使用金纳米颗粒对分层金属有机框架中的功能域进行追踪与可视化

Qin Xuedi, He Sanfeng, Wu Jiasheng, Fan Yaqi, Wang Fang, Zhang Songwei, Li Siqi, Luo Lianshun, Ma Yanhang, Lee Yongjin, Li Tao

School of Physical Science and Technology, ShanghaiTech University, Shanghai, 201210, China.

Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201203, China.

ACS Cent Sci. 2020 Feb 26;6(2):247-253. doi: 10.1021/acscentsci.9b01205. Epub 2020 Jan 22.

We report here a new technique for the identification and visualization of functional domains in stratified metal-organic frameworks (MOFs). The technique, namely, gold diffusion enabled domain identification, utilizes the diffusion of Au nanoparticles within MOF cavities to track and selectively stain the more Au-philic domain in an MOF particle thereby allowing direct observation of domains, determination of domain sequences, and, in certain cases, domain boundaries under transmission electron microscopy. This method is an excellent tool for studying MOF materials with complex domain hierarchy.

我们在此报告一种用于识别和可视化分层金属有机框架（MOF）中功能域的新技术。该技术，即金扩散实现的域识别，利用金纳米颗粒在MOF空腔内的扩散来追踪并选择性地标记MOF颗粒中更亲金的域，从而能够在透射电子显微镜下直接观察域、确定域序列，以及在某些情况下确定域边界。该方法是研究具有复杂域层次结构的MOF材料的出色工具。