Guest selectivity in the supramolecular host networks fabricated by van der Waals force and hydrogen bond
Guest selectivity in the supramolecular host networks fabricated by van der Waals force and hydrogen bond
复制标题
范德华力和氢键制备的超分子主体网络中的客体选择性
DOI：
10.1007/s12274-018-2247-x
复制
发表时间：
2019-03-01
期刊：
影响因子：
9.9
通讯作者：
Zeng, Qingdao
中科院分区：
文献类型：
--
作者：
Peng, Xuan;Geng, Yanfang;Zeng, Qingdao
本文利用扫描隧道显微镜（STM）研究了晕苯（COR）诱导的H4 ETTC的结构转变及其在不同模板中的选择性吸附行为。研究发现，H4 ETTC在HOPG/庚酸界面的组装结构依赖于COR的浓度，在高浓度的COR溶液中，H4 ETTC分子在kagome纳米多孔网络中形成了COR簇.此外，在六苯基苯（HPB）分子的六方孔结构中，在HOPG/庚酸界面处也可以形成COR簇。当H4 ETTC和HPB分别基于氢键和货车德瓦尔斯力的组装结构作为主体模板时，COR对HPB模板表现出选择性，形成HPB/COR六方主客体结构。密度泛函理论（DFT）计算也进行了披露所涉及的机制。
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 kagome 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.