Simultaneous homonuclear and heteronuclear spin decoupling in magic-angle spinning solid-state NMR

Kaustubh R Mote; Perunthiruthy K Madhu

doi:10.1016/j.ssnmr.2018.01.001

Simultaneous homonuclear and heteronuclear spin decoupling in magic-angle spinning solid-state NMR

Solid State Nucl Magn Reson. 2018 Apr-May:90:7-12. doi: 10.1016/j.ssnmr.2018.01.001. Epub 2018 Jan 20.

Authors

Kaustubh R Mote¹, Perunthiruthy K Madhu²

Affiliations

¹ Tata Institute of Fundamental Research Hyderabad, Survey No. 36/P, Gopanapally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, 500 107, India. Electronic address: kaustuberm@tifrh.res.in.
² Tata Institute of Fundamental Research Hyderabad, Survey No. 36/P, Gopanapally Village, Serilingampally Mandal, Ranga Reddy District, Hyderabad, 500 107, India; Department of Chemical Sciences, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai, 400 005, India. Electronic address: madhu@tifr.res.in.

PMID: 29370958
DOI: 10.1016/j.ssnmr.2018.01.001

Abstract

We show here an effective way of implementing simultaneously homonuclear and heteronuclear dipolar decoupling in magic-angle spinning (MAS) solid-state NMR. Whilst the homonuclear spin decoupling is applied on the ¹H channel, heteronuclear spin decoupling is applied on the ¹³C channel. The ¹H spins are observed in a windowed fashion in this case. The resultant ¹H spectrum has higher resolution due to the attenuation of broadening arising from both homonuclear ¹H-¹H and heteronuclear ¹H-¹³C interactions, with the latter normally leading to additional line broadening in ¹³C labelled samples. The experiments are performed at MAS frequencies of ca. 60 kHz.

Keywords: Heteronuclear dipolar decoupling; Homonuclear dipolar decoupling; Magic-angle spinning; Solid-state NMR; rCW; wPMLG.

Publication types

Research Support, Non-U.S. Gov't