核磁共振弛豫现象是由原子核间以及原子核与周围介质间进行能量传递而发生的。而弛豫时间正是描述这种能量传递过程的重要参数。由于弛豫现象与分子运动有关,所以通过测量弛豫时间可研究分子的运动状态及运动的活化能,进而可研究分子的结构。因此,近年来自旋—晶格弛豫时间的研究已越来越引起人们的重视。目前已被 The phenomenon of NMR relaxation occurs due to the energy transfer between the nuclei and between the nucleus and the surrounding medium. The relaxation time is an important parameter to describe this energy transfer process. Because the relaxation phenomenon is related to the molecular motion, the molecular dynamics can be studied by measuring the relaxation time, and then the molecular structure can be studied. Therefore, in recent years, spin-lattice relaxation time has drawn more and more attention. Has been