申博渊教授、宋斌副研究员及其合作者在nat. commun.上发表论文-尊龙凯时

作者：

mengmeng ma^1,2#, qinnan yu^1,2#, jiayi zhang^1,2, xiao chen^3*, wenbo li⁴, xianlin qu⁵, xuliang zhang^1,2, jiale feng^1,2, fei wei³, jianyu yuan^1,2, tao cheng^1,2, sheng dai⁴, yi wang^5*, bin song^1,2*, boyuan shen^1,2*

单位：

¹institute of functional nano & soft materials (funsom), jiangsu key laboratory for carbon-based functional materials & devices, soochow university, suzhou 215123, jiangsu, china.

²jiangsu key laboratory of advanced negative carbon technologies, soochow university, suzhou, 215123, china.

³beijing key laboratory of green chemical reaction engineering and technology, department of chemical engineering, tsinghua university, beijing 100084, china.

⁴key laboratory for advanced materials, feringa nobel prize scientist joint research center, school of chemistry and molecular engineering, east china university of science and technology, shanghai, 200237, pr china.

⁵center for microscopy and analysis, nanjing university of aeronautics and astronautics; nanjing, 210016, jiangsu, pr china

摘要：

atomic imaging of molecules and intermolecular interactions are of great significance for a deeper understanding of the basic physics and chemistry in various applications, but it is still challenging in electron microscopy due to their thermal mobility and beam sensitivity. confinement effect and low-dose imaging method may efficiently help us achieve stable high-resolution resolving of molecules and their interactions. here, we propose a general strategy to image the confined molecules and evaluate the strengths of host-guest interactions in three material systems by low-dose electron microscopy. then, we change the guest molecules to analyze how each kind of interaction strength influences the imaging quality of these molecules by using a same parameter, the aspect ratios of imaged molecular projections. in the material systems of perovskites (ionic) and zeolites with adsorbed molecules (van der waals), we can obtain a clear image of molecular configurations by enhancing host-guest interactions. even in metal organic framework (coordination) system, the atomic structures and bonds of aromatics can be achieved. these results provide a general description on the relation between molecular images and interactions, making it possible to study more molecular behaviors in wide applications by real-space imaging.

影响因子：

14.7

分区情况：

一区

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