Recent developments in materials and applications of triplet dynamic nuclear polarization

被引:3
|
作者
Hamachi, Tomoyuki [1 ]
Yanai, Nobuhiro [1 ,2 ]
机构
[1] Grad Sch Engn, Dept Appl Chem, 744 Moto Oka,Nishi Ku, Fukuoka 8190395, Japan
[2] CREST, JST, Honcho 4-1-8, Kawaguchi, Saitama 3320012, Japan
关键词
Photoexcited triplet state; Dynamic Nuclear Polarization (DNP); Triplet-DNP; Dissolution triplet-DNP; Electron Spin Resonance (ESR); PHOTO-EXCITED TRIPLET; PROTON POLARIZATION; HYPERPOLARIZED WATER; ELECTRON SPINS; STATE; PENTACENE; CHEMISTRY;
D O I
10.1016/j.pnmrs.2024.05.001
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Dynamic nuclear polarization (DNP) is a method for achieving high levels of nuclear spin polarization by transferring spin polarization from electrons to nuclei by microwave irradiation, resulting in higher sensitivity in NMR/MRI. In particular, DNP using photoexcited triplet electron spins (triplet-DNP) can provide a hyperpolarized nuclear spin state at room temperature and in low magnetic field. In this review article, we highlight recent developments in materials and instrumentation for the application of triplet-DNP. First, a brief history and principles of triplet-DNP will be presented. Next, important advances in recent years will be outlined: new materials to hyperpolarize water and biomolecules; high -sensitivity solution NMR by dissolution triplet-DNP; and strategies for further improvement of the polarization. In view of these developments, future directions to widen the range of applications of triplet-DNP will be discussed.
引用
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页码:55 / 68
页数:14
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