T-2-Filtered T-2 - T-2 Exchange NMR

Author(s)

d'Eurydice, Marcel Nogueira ^{[1, 2]} ; Montrazi, Elton Tadeu ^[1] ; Fortulan, Carlos Alberto ^[3] ; Bonagamba, Tito Jose ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13560970 Sao Paulo - Brazil

^[2] Victoria Univ Wellington, Sch Chem & Phys Sci, Wellington - New Zealand

^[3] Univ Sao Paulo, Escola Engn Sao Carlos, CP 359, BR-13560970 Sao Paulo - Brazil

• Document type: Journal article
• Source: Journal of Chemical Physics; v. 144, n. 20 MAY 28 2016.
• Web of Science Citations: 8

Abstract

This work introduces an alternative way to perform the T-2-T-2 Exchange NMR experiment. Rather than varying the number of p pulses in the first CPMG cycle of the T-2-T-2 Exchange NMR pulse sequence, as used to obtain the 2D correlation maps, it is fixed and small enough to act as a short T-2-filter. By varying the storage time, a set of 1D measurements of T-2 distributions can be obtained to reveal the effects of the migration dynamics combined with relaxation effects. This significantly reduces the required time to perform the experiment, allowing a more in-depth study of exchange dynamics and relaxation processes with improved signal-to-noise ratio. These aspects stand as basis of this novel experiment, T-2-Filtered T-2-T-2 Exchange NMR or simply T-2 F-TREx. Published by AIP Publishing. (AU)

• FAPESP's process: 09/54880-6 - Manipulation of nuclear spins by magnetic and quadrupole resonance techniques
• Grantee: Tito José Bonagamba
• Support Opportunities: Regular Research Grants