Materials Science Factory, Instituto de Ciencia de Materiales de Madrid, CSIC, c/ Sor Juana Inés de la Cruz 3, 28049, Madrid, Spain.
Sci Rep. 2017 Sep 11;7(1):11088. doi: 10.1038/s41598-017-11479-4.
Metal-organic frameworks (MOFs) are a class of crystalline materials with a variety of applications in gas storage, catalysis, drug delivery or light harvesting. The optimization of those applications requires the characterization of MOF structure in the relevant environment. Dynamic force microscopy has been applied to follow dynamic processes of metal-organic-framework material. We provide images with spatial and time resolutions, respectively, of angstrom and seconds that show that Ce-RPF-8 surfaces immersed in water and glycerol experience a surface reconstruction process that is characterized by the diffusion of the molecular species along the step edges of the open terraces. The rate of the surface reconstruction process depends on the liquid. In water it happens spontaneously while in glycerol is triggered by applying an external force.
金属-有机骨架（MOFs）是一类具有多种应用的结晶材料，包括气体储存、催化、药物输送或光捕获。这些应用的优化需要在相关环境中对 MOF 结构进行表征。动态力显微镜已被应用于跟踪金属-有机骨架材料的动态过程。我们提供的图像具有分别为埃和秒的空间和时间分辨率，显示 Ce-RPF-8 表面浸入水和甘油中会经历一个表面重构过程，其特征是分子物种沿着开阔台地的台阶边缘扩散。表面重构过程的速率取决于液体。在水中，它是自发发生的，而在甘油中，则是通过施加外力触发的。
