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Coherent Dynamic Nuclear Polarization using Chirped Pulses

08 May 2023, Version 1
Working Paper
This content is a preprint and has not undergone peer review at the time of posting.

Abstract

This paper presents a study of coherent dynamic nuclear polarization (DNP) using frequency swept pulses at 94 GHz which optimize the polarization transfer efficiency. Accordingly, an enhancement ℇ∼496 was observed using 10mM trityl-OX063 as the polarizing agent in a standard d8-glycerol:D2O:H2O :: 6:3:1 glassing matrix at 70K. At present this is the largest DNP enhancement reported at this microwave frequency and temperature. Furthermore, the frequency swept pulses enhance the nuclear magnetic resonance (NMR) signal and reduce the recycle delay, accelerating the NMR signal acquisition.

Keywords

NMR
nuclear magnetic resonance
DNP
dynamic nuclear polarization
coherent DNP
pulsed DNP

Supplementary materials

Title
Description
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Title
Supporting Information
Description
1. DNP Transfer Ratios 2. W-band EPR 3. Study of Electron Coherence after SSE 4. Movie demonstrating the electron and nuclear polarizations during ISE
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Now Published

Coherent Dynamic Nuclear Polarization using Chirped Pulses [opens in a new tab]
Yifan Quan, Manoj V. H. Subramanya, Yifu Ouyang, Michael Mardini, Thierry Dubroca, Stephen Hill, Robert G. Griffin journal article
The Journal of Physical Chemistry Letters , Volume 14, Issue 20
Online publication date: May 15, 2023

Version History

May 08, 2023 Version 1

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The content is available under CC BY 4.0 [opens in a new tab]

DOI

10.26434/chemrxiv-2023-c8gpf
D O I: 10.26434/chemrxiv-2023-c8gpf [opens in a new tab]

Funding

National Institutes of Health
GM132997
National Institutes of Health
AG058504
Swiss National Science Foundation
P500PN_202639
US Department of Energy
DE-SC0020260
National Science Foundation Division of Materials Research
DMR-1644779
National Science Foundation Division of Materials Research
DMR-2128556

Author’s competing interest statement

The author(s) have declared they have no conflict of interest with regard to this content

Ethics

The author(s) have declared ethics committee/IRB approval is not relevant to this content

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