Microwave-gated dynamic nuclear polarization

Aurélien Bornet; Arthur Pinon; Aditya Jhajharia; Mathieu Baudin; Xiao Ji; Lyndon Emsley; Geoffrey Bodenhausen; Jan Henrik Ardenkjær-Larsen; Sami Jannin

doi:10.1039/c6cp05587g

Microwave-gated dynamic nuclear polarization

Aurélien Bornet, Arthur Pinon, Aditya Jhajharia, Mathieu Baudin, Xiao Ji, Lyndon Emsley, Geoffrey Bodenhausen, Jan Henrik Ardenkjær-Larsen, Sami Jannin

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Abstract

Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P((13)C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, (13)C polarizations on sodium [1-(13)C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P((13)C) = 78% could even be reached for [(13)C]urea.

Original language	English
Journal	Physical Chemistry Chemical Physics
Volume	18
Pages (from-to)	30530-30535
Number of pages	6
ISSN	1463-9076
DOIs	https://doi.org/10.1039/c6cp05587g
Publication status	Published - 2016

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title = "Microwave-gated dynamic nuclear polarization",

abstract = "Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P((13)C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, (13)C polarizations on sodium [1-(13)C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P((13)C) = 78% could even be reached for [(13)C]urea.",

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T1 - Microwave-gated dynamic nuclear polarization

AU - Bornet, Aurélien

AU - Pinon, Arthur

AU - Jhajharia, Aditya

AU - Baudin, Mathieu

AU - Ji, Xiao

AU - Emsley, Lyndon

AU - Bodenhausen, Geoffrey

AU - Ardenkjær-Larsen, Jan Henrik

AU - Jannin, Sami

PY - 2016

Y1 - 2016

N2 - Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P((13)C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, (13)C polarizations on sodium [1-(13)C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P((13)C) = 78% could even be reached for [(13)C]urea.

AB - Dissolution dynamic nuclear polarization (D-DNP) has become a method of choice to enhance signals in nuclear magnetic resonance (NMR). Recently, we have proposed to combine cross-polarization (CP) with D-DNP to provide high polarization P((13)C) in short build-up times. In this paper, we show that switching microwave irradiation off for a few hundreds of milliseconds prior to CP can significantly boost the efficiency. By implementing microwave gating, (13)C polarizations on sodium [1-(13)C]acetate as high as 64% could be achieved with a polarization build-up time constant as short as 160 s. A polarization of P((13)C) = 78% could even be reached for [(13)C]urea.

U2 - 10.1039/c6cp05587g

DO - 10.1039/c6cp05587g

M3 - Journal article

C2 - 27782260

SN - 1463-9076

VL - 18

SP - 30530

EP - 30535

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

ER -

Microwave-gated dynamic nuclear polarization

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