On the theory of the spin I = 1/2 double quantum NMR: Effects of spins spatial displacements between RF pulses-Reference-Cited by-同舟云学术

On the theory of the spin I = 1/2 double quantum NMR: Effects of spins spatial displacements between RF pulses

Published:2022-12-14 Issue:22 Volume:157 Page:224108
ISSN:0021-9606
Container-title:The Journal of Chemical Physics
language:en
Short-container-title:J. Chem. Phys.

Author:

Brekotkin I. V.¹^ORCID,Fatkullin N. F.¹²^ORCID,Lindt K.²^ORCID,Mattea C.²^ORCID,Stapf S.²^ORCID

Affiliation:

1. Institute of Physics, Kazan Federal University, Kazan, Tatarstan 420008, Russia

2. Department of Technical Physics II/Polymer Physics, TU Ilmenau, PO Box 100 565, D-98684 Ilmenau, Germany

Abstract

Spatial displacements of spins between radio frequency pulses in a Double-Quantum (DQ) nuclear magnetic resonance pulse sequence generate additional terms in the effective DQ Hamiltonian. We derive a simple expression that allows the estimation and control of these contributions to the initial rise of the DQ build up function by variation of experimental parameters in systems performing anomalous diffusion. The application of polymers is discussed.

Funder

Deutsche Forschungsgemeinschaft

Publisher

AIP Publishing

Subject

Physical and Theoretical Chemistry,General Physics and Astronomy

Link

https://aip.scitation.org/doi/pdf/10.1063/5.0124510

Reference22 articles.

1. NMR studies of clustering in solids

2. Chain-Order Effects in Polymer Melts Probed byH1Double-Quantum NMR Spectroscopy

3. Local Order and Chain Dynamics in Molten Polymer Blocks Revealed by Proton Double-Quantum NMR

4. An Investigation of Poly(dimethylsiloxane) Chain Dynamics and Order in Its Inclusion Compound withγ-Cyclodextrin by Fast-MAS Solid-State NMR Spectroscopy

5. Methyl groups as local probes for polymer dynamics as investigated by double-quantum magic-angle spinning NMR spectroscopy