MAPbCl3钙钛矿中甲胺阳离子运动的固体2H NMR研究
梁佳琪,乔文成,姚叶锋

Solid-state 2H NMR Study of the Motion of CH3NH3+ in MAPbCl3 Perovskite
Jia-qi LIANG,Wen-cheng QIAO,Ye-feng YAO
图2 MA在静止状态下和围绕C-N键(Cn轴)快速内旋转时的拟合2H NMR谱.在左侧MA的内旋转运动模型(模型Ⅰ)中,C-D键与Cn轴之间的夹角θ = 70˚,旋转速率为快极限(fast limit).为了使图更加清晰,MA中部分原子被省略
Fig.2 Simulated 2H NMR spectra showing the effect of the rotation along the Cn bond. The Cn denotes the rotation axis and θ = 70˚ denotes the open angle between the C-D bond and Cn. In the simulation, the speed of rotation is set to fast limit. Some atoms in the MA cation are omitted for clarity