Titre :

Through‐space ¹¹ B– ²⁷ Al correlation: Influence of the recoupling channel

Auteur(s) :

Zheng, Mingji [Auteur]
University of Chinese Academy of Sciences [Beijing] [UCAS]
Xin, Shaohui [Auteur]
Wang, Qiang [Auteur]
Trebosc, Julien [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Xu, Jun [Auteur]
Qi, Guodong [Auteur]
Feng, Ningdong [Auteur]
Lafon, Olivier [Auteur]
Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Deng, Feng [Auteur]

Titre de la revue :

Magnetic Resonance in Chemistry

Nom court de la revue :

Magn Reson Chem

Numéro :

59

Pagination :

1062-1076

Date de publication :

2021-09

ISSN :

0749-1581, 1097-458X

Discipline(s) HAL :

Chimie/Chimie inorganique

Résumé en anglais : [en]

Through-space heteronuclear correlation (D-HETCOR) experiments based on heteronuclear multiple-quantum correlation (D-HMQC) and refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) sequences have been ...
Lire la suite >Through-space heteronuclear correlation (D-HETCOR) experiments based on heteronuclear multiple-quantum correlation (D-HMQC) and refocused insensitive nuclei enhanced by polarization transfer (D-RINEPT) sequences have been proven to be useful approaches for the detection of the spatial proximity between half-integer quadrupolar nuclei in solids under magic-angle spinning (MAS) conditions. The corresponding pulse sequences employ coherence transfers mediated by heteronuclear dipolar interactions, which are reintroduced under MAS by radiofrequency irradiation of only one of the two correlated nuclei. We investigate herein using numerical simulations of spin dynamics and solid-state NMR experiments on magnesium aluminoborate glass how the choice of the channel to which the heteronuclear dipolar recoupling is applied affects the transfer efficiency of D-HMQC and D-RINEPT sequences between 11B and 27Al nuclei. Experimental results show that maximum transfer efficiency is achieved when the recoupling scheme is applied to the channel, for which the spin magnetization is parallel to the B0 axis in average.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Établissement(s) :

CNRS
Centrale Lille
ENSCL
Univ. Artois
Université de Lille

Collections :

• Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

RMN et matériaux inorganiques (RM2I)

Date de dépôt :

2022-03-24T09:03:00Z
2023-11-24T10:00:17Z