Kagawa Akinori, Negoro Makoto, Takeda Kazuyuki, Kitagawa Masahiro
Graduate School of Engineering Science, Osaka University, 560-8531 Toyonaka, Japan.
Rev Sci Instrum. 2009 Apr;80(4):044705. doi: 10.1063/1.3123346.
To advance static solid-state NMR with hyperpolarized nuclear spins, a system has been developed enabling dynamic nuclear polarization (DNP) using electron spins in the photoexcited triplet state with X-band microwave apparatus, followed by static solid-state nuclear magnetic resonance (NMR) experiments using the polarized nuclear-spin system with a goniometer. In order to perform the DNP and NMR procedures in different magnetic fields, the DNP system and the NMR system are spatially separated, between which the sample can be shuttled while its orientation is controlled in a reproducible fashion. We demonstrate that the system developed in this work is operational for solid-state NMR with hyperpolarized nuclear-spin systems in static organic materials, and also discuss the application of our system.
为了推动基于超极化核自旋的静态固态核磁共振技术发展，已开发出一种系统，该系统利用X波段微波设备，通过光激发三重态中的电子自旋实现动态核极化（DNP），随后使用带有测角仪的极化核自旋系统进行静态固态核磁共振（NMR）实验。为了在不同磁场中执行DNP和NMR程序，DNP系统和NMR系统在空间上是分开的，样品可以在这两个系统之间穿梭，同时其取向以可重复的方式得到控制。我们证明，这项工作中开发的系统可用于静态有机材料中基于超极化核自旋系统的固态核磁共振，并讨论了我们系统的应用。
