Cocrystalline Matrices for Hyperpolarization at Room Temperature Using Photoexcited Electrons.
J Am Chem Soc
; 146(21): 14539-14545, 2024 May 29.
Article
de En
| MEDLINE
| ID: mdl-38754971
ABSTRACT
We propose using cocrystals as effective polarization matrices for triplet dynamic nuclear polarization (DNP) at room temperature. The polarization source can be uniformly doped into cocrystals formed through acid-acid, amide-amide, and acid-amide synthons. The dense-packing crystal structures, facilitated by multiple hydrogen bonding and π-π interactions, result in extended T1 relaxation times, enabling efficient polarization diffusion within the crystals. Our study demonstrates the successful polarization of a DNP-magnetic resonance imaging molecular probe, such as urea, within a cocrystal matrix at room temperature using triplet-DNP.
Texte intégral:
1
Collection:
01-internacional
Base de données:
MEDLINE
Langue:
En
Journal:
J Am Chem Soc
Année:
2024
Type de document:
Article
Pays d'affiliation:
Japon
Pays de publication:
États-Unis d'Amérique