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Dissolution dynamic nuclear polarization efficiency enhanced by Hartmann–Hahn cross polarization


Batel, Michael; Krajewski, Marcin; Däpp, Alexander; Hunkeler, Andreas; Meier, Beat H; Kozerke, Sebastian; Ernst, Matthias (2012). Dissolution dynamic nuclear polarization efficiency enhanced by Hartmann–Hahn cross polarization. Chemical Physics Letters, 554:72-76.

Abstract

Dynamic nuclear polarization (DNP) can be used to increase the polarization of nuclei by utilizing the higher electron polarization. Typically, in dissolution DNP heteronuclei are directly polarized due to their longer relaxation times. We present the combination of DNP to protons with subsequent cross polarization to 13C followed by dissolution to solution state. The experiment was implemented using a modified dissolution DNP probe. For a [13C]urea sample doped with TEMPO the carbon polarization and its build-up rate could be increased by a factor of two using CP. With small losses, this gain could be transferred to the solution by dissolution.

Abstract

Dynamic nuclear polarization (DNP) can be used to increase the polarization of nuclei by utilizing the higher electron polarization. Typically, in dissolution DNP heteronuclei are directly polarized due to their longer relaxation times. We present the combination of DNP to protons with subsequent cross polarization to 13C followed by dissolution to solution state. The experiment was implemented using a modified dissolution DNP probe. For a [13C]urea sample doped with TEMPO the carbon polarization and its build-up rate could be increased by a factor of two using CP. With small losses, this gain could be transferred to the solution by dissolution.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Institute of Biomedical Engineering
Dewey Decimal Classification:170 Ethics
610 Medicine & health
Language:English
Date:2012
Deposited On:14 Feb 2013 09:58
Last Modified:21 Nov 2017 16:28
Publisher:Elsevier
ISSN:0009-2614
Publisher DOI:https://doi.org/10.1016/j.cplett.2012.10.018

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