ArticleJournal of the American Chemical Society2014
Dynamic nuclear polarization of (1)H, (13)C, and (59)Co in a tris(ethylenediamine)cobalt(III) crystalline lattice doped with Cr(III).
Article in Journal of the American Chemical Society, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.
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Who cites it
15 citing papers in PubMed.
- Amplified electron-spin thermal sensitivity in Mn(II) complexes.Dalton transactions (Cambridge, England : 2003) · 2026Article
- Endogenous metal-ion dynamic nuclear polarization for NMR signal enhancement in metal organic frameworks.Chemical science · 2023Article
- Dynamic Nuclear Polarization of Inorganic Halide Perovskites.The journal of physical chemistry. C, Nanomaterials and interfaces · 2023Article
- Polarizing agents for efficient high field DNP solid-state NMR spectroscopy under magic-angle spinning: from design principles to formulation strategies.Chemical science · 2023Review
- Toward exact predictions of spin-phonon relaxation times: An ab initio implementation of open quantum systems theory.Science advances · 2022Article
- Numerical recipes for faster MAS-DNP simulations.Journal of magnetic resonance (San Diego, Calif. : 1997) · 2021Article
- Structure and Functionality of an Alkylated LiJournal of the American Chemical Society · 2021Article
- Site-specific dynamic nuclear polarization in a Gd(III)-labeled protein.Physical chemistry chemical physics : PCCP · 2020Article
- Endogenous Dynamic Nuclear Polarization for Sensitivity Enhancement in Solid-State NMR of Electrode Materials.The journal of physical chemistry. C, Nanomaterials and interfaces · 2020Article
- Use of paramagnetic systems to speed-up NMR data acquisition and for structural and dynamic studies.Solid state nuclear magnetic resonance · 2019Review
- Influence of ligand encapsulation on cobalt-59 chemical-shift thermometry.Chemical science · 2019Article
- (17)O NMR Investigation of Water Structure and Dynamics.The journal of physical chemistry. B · 2016Article
- Dynamic Nuclear Polarization as an Enabling Technology for Solid State Nuclear Magnetic Resonance Spectroscopy.Analytical chemistry · 2016Article
- Biosilica-Entrapped Enzymes Studied by Using Dynamic Nuclear-Polarization-Enhanced High-Field NMR Spectroscopy.Chemphyschem : a European journal of chemical physics and physical chemistry · 2015Article
- Facing and Overcoming Sensitivity Challenges in Biomolecular NMR Spectroscopy.Angewandte Chemie (International ed. in English) · 2015Review
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7 authors.
Funding
Abstract
The study of inorganic crystalline materials by solid-state NMR spectroscopy is often complicated by the low sensitivity of heavy nuclei. However, these materials often contain or can be prepared with paramagnetic dopants without significantly affecting the structure of the crystalline host. Dynamic nuclear polarization (DNP) is generally capable of enhancing NMR signals by transferring the magnetization of unpaired electrons to the nuclei. Therefore, the NMR sensitivity in these paramagnetically doped crystals might be increased by DNP. In this paper we demonstrate the possibility of efficient DNP transfer in polycrystalline samples of [Co(en)3Cl3]2·NaCl·6H2O (en = ethylenediamine, C2H8N2) doped with Cr(III) in varying concentrations between 0.1 and 3 mol %. We demonstrate that (1)H, (13)C, and (59)Co can be polarized by irradiation of Cr(III) with 140 GHz microwaves at a magnetic field of 5 T. We further explain our findings on the basis of electron paramagnetic resonance spectroscopy of the Cr(III) site and analysis of its temperature-dependent zero-field splitting, as well as the dependence of the DNP enhancement factor on the external magnetic field and microwave power. This first demonstration of DNP transfer from one paramagnetic metal ion to its diamagnetic host metal ion will pave the way for future applications of DNP in paramagnetically doped materials or metalloproteins.
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