A NIR-II-emitting chromium complex

23-Jul-2021

Many applications, from fiber-optic telecommunications to biomedical imaging processes require substances that emit light in the near-infrared range (NIR). A research team in Switzerland has now developed the first chromium complex that emits light in the coveted, longer wavelength NIR-II range. ...

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Economical synthesis of polyacrylates and polymethacrylates from biobased materials

22-Jul-2021

Despite the best efforts of industry to work towards sustainability, most plastics (or polymers) are still made using non-renewable fossil fuels. However, researchers have now found an economical method for producing biobased acrylate resins. The study, published in the journal Angewandte Chemie, ...

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Amidation of light alkanes

21-Jul-2021

The carbon–hydrogen bonds in alkanes—particularly those at the ends of the molecules, where each carbon has three hydrogen atoms bound to it—are very hard to “crack” if you want to replace the hydrogen atoms with other atoms. Methane (CH4) and ethane (CH3CH3) are made up, exclusively, of such ...

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How to obtain a palladium catalyst for the selective hydrogenation of acrolein

24-Jun-2021

Chemical reactions don’t always go to plan. Unwanted by-products lead to extra costs and waste resources. Selective catalysts can help, but chemists have to test out large numbers before they find the right fit. Researchers have now investigated, on an atomic level, how to obtain a palladium ...

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Discovering new leads for functional materials guided by artificial intelligence

22-Jun-2021

Searching for lead materials with specific properties, researchers have developed a workflow that incorporates artificial intelligence to guide discovery of a new ceramic structure with particularly low thermal conductivity. As they explain in the journal Angewandte Chemie, the material has an ...

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Catalytic high-temperature oxidations: Individual atom or metal cluster?

15-Jun-2021

Highly dispersed platinum catalysts provide new possibilities for industrial processes, such as the flameless combustion of methane, propane, or carbon monoxide, which has fewer emissions and is more resource efficient and consistent than conventional combustion. In the journal Angewandte Chemie, ...

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Stabilization of the borafluorene anion with carbenes

07-May-2021

The incorporation of boron into polycyclic aromatic hydrocarbon systems leads to interesting chromophoric and fluorescing materials for optoelectronics, including organic light-emitting diodes (OLEDS) and field-effect transistors, as well as polymer-based sensors. In the journal Angewandte ...

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An economical alloy-based aerogel as electrocatalyst for carbon fixation

03-May-2021

Many industrial processes emit carbon dioxide into the atmosphere. Unfortunately, however, current electrochemical separation methods are expensive and consume large amounts of power. They also require expensive and rare metals as catalysts. A study in the journal Angewandte Chemie describes a ...

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Enantioselective synthesis of indole derivatives

12-Apr-2021

Indole, and structures derived from it, are a component of many natural substances, such as the amino acid tryptophan. A new catalytic reaction produces cyclopenta[b]indoles—frameworks made of three rings that are joined at the edges—very selectively and with the desired spatial structure. As a ...

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Options for chemical plastic recycling

25-Jan-2021

Degradable, bio-based polymers offer options for chemical recycling, and they can be a tool to store and release useful molecules. Scientists have developed a class of sugar-based polymers that are degradable through acid hydrolysis. The researchers also integrated “cargo” molecules in the ...

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