic table, after plutonium—are radioactive, rare and chemically complex, making them notoriously difficult to study. Most studies conducted on these elements have traditionally been done one-compound-at-a-time or extrapolated from less toxic and non-radioactive surrogates, like lanthanides, that are safer to work with. As such, relatively little is known about the chemical properties of heavy actinides.
Criegee intermediates (CIs)—highly reactive species formed when ozone reacts with alkenes in the atmosphere—play a crucial role in generating hydroxyl radicals (the atmosphere's "cleansing agents") and aerosols that impact climate and air quality. The syn-CH3CHOO is particularly important among these intermediates, accounting for 25%–79% of all CIs depending on the season.
Catenanes are organic compounds with ring-like molecules that are mechanically interlocked. The mechanical locking system in such molecules is so robust that they can only be disentangled via covalent bond cleavage. A recent study has presented a new strategy for controlling the chirality—the property where a molecule has non-superimposable mirror images—of mechanically interlocked molecules (MIMs) like catenanes, without changing its overall shape via non-covalent means.
Scientists have developed a new technique to screen engineered enzyme reactions, which could lead to faster and more efficient creation of medicines and sustainable chemicals.
A collaborative research effort between UNIST and the Korea Institute of Science and Technology (KIST) has led to the successful synthesis of three novel porous materials by leveraging a data-driven structure prediction algorithm. These newly developed materials, modeled after zeolites, represent metal-organic frameworks (MOFs) with exceptional selectivity in gas separation, particularly for carbon dioxide (CO₂).
Researchers at the University of Bayreuth have found a way to make plastics more sustainable by utilizing sulfur waste from the petroleum refining process. They have developed a method that allows so-called dynamic sulfur bonds to be easily integrated into polyesters. Their findings have been published in the journal Angewandte Chemie International Edition.
A research team has developed the world's first eco-friendly silver (Ag) plating technology using a phosphorus (P) compound as a key plating component. This breakthrough technology enables silver plating without the use of highly toxic cyanide, by formulating an acidic plating solution based on phosphorus compounds that successfully produces uniform and stable silver thin films.
Arsenic is a nasty poison that once reigned as the ultimate weapon of deception. In the 18th century, it was the poison of choice for those wanting to kill their enemies and spouses, favored for its undetectable nature and the way its symptoms mimicked common gastrointestinal issues like stomach pain, diarrhea and vomiting.
Dry reforming of methane (DRM) is a widely studied method for converting carbon dioxide (CO2) and methane (CH4) into syngas. Traditionally, this reaction operates with a CO2/CH4 feed ratio of 1. However, future feedstocks—such as CO2-rich natural gas—are expected to contain much higher concentrations of CO2, requiring costly separation processes to achieve the desired CH4.
A new study led by a pair of researchers at the University of Massachusetts Amherst turns long-held conventional wisdom about a certain type of polymer on its head, greatly expanding understanding of how some of biochemistry's fundamental forces work. The study, released recently in Nature Communications, opens the door for new biomedical research running the gamut from analyzing and identifying proteins and carbohydrates to drug delivery.
The Korea Institute of Machinery and Materials (KIMM) has developed a compact, rapid pretreatment system capable of liquefying and homogenizing solid biological samples in under one minute.
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