ArticlePhysical chemistry chemical physics : PCCP2024
Relaxation enhancement by microwave irradiation may limit dynamic nuclear polarization.
Article in Physical chemistry chemical physics : PCCP, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Comparing low-field cryogenic nuclear relaxation of hyperpolarized diamond and silicon particles.Scientific reports · 2025Article
- Temperature-Dependent Dynamic Nuclear Polarization of Diamond.The journal of physical chemistry. C, Nanomaterials and interfaces · 2025Article
- Two-electron two-nucleus effective Hamiltonian and the spin diffusion barrier.Science advances · 2025Article
- Hypershifted spin spectroscopy with dynamic nuclear polarization at 1.4 K.Science advances · 2024Article
- Controlled synthesis and characterization of porous silicon nanoparticles for dynamic nuclear polarization.Nanoscale · 2024Article
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Authors and funding
4 authors.
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Abstract
Dynamic nuclear polarization enables the hyperpolarization of nuclear spins beyond the thermal-equilibrium Boltzmann distribution. However, it is often unclear why the experimentally measured hyperpolarization is below the theoretically achievable maximum polarization. We report a (near-) resonant relaxation enhancement by microwave (MW) irradiation, leading to a significant increase in the nuclear polarization decay compared to measurements without MW irradiation. For example, the increased nuclear relaxation limits the achievable polarization levels to around 35% instead of hypothetical 60%, measured in the DNP material TEMPO in
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