PFAS analysis: Reliably detecting eternity chemicals

analytica conference: PFAS in the focus of science

27-Feb-2024 - Perfluorinated and polyfluorinated alkyl substances (PFAS) are colloquially known as “eternity chemicals” due to their persistence in the environment. PFAS do not occur naturally, but they can be found in all sorts of things from food packaging and outdoor textiles to seals and hoses. This group ...

A miniature magnetic resonance imager made of diamond

Quantum sensors make microscale NMR spectroscopy possible

23-Oct-2023 - The development of tumors begins with miniscule changes within the body's cells; ion diffusion at the smallest scales is decisive in the performance of batteries. Until now the resolution of conventional imaging methods has not been high enough to represent these processes in detail. A research ...

New spectroscopic insights into hydrogen bonds

Surprising results

21-Jun-2022 - Hydrogen bonds are of fundamental interest in materials science, physics and chemistry. An international team including scientists from the University of Bayreuth has now achieved surprising insights into the formation of hydrogen bonds using a novel method that enables the application of NMR ...

Highly Accurate Results at Low Computational Cost

Researchers Succeed in Predicting NMR Parameters with DLPNO Approximation

20-May-2021 - Nuclear magnetic resonance (NMR) is one of the most important analytical techniques used in chemical, pharmaceutical, and biomedical research as well as in materials sciences. It provides detailed information about the structures of molecules in solution, which is, however, indirect. Hence, ...

Analysing molecular structures in more detail

New NMR methods for investigating paramagnetic complexes and supramolecular cages developed

21-Sep-2020 - Chemistry and structural biology use the standard methods of NMR spectroscopy (NMR = nuclear magnetic resonance) to examine the structure of molecules including large molecules like proteins in solution. The NMR active nuclei, such as hydrogen atoms, are excited using radiofrequency pulses in ...

New NMR method enables monitoring of chemical reactions in metal containers

Analysis of heterogeneous samples in metal containers using zero- to ultralow-field NMR spectroscopy

20-Jul-2020 - Nuclear magnetic resonance (NMR) is employed in a wide range of applications. In chemistry, nuclear magnetic resonance spectroscopy is in standard use for the purposes of analysis, while in the medical field, magnetic resonance imaging (MRI) is used to see structures and metabolism in the body. ...

Determining the atomic structure of natural products more rapidly and accurately

23-Jan-2020 - Many drugs are derived from natural products. But before natural products can be exploited, chemists must first determine their structure and stereochemistry. This can be a major challenge, particularly when the molecules cannot be crystallized and contain only few hydrogen atoms. A new NMR-based ...

Dynamic images show rhomboid protease in action

01-Nov-2019 - Rhomboid proteases are clinically relevant membrane proteins that play a key role in various diseases. Using solid-state NMR spectroscopy, researchers from Berlin’s Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) have now been able to watch rhomboid proteases in a native lipid ...

How Noroviruses control their desire for sweets

25-Mar-2019 - Researchers from the Institute of Chemistry and Metabolomics of the University of Lübeck discover a new mechanism allowing Noroviruses to switch off sugar binding. Key for these novel insights were NMR (Nuclear Magnetic Resonance) experiments. Development of vaccines as well as the search for ...

Researchers Part Water

‘Electric Prism’ Separates Water’s Nuclear Spin States

10-Sep-2014 - Using an "electric prism", scientists have found a new way of separating water molecules that differ only in their nuclear spin states and, under normal conditions, do not part ways. Since water is such a fundamental molecule in the universe, the recent study may impact a multitude of research ...