COMPOSITION, COMPOSITION FOR DYNAMIC NUCLEAR POLARIZATION, POLARIZATION ENHANCING METHOD, HIGHLY POLARIZED SUBSTANCE, AND NMR MEASUREMENT METHOD
申请人:KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION
公开号:US20200289678A1
公开(公告)日:2020-09-17
A composition containing (1) a porous material and (2) a polarization source for dynamic nuclear polarization containing a molecule capable of being in an excited triplet state. According to the composition, a dynamic nuclear polarization system that has a long spin-lattice relaxation time and can readily introduce the polarization object thereto can be provided.
While dynamic nuclear polarization based on photoexcitedtriplet electrons (triplet-DNP) has the potential to hyperpolarize nuclear spins of target substrates in the low magnetic field at room temperature, there has been no triplet-DNP system offering structural rigidity and substrate accessibility. Here, we report the first example of triplet-DNP of nanoporous metal-organic frameworks. Accommodation