Simultaneous acquisition for T2-T2 Exchange and T1-T2 correlation NMR experiments

Elton T Montrazi; Everton Lucas-Oliveira; Arthur G Araujo-Ferreira; Mariane Barsi-Andreeta; Tito J Bonagamba

doi:10.1016/j.jmr.2018.02.008

Simultaneous acquisition for T₂-T₂ Exchange and T₁-T₂ correlation NMR experiments

J Magn Reson. 2018 Apr:289:63-71. doi: 10.1016/j.jmr.2018.02.008. Epub 2018 Feb 13.

Authors

Elton T Montrazi¹, Everton Lucas-Oliveira¹, Arthur G Araujo-Ferreira¹, Mariane Barsi-Andreeta¹, Tito J Bonagamba²

Affiliations

¹ São Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970, São Carlos, SP, Brazil.
² São Carlos Institute of Physics, University of São Paulo, PO Box 369, 13560-970, São Carlos, SP, Brazil. Electronic address: tito@ifsc.usp.br.

PMID: 29471277
DOI: 10.1016/j.jmr.2018.02.008

Abstract

The NMR measurements of longitudinal and transverse relaxation times and its multidimensional correlations provide useful information about molecular dynamics. However, these experiments are very time-consuming, and many researchers proposed faster experiments to reduce this issue. This paper presents a new way to simultaneously perform T₂-T₂ Exchange and T₁-T₂ correlation experiments by taking the advantage of the storage time and the two steps phase cycling used for running the relaxation exchange experiment. The data corresponding to each step is either summed or subtracted to produce the T₂-T₂ and T₁-T₂ data, enhancing the information obtained while maintaining the experiment duration. Comparing the results from this technique with traditional NMR experiments it was possible to validate the method.

Keywords: Exchange; correlation; Molecular diffusion; Porous media; Simultaneous acquisition.