Jin Yanmei, Huang Tinghuan, Zhao Weiwei, Yang Xinan, Meng Ye, Ma Peihua
Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University Guiyang 550025 People's Republic of China
RSC Adv. 2020 Oct 8;10(61):37369-37373. doi: 10.1039/d0ra07988j. eCollection 2020 Oct 7.
Self-assembly between symmetrical dicyclohexyl-substituted cucurbit[6]uril (abbreviated as (CyH)Q[6]) and cyclopentanocucurbit[6]uril (CyPQ[6]) as hosts and 1-(4-methoxyphenyl)piperazine (MeOPP) as a guest molecule has been studied by means of single-crystal X-ray diffraction analysis, NMR, MALDI-TOF mass spectrometry, and other characterization methods. The experimental results showed that the self-assembly was driven by the formation of exclusion complexes by the cucurbit[]uril and the guest, that is, supramolecular interaction between the negative charge of the cucurbit[]uril portals and a coordination polymer guest. Complexes were formed between the positive charge of the cucurbit[]uril outer wall and inorganic anions, thus generating self-assemblies with multi-dimensional and multi-level supramolecular frameworks.
通过单晶X射线衍射分析、核磁共振、基质辅助激光解吸电离飞行时间质谱及其他表征方法，研究了对称的二环己基取代葫芦[6]脲（简称为(CyH)Q[6]）和环戊烷并葫芦[6]脲（CyPQ[6]）作为主体与客体分子1-(4-甲氧基苯基)哌嗪（MeOPP）之间的自组装。实验结果表明，自组装是由葫芦[n]脲与客体形成包结配合物驱动的，即葫芦[n]脲端口的负电荷与配位聚合物客体之间的超分子相互作用。葫芦[n]脲外壁的正电荷与无机阴离子之间形成配合物，从而生成具有多维和多层次超分子框架的自组装体。
