Frequency‐Swept Integrated Solid Effect

Can, Thach V.; Walish, Joseph J.; Swager, Timothy M.; Griffin, Robert G.

doi:10.1002/ange.201700032

Cited by 6 publications

(5 citation statements)

References 38 publications

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“…Stimulated by these ideas, we have performed a number of pulsed DNP experiments based on the original work by Wenekebach [66][67][68][69][70]; namely, NOVEL [71,72], ramped NOVEL [73], off-resonance NOVEL [74] and the frequency swept integrated solid effect (FS-ISE) [75]. These experiments have revealed a number of new features and a new mechanism, the stretched solid effect [76].…”

Section: Pulsed Dnp At High Magnetic Fieldsmentioning

confidence: 99%

High frequency dynamic nuclear polarization: New directions for the 21st century

Griffin

Swager

Temkin

2019

Journal of Magnetic Resonance

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Publisher's Disclaimer: This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final citable form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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Section: Pulsed Dnp At High Magnetic Fieldsmentioning

confidence: 99%

High frequency dynamic nuclear polarization: New directions for the 21st century

Griffin

Swager

Temkin

2019

Journal of Magnetic Resonance

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“…[63][64][65][66] Third, the development of coherent, pulsed microwave sources for time-domain high-field DNP could revolutionize the field in much the same way that pulsed methods revolutionized NMR spectroscopy. Pulsed DNP will improve polarization transfer efficiency and make it possible to use simple monoradical PA. 67,68 It may also be possible to eliminate deleterious paramagnetic broadening effects with electron decoupling. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 ...…”

Section: Acs Paragon Plus Environmentmentioning

confidence: 99%

Materials Characterization by Dynamic Nuclear Polarization-Enhanced Solid-State NMR Spectroscopy

Rossini

2018

J. Phys. Chem. Lett.

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High-resolution solid-state NMR spectroscopy is a powerful tool for the study of organic and inorganic materials because it can directly probe the symmetry and structure at nuclear sites, the connectivity/bonding of atoms and precisely measure inter-atomic distances. However, NMR spectroscopy is hampered by intrinsically poor sensitivity, consequently, the application of NMR spectroscopy to many solid materials is often infeasible. High-field dynamic nuclear polarization (DNP) has emerged as a technique to routinely enhance the sensitivity of solid-state NMR experiments by one to three orders of magnitude. This perspective gives a general overview of how DNP enables advanced solid-state NMR experiments on a variety of materials. DNP-enhanced solid-state NMR experiments provide unique insights into the molecular structure, which makes it possible to form structure-activity relationships that ultimately assist in the rational design and improvement of materials. Disciplines Materials Chemistry | Physical Chemistry CommentsThis document is the unedited Author's version of a Submitted Work that was subsequently accepted for publication in The Journal of Physical Chemistry Letters, copyright © American Chemical Society after peer review. To access the final edited and published work see doi: 10.1021/acs.jpclett.8b01891. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 Abstract High-resolution solid-state NMR spectroscopy is a powerful tool for the study of organic and

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“…In the samples, the photoexcited triplet electron spins in pentacene are polarized to 23% with the quantum process (Figure A). During the lifetime of the photoexcited triplet state, that is, ∼100 μs, we coherently transfer the polarization to 1 H spins with DNP using a pulsed microwave via the so-called integrated solid effect (ISE). − ,, By repeating the sequence of photoexcitation and pulsed DNP at 20 ms intervals (Figure B), we increased the 1 H spin polarization of the whole sample until the buildup and the 1 H spin–lattice relaxation reached equilibrium. We used a dye laser with a wavelength of 590 nm as a light source.…”

Section: Resultsmentioning

confidence: 99%

Dissolution Dynamic Nuclear Polarization at Room Temperature Using Photoexcited Triplet Electrons

et al. 2018

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Dissolution dynamic nuclear polarization (DNP) has recently gained attention as a method to enhance the sensitivity of liquid NMR spectroscopy and MRI. We demonstrate dissolution of the sample hyperpolarized by DNP using photoexcited triplet electrons in 0.38 T at room temperature. The achieved polarization of 0.8% is 6100 times as high as that at thermal equilibrium under the condition. The result is an important step for DNP using photoexcited triplet electrons to become widely used in chemical and biomedical research.

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Frequency‐Swept Integrated Solid Effect

Cited by 6 publications

References 38 publications

High frequency dynamic nuclear polarization: New directions for the 21st century

High frequency dynamic nuclear polarization: New directions for the 21st century

Materials Characterization by Dynamic Nuclear Polarization-Enhanced Solid-State NMR Spectroscopy

Dissolution Dynamic Nuclear Polarization at Room Temperature Using Photoexcited Triplet Electrons

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