%0 Journal Article
%A Kiryutin, Alexey
S.
%A Pravdivtsev, Andrey N.
%A Yurkovskaya, Alexandra V.
%A Vieth, Hans-Martin
%A Ivanov, Konstantin L.
%D 2016
%T Nuclear Spin Singlet Order Selection by Adiabatically
Ramped RF Fields
%U https://acs.figshare.com/articles/journal_contribution/Nuclear_Spin_Singlet_Order_Selection_by_Adiabatically_Ramped_RF_Fields/4225661
%R 10.1021/acs.jpcb.6b08879.s001
%2 https://ndownloader.figshare.com/files/6893210
%K Adiabatically Ramped RF Fields
%K singlet order selection
%K Nuclear Spin Singlet Order Selection
%K T 2
%K T 1
%K proton NMR measurements
%K H 2 O
%K NMR spectrum
%K SOS
%K relaxation times
%K relaxation studies
%K method works
%K NMR method
%K singlet order
%K background signals
%K pulse sequences
%K NMR pulse sequences
%X We
describe an NMR method to generate singlet order in spin pairs
from longitudinal spin magnetization and suppress residual background
signals. This method can also be used for generating and observing
long-lived spin states. A singlet order selection (SOS) filter is
proposed, which allows us to find signals of the spin pair of interest
buried in a crowded NMR spectrum. Likewise, SOS filtering enables
proton NMR measurements in H2O without pulse sequences
for solvent suppression. We demonstrate that the method works perfectly
for both weakly and strongly coupled spin pairs. Furthermore, it can
be combined with standard NMR pulse sequences: in this way, T1- and T2-relaxation
times for spin pairs of interest can be measured. The power of the
SOS-filter is demonstrated by relaxation studies in biomolecules.
%I ACS Publications