一种基于不可逆酰胺键与C―N单键的多吡咯分子笼:结构与阴离子络合  

A polypyrrolic molecular cage consisting of irreversible amide and C―N single bonds:Structure and anion binding properties

作　　者：韦德惠 李欣 普俊铭 张军 陈喜[1] 张展 WEI Dehui;LI Xin;PU Junming;ZHANG Jun;CHEN Xi;ZHANG Zhan(School of Chemistry and Materials Science,South-Central Minzu University,Wuhan 430074,China)

机构地区：[1]中南民族大学化学与材料科学学院,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2023年第4期450-456,共7页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(22171289)。

摘　　要：利用化学还原亚胺键合成了一种基于不可逆酰胺键与碳-氮单键的化学稳定性多吡咯分子笼,用核磁、质谱和单晶表征其结构,并利用核磁共振技术,对该分子笼在氯仿及DMSO中的阴离子识别性能进行了研究.结果表明:该分子笼对诸如Cl^(-)、Br^(-)、I^(-)、HCO_(3)^(-)、AcO^(-)及NO_(3)^(-)等阴离子具有中等程度的亲和力,且与这些阴离子以快交换的方式按照1∶1的模式络合;相比之下,该分子笼与F^(-)、SO_(4)^(2-)和H_(2)PO_(4)^(-)这些阴离子则以慢交换的方式络合.A chemically stable polypyrrolic cage constructed by irreversible amide and C—N bonds was synthesized through chemical reduction of its imine precursor.The structure of the molecular cage was characterized using NMR,MS and XRD.The anion binding properties were studied in deuterated chloroform or DMSO using NMR spectroscopy.The results indicated that this cage had a moderate affinity for anions such as Cl^(-),Br^(-),I^(-),HCO_(3)^(-),AcO^(-)and NO_(3)^(-)in CDCl_(3),and complexed with these anions in a 1∶1 mode through fast exchange,while the interaction with F-,SO_(4)^(2-)and H_(2)PO_(4)^(-)displayed slow anion-exchange kinetics.

关 键 词：分子笼 阴离子络合 酰胺-胺类分子笼 结构 

分 类 号：O625.6[理学—有机化学]