Turkish Journal of Physics
Abstract
Polarization transfer between three $1/2$ nuclear spins in a specially prepared isotopically enriched molecule diethylphthalimide malonate-2-$^{13}$C,$^{15}$N molecule was obtained using the nuclear magnetic resonance (NMR) method. The polarization transfer was performed by implementing a sequence of radio frequency pulses and waiting intervals. Relaxation times and NMR spectrum for the studied nuclei were measured in samples of molecules with natural and enriched isotopes $^{13}$C and $^{15}$N. Measurements of the proton relaxation rate for diethylphthalimidomalonate and diethylpthalimidomalonate-2-$^{13}$C,$^{15}$N showed an increase in relaxation rate by a factor of 4 for protons bound to $^{13}$C,$^{15}$N nuclei. The use of the quantum polarization transfer method made it possible to reduce the measurement time of the relaxation rate of spin polarization $^{15}$N by about 500 times. In addition, the possibility of implementing three-qubit quantum gates using this molecule was shown.
Author ORCID Identifier
DIM SAFIN: 0009-0009-2178-5533
ALEXANDER PEREPUKHOV: 0000-0001-8623-4147
SERGEI RZHEVSKIY: 0000-0003-4732-9949
YURI BELOUSOV: 0000-0002-9940-0869
DOI
10.55730/1300-0101.2794
Keywords
Nuclear magnetic resonance, relaxation, polarization transfer, signal enhancement
First Page
294
Last Page
307
Publisher
The Scientific and Technological Research Council of Türkiye (TÜBİTAK)
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
SAFIN, D, PEREPUKHOV, A, RZHEVSKIY, S, & BELOUSOV, Y (2025). Application of polarization transfer algorithm in organic molecules with three nonequivalent coupled spins. Turkish Journal of Physics 49 (6): 294-307. https://doi.org/10.55730/1300-0101.2794
