Akademik Veri Yönetim Sistemi
Iğdır Üniversitesi Fen Bilimleri Enstitüsü Dergisi, cilt.11, sa.4, ss.2729-2736, 2021 (Hakemli Dergi)
Solution state Overhauser-effect-type dynamic nuclear polarization (ODNP) has been
studied in the last years. The basis of ODNP is a polarization mechanism that presents nuclei with
electron spin polarization. ODNP enhancements studies are presented 4-fluorobenzyl alcohol (4FBA)
with the stable nitroxide radical as the polarizing agent for 15, 30 and 60 mM concentrations at 1.53
mT. Major ODNP parameters were obtained. The significant parameter is the coupling parameter,
since it determines the maximum NMR signal enhancements and the interactions between the nuclear
spin and the electron spin. The coupling parameter can vary from -0.152 to 0.001. The obtained
ODNP parameters show that both scalar and dipolar interactions occur. The results show that nitroxide
radical can be taken as polarizing agent for ODNP studies of 4-fluorobenzyl alcohol solvent. The
effect of dissolved molecular oxygen on the enhancement factor for the sample with the smallest
concentration was experimentally investigated.