Heteronuclear decoupling in MAS NMR in the intermediate to fast sample spinning regime

Asif Equbal; Morten Bjerring; Kshama Sharma; P. K. Madhu; Niels Christian Nielsen

doi:10.1016/j.cplett.2015.12.014

Heteronuclear decoupling in MAS NMR in the intermediate to fast sample spinning regime

Asif Equbal, Morten Bjerring, Kshama Sharma, P. K. Madhu^*, Niels Christian Nielsen

^*Corresponding author for this work

Interdisciplinary Nanoscience Center - INANO-Kemi, iNANO-huset

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Journal article › Research › peer-review

8 Citations (Scopus)

Abstract

Heteronuclear spin decoupling in solid-state magic-angle spinning NMR is investigated to present methods overcoming interferences between rf irradiation and sample spinning in the intermediate to fast spinning regime. We demonstrate that a recent phase-alternated variant of refocused CW irradiation (rCW ^ApA) provides efficient and robust decoupling in this regime. An extensive experimental and numerical comparison is presented for rCW ^ApA and PISSARRO (phase-inverted supercycled sequence for attenuation of rotary resonance), previously introduced to quench rotary-resonance recoupling effects, under conditions with spinning frequencies between 30 and 60 kHz. Simulations are used to identify the effect of decoupling for various nuclear spin interactions.

Original language	English
Journal	Chemical Physics Letters
Volume	644
Pages (from-to)	243-249
Number of pages	7
ISSN	0009-2614
DOIs	https://doi.org/10.1016/j.cplett.2015.12.014
Publication status	Published - 16 Jan 2016

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10.1016/j.cplett.2015.12.014

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title = "Heteronuclear decoupling in MAS NMR in the intermediate to fast sample spinning regime",

abstract = "Heteronuclear spin decoupling in solid-state magic-angle spinning NMR is investigated to present methods overcoming interferences between rf irradiation and sample spinning in the intermediate to fast spinning regime. We demonstrate that a recent phase-alternated variant of refocused CW irradiation (rCW ApA) provides efficient and robust decoupling in this regime. An extensive experimental and numerical comparison is presented for rCW ApA and PISSARRO (phase-inverted supercycled sequence for attenuation of rotary resonance), previously introduced to quench rotary-resonance recoupling effects, under conditions with spinning frequencies between 30 and 60 kHz. Simulations are used to identify the effect of decoupling for various nuclear spin interactions.",

author = "Asif Equbal and Morten Bjerring and Kshama Sharma and Madhu, {P. K.} and Nielsen, {Niels Christian}",

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T1 - Heteronuclear decoupling in MAS NMR in the intermediate to fast sample spinning regime

AU - Equbal, Asif

AU - Bjerring, Morten

AU - Sharma, Kshama

AU - Madhu, P. K.

AU - Nielsen, Niels Christian

PY - 2016/1/16

Y1 - 2016/1/16

N2 - Heteronuclear spin decoupling in solid-state magic-angle spinning NMR is investigated to present methods overcoming interferences between rf irradiation and sample spinning in the intermediate to fast spinning regime. We demonstrate that a recent phase-alternated variant of refocused CW irradiation (rCW ApA) provides efficient and robust decoupling in this regime. An extensive experimental and numerical comparison is presented for rCW ApA and PISSARRO (phase-inverted supercycled sequence for attenuation of rotary resonance), previously introduced to quench rotary-resonance recoupling effects, under conditions with spinning frequencies between 30 and 60 kHz. Simulations are used to identify the effect of decoupling for various nuclear spin interactions.

AB - Heteronuclear spin decoupling in solid-state magic-angle spinning NMR is investigated to present methods overcoming interferences between rf irradiation and sample spinning in the intermediate to fast spinning regime. We demonstrate that a recent phase-alternated variant of refocused CW irradiation (rCW ApA) provides efficient and robust decoupling in this regime. An extensive experimental and numerical comparison is presented for rCW ApA and PISSARRO (phase-inverted supercycled sequence for attenuation of rotary resonance), previously introduced to quench rotary-resonance recoupling effects, under conditions with spinning frequencies between 30 and 60 kHz. Simulations are used to identify the effect of decoupling for various nuclear spin interactions.

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DO - 10.1016/j.cplett.2015.12.014

M3 - Journal article

SN - 0009-2614

VL - 644

SP - 243

EP - 249

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Heteronuclear decoupling in MAS NMR in the intermediate to fast sample spinning regime

Abstract

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