Light-Induced 1H NMR Hyperpolarization in Solids at 9.4 and 21.1 T

F De Biasi, G Karthikeyan, M Visegrádi… - Journal of the …, 2024 - ACS Publications
The inherently low sensitivity of nuclear magnetic resonance (NMR) spectroscopy is the
major limiting factor for its application to elucidate structure and dynamics in solids. In the …

Large cross-effect dynamic nuclear polarisation enhancements with kilowatt inverting chirped pulses at 94 GHz

Y Zhao, H El Mkami, RI Hunter, G Casano… - Communications …, 2023 - nature.com
Dynamic nuclear polarisation (DNP) is a process that transfers electron spin polarisation to
nuclei by applying resonant microwave radiation, and has been widely used to improve the …

Optically Enhanced Solid-State 1H NMR Spectroscopy

F De Biasi, MA Hope, CE Avalos… - Journal of the …, 2023 - ACS Publications
Low sensitivity is the primary limitation to extending nuclear magnetic resonance (NMR)
techniques to more advanced chemical and structural studies. Photochemically induced …

Photoinduced Magnetic Exchange-Jump Promotes Ground State Biradical Electron Spin Polarization

ML Kirk, DA Shultz, AR Marri… - Journal of the American …, 2024 - ACS Publications
Photoinduced electron spin polarization (ESP) is reported in the electronic ground states of
three Pt (II) complexes comprised of two S= 1/2 nitronyl nitroxide (NN) radicals attached …

Dynamic Electron Polarization Lasting More Than 10 μs by Hybridizing Porphyrin and TEMPO with Flexible Linkers

K Nishimura, R Yabuki, T Hamachi… - The Journal of …, 2023 - ACS Publications
Dynamic electron polarization (DEP), induced by quenching of photoexcited species by
stable radicals, can hyperpolarize electron spins in solution at room temperature. Recently …

A unified description for polarization-transfer mechanisms in magnetic resonance in static solids: Cross polarization and DNP

Z Pang, S Jain, C Yang, X Kong, KO Tan - The Journal of Chemical …, 2022 - pubs.aip.org
Polarization transfers are crucial building blocks in magnetic resonance experiments, ie,
they can be used to polarize insensitive nuclei and correlate nuclear spins in …

Theoretical investigation of multi-spin excited states of anthracene radical-linked π-conjugated spin systems by computational chemistry

K Kato, Y Teki - Physical Chemistry Chemical Physics, 2024 - pubs.rsc.org
Multi-spin excited states of chromophore radical-linked π-conjugated spin systems are
investigated by molecular orbital calculations based on density functional theory (DFT). The …

General theory of light propagation and triplet generation for studies of spin dynamics and triplet dynamic nuclear polarisation

Y Quan, N Niketic, JM Steiner, TR Eichhorn… - Molecular …, 2023 - Taylor & Francis
A general theory is presented describing the photo-excitation dynamics of transient,
paramagnetic triplet states of aromatic molecules including their absorption properties in a …

Advances in NMR spectroscopy of small molecules in solution

P Nolis - 2023 - books.rsc.org
This book chapter covers relevant articles published in peer-reviewed journals in 2022 in
the field of NMR spectroscopy of small molecules in solution. Articles that appeared in 2022 …

Exploring the origin of electron spin polarization in the metal-containing chromophore-radical system via multireference calculations

R Sowa, Y Kurashige - 2024 - chemrxiv.org
The electron spin polarization (ESP) phenomenon in photoexcited chromophore-radical
connected systems was analyzed by multi-reference electronic structure calculations. We …