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Astonishing diversity: Semiconductor nanoparticles form numerous structures

X-ray study reveals how lead sulphide particles self-organise in real time

13-Aug-2021

The structure adopted by lead sulphide nanoparticles changes surprisingly often as they assemble to form ordered superlattices. This is revealed by an experimental study that has been conducted at DESY’s X-ray source PETRA III. A team led by the DESY scientists Irina Lokteva and Felix Lehmkühler, ...

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New technology will allow important metals to be made more efficiently

Patented technology will improve production of many electronic and computer components

11-Aug-2021

University of Minnesota Twin Cities College of Science and Engineering researchers have invented a cheaper, safer, and simpler technology that will allow a “stubborn” group of metals and metal oxides to be made into thin films used in many electronics, computer components, and other ...

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Infrared in the heel

A chromium complex as NIR-II emitter

29-Jul-2021

Substances that emit light in the near infrared (NIR) range are needed for a wide variety of applications, from fibre-optic telecommunications to imaging techniques for biomedicine. A Swiss research team has now for the first time developed a chromium complex that emits light in the coveted ...

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Infrared Held in a Pincer

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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Chemistry discovery could remove micropollutants from environment

Researchers made an unexpected breakthrough discovery

20-Jul-2021

Using a pioneering imaging technique, Cornell University researchers obtained a high-resolution snapshot of how ligands, molecules that bind to other molecules or metals, interact with the surface of nanoparticles. In doing so, they made an unexpected breakthrough discovery. They determined that ...

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How to teach gold to tell left from right

Chemist from the TU Wien was awarded an Elise-Richter scholarship: She is conducting research in catalysis with ultra-small gold clusters

17-Jul-2020

Nanometer-sized gold particles consisting of only a few atoms can be used as catalysts for important chemical reactions. Noelia Barrabés from the Institute of Materials Chemistry at TU Wien has been researching new methods of adapting and precisely controlling such tiny gold clusters for years. ...

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A novel strategy to generate useful chiral compounds

Newly designed ligands for a catalytic reaction to synthesize drugs and useful compounds

01-Jul-2020

Currently, various therapeutic compounds in the market, such as proteins, enzymes, and amino acids, are "chiral compounds"--molecules with two structures that are "mirror" images of each other but cannot be superimposed. Although the two variants of the molecule, also called "enantiomers," are ...

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Manipulating ligands

A new dimension for promoting electrocatalysis performance by noble metal aerogels

27-Mar-2020

Noble metal aerogels (NMAs) are an emerging class of porous materials embracing nano-sized highly-active noble metals and porous structures, displaying unprecedented performance in diverse electrocatalytic processes. However, various impurities, particularly organic ligands, are often involved in ...

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Partitioning of Porous Materials

Highly resorptive MOFs can be constructed by a foresighted combination of two different synthetic principles

02-May-2019

Gases and pollutants can be filtered from air and liquids by means of porous, crystalline materials, such as metal–organic frameworks (MOFs). To further partition these pores and enhance their sorption capacity, a team of scientists have developed a fast and versatile two-in-one synthetic ...

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Golden Ball in a Golden Cage

"Golden fullerene": ligand-protected nanocluster made of 32 gold atoms

25-Mar-2019

Researchers have synthesized a tiny structure from 32 gold atoms. This nanocluster has a core of 12 gold atoms surrounded by a shell of 20 additional gold atoms. As the scientists report in the journal Angewandte Chemie, the unusual stability of this cluster results from electronic interactions ...

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