Research Article


2019, 12(3): 537–542


Guest selectivity in the supramolecular host networks fabricated by van der Waals force and hydrogen bond

Xuan Peng1,3,§, Yanfang Geng1,3,§, Min Zhang2, Faliang Cheng2 (*), Linxiu Cheng1,3, Ke Deng1,3 (*), and Qingdao Zeng1,2,3 (*)

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1 CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology (NCNST), No.11 ZhongguancunBeiyitiao, Beijing 100190, China
2 Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China
3 Center of Materials Science and Optoelectonics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
§ Xuan Peng and Yanfang Geng contributed equally to this work.

Keywords: selective adsorption, COR, host–guest architecture
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  • Abstract
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Here, the structural transformations of H4ETTC induced by coronene (COR) and selective adsorption behaviors of COR in different templates were investigated by scanning tunnelling microscope (STM). It was discovered that the assembled architecture of H4ETTC at the HOPG/ heptanoic acid interface depended on the concentration of COR, and the clusters of COR were obtained in the kagomé nanoporous network of H4ETTC molecules at a high concentration of COR solution. In addition, COR clusters can also be formed in the hexagonal porous structure of hexaphenylbenzene (HPB) molecules modified by alkyl chains at the HOPG/heptanoic acid interface. When both H4ETTC and HPB assembly structures, based on hydrogen bonding and van der Waals force respectively, were selected as the host templates, COR showed selectivity for HPB template to form HPB/COR hexagonal host–guest architecture. Density functional theory (DFT) calculations were also performed to disclose the mechanisms involved.
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Guest selectivity in the supramolecular host networks fabricated by van der Waals force and hydrogen bond. Nano Res. 2019, 12(3): 537–542

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