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Ran Wei

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Publications associées (4)

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Systematic Evaluation of Polarizing Agents for Dynamic Nuclear Polarization Enhanced NMR

David Lyndon Emsley, Yu Rao, Ran Wei, Yuxuan Zhang

Dynamic nuclear polarization (DNP) can significantly enhance the sensitivity of NMR spectroscopy, via the transfer of polarization from unpaired electrons to nuclei. As a result, there is considerable interest in improving DNP efficiency, particularly thro ...

Wiley2025

Rational Design of Dinitroxide Polarizing Agents for Dynamic Nuclear Polarization to Enhance Overall NMR Sensitivity

David Lyndon Emsley, Yu Rao, Amrit Venkatesh, Ran Wei

We evaluate the overall sensitivity gains provided by a series of eighteen nitroxide biradicals for dynamic nuclear polarization (DNP) solid-state NMR at 9.4 T and 100 K, including eight new biradicals. We find that in the best performing group the factors ...

Wiley-VCH Verlag GmbH2024

Solid Effect Dynamic Nuclear Polarization Enhancement of >500 at 9.4 T

David Lyndon Emsley, Yu Rao, Amrit Venkatesh, Ran Wei

Efficient polarizing agents for dynamic nuclear polarization (DNP) enhanced magic angle spinning (MAS) NMR spectroscopy is of high current interest due the potential to significantly boost NMR sensitivity. While most efforts have centered on cross-effect ( ...

American Chemical Society (ACS)2024

Probing Homogeneous Catalysts and Precatalysts in Solution by Exchange-Mediated Overhauser Dynamic Nuclear Polarization NMR

David Lyndon Emsley, Yu Rao, Federico De Biasi, Ran Wei

Published by American Chemical Society.Triphenylphosphine (PPh3) is a ubiquitous ligand in organometallic chemistry that has been shown to give enhanced 31P NMR signals at high magnetic field via a scalar-dominated Overhauser effect dynamic nuclear polariz ...

2024