申博渊教授、程涛教授、宋斌副研究员及其合作者在Phys. Rev. Lett.上发表论文

作者：

Yusheng Liu^1,2#, Liang Xu^1,2#, Xiao Chen³*, Ning Huang³, Mengmeng Ma^1,2, Huiqiu Wang³, Bin Song^1,2*, Tao Cheng^1,2*, Fei Wei³*, Boyuan Shen^1,2*

单位：

¹Institute of Functional Nano & Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, Jiangsu, PR China.

²Jiangsu Key Laboratory of Advanced Negative Carbon Technologies, Soochow University, Suzhou, 215123, Jiangsu, PR China

³Beijing Key Laboratory of Green Chemical Reaction Engineering and Technology, Department of Chemical Engineering, Tsinghua University, Beijing 100084, PR China.

摘要：

Atomic imaging of molecules and intermolecular interactions is important for obtaining a deeper understanding of the related physics and chemistry. At a confined state in reticular matrix, molecular architecture can be stabilized for studying its static and dynamic behaviors, which is a milestone for molecular science but is still challenging in real space. Here, we use the coordination interactions between reticular building units of UiO-66 framework to maintain small molecules in a quasistatic structure. Low-dose electron microscopy is applied to resolving the atomic structures of these confined-state molecules. Meanwhile, the UiO-66 framework allows us modifying metal node structures for a controlled molecular manipulation by stretching and compressing. Then, the molecular statics and dynamics during stretching and compressing can be unraveled by directly measuring projected atomic positions, bond lengths, and peak widths via intensity profile analysis. These results perfectly support the predictions from our first-principles calculations, indicating the elastic deformation of coordination bonds and the varied vibration of C₆ rings. This Letter not only represents an efficient strategy for atomically controlling and imaging the molecular statics and dynamics in reticular chemistry, but also opens up a new pathway for studying other molecular behaviors and interactions at confined states from new perspectives of atoms and bonds.

影响因子：

9.0

分区情况：

一区

链接：

https://journals.aps.org/prl/abstract/10.1103/sd72-g4t8