Alkyl Group

Polymers with carbon–carbon (C-C) bonds (C-C polymers) in the main chain skeleton such as polyethylene and polypropylene are important industrial materials and are utilized as common plastics.

Recently, the National Science Review published research from Prof. Jun Cheng (Xiamen University) and Dr. Jia-Bo Le (Ningbo Institute of Materials Technology and Engineering of Chinese Academy of Sciences). The research team used ab initio molecular dynamics simulation methods to study the microscopic properties of the electrochemical interface, and then applied these findings to understand the mechanism behind the…

While this field of study may go over the heads of many, for Dr. Sailu Munnuri, organic chemistry has always made sense. He successfully obtained a master's degree in organic chemistry from Osmania University and went on to secure a Ph.D. from the Indian Institute of Chemical Technology - Hyderabad, India.

One approach to treating cancer is photodynamic therapy using photo-uncaging systems, in which light is used to activate a cancer-fighting agent in situ at the tumor. However, suitable agents must be stable under visible light, have an anti-tumor effect in low-oxygen environments, and have the ability to be activated by low-energy tissue-penetrative red light—a combination of properties that is difficult to…

Article URL: http://www.chm.bris.ac.uk/motm/dimethylmercury/dmmh.htm Comments URL: https://news.ycombinator.com/item?id=32803892 Points: 2 # Comments: 0

Keto this. Keto that. Does anyone really know what it means? This may – or may not – help.

Professor Fu Yao and Associate Professor Lu Xi from the University of Science and Technology of China (USTC) have conducted a cobalt-hydride-catalyzed enantioselective hydroalkylation, enabling the efficient construction of chiral tertiary carbon centers at the benzyl position. The study has been published in Nature Synthesis.

Alkenes represent one of the most abundant classes of organic molecules, which are available in bulk quantities from petroleum and renewable resources, with various utilization in agrochemistry, pharmacy, and organic materials. Typically, the transformation of alkenes by cleavage of both the σ bond and π bond underpins a range of industrial processes and provides methods for the reconstruction of hydrocarbon…

By Chuck Sorenson, Ph.D., P.E., Lee Enterprises Consulting Special to The Digest Conventional jet fuel is made in oil refineries by a variety of processes that convert crude oil into intermediate streams that boil within the allowable range of jet fuel. These intermediates, called kerosene, are then blended together so that the final product meets […]

Researchers at the University of Toronto have incorporated a compound derived from beta-carotene, or β-carotene into a polymer that's fully degradable.

Catalysts boost many types of chemical reactions, from our bodies to the industrial production of compounds and controlled fuel combustion in a car. From solid to gaseous, no matter their formula, their role is to enhance the rate of chemical reactions to make many processes easier.

Chemists at the University of Amsterdam have developed a method to furnish a range of molecules with a trifluoromethyl group attached to a sulfur, nitrogen or oxygen atom. Their procedure, which is published in Science, avoids the use of PFAS reagents. It thus provides an environmentally friendly synthesis route for pharmaceutical and agrochemical compounds that rely on the presence of the trifluoromethyl group.

"Forever chemicals" is a hot news item. The public is paying attention to them because they stick around for very long periods of time – including in your body – where they bioaccumulate. This has caused concern that they may cause cancer, although this has not been proven. Why does this group of chemicals stay around for so long? Chemistry explains.

Pt-based catalysts have been extensively employed in catalytic propane dehydrogenation (PDH) processes, playing a crucial role in propylene production. However, monometallic Pt catalysts often exhibit inferior propylene selectivity due to the hydrogenolysis, rapid deactivation from coke deposits, and nanoparticle sintering. To address these challenges, various metals (Sn, Zn, Ga, Co, etc.) have been introduced to…

PFAS filters available for industrial waste are usually made of activated carbon. As this is comparatively expensive, researchers are looking for alternative filter materials for the so-called "eternal toxins," whose hazardous residues only degrade very slowly in the environment.

As an engineering plastic having high transparency and impact resistance, polycarbonate (PC) is employed in eyeglass lenses, camera lenses, DVDs, automobile headlights and bulletproof glass.

Plastic materials are prone to degradation by atmospheric oxygen. These auto-oxidation reactions occur at ambient temperature but become especially relevant during melt processing. Adding antioxidants to the polymers results in a pronounced slowing-down of the oxidation processes. Only in this way, the production of plastic parts by injection molding, for example, is possible.

Scientists are constantly exploring new ways to design novel functional materials with tunable electronic properties. One promising area of research on this front is the use of π-electronic systems (systems in which the electrons occupy the p-orbitals of the atoms) to create stacked assemblies that, in turn, can be used to develop novel organic semiconductors.

First insights into engineering crystal growth by atomically precise metal nanoclusters have been achieved in a study performed by researchers in Singapore, Saudi Arabia and Finland. The work was published in Nature Chemistry.

Despite being some of the most versatile building blocks in organic chemistry, compounds called carbenes can be too hot to handle. In the lab, chemists often avoid using these highly reactive molecules due to how explosive they can be.