A novel pillar[5]arene-cucurbit[10]uril based host-guest complex: Synthesis, characterization and detection of paraquat  

作　　者：Yang Luo Wei Zhang Jie Zhao Mao-Xia Yang Qian Ren Carl Redshaw Zhu Tao Xin Xiao 

机构地区：[1]Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province,Institute of Applied Chemistry,Guizhou University,Guiyang 550025,China [2]Department of Chemistry,University of Hull,Hull HU67RX,United Kingdom

出　　处：《Chinese Chemical Letters》2023年第3期134-137,共4页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.21861011);the Innovation Program for Highlevel Talents of Guizhou Province(No.2016-5657);the Science and Technology Fund of Guizhou Province(No.[2020]-1Y046);University of Hull for support。

摘　　要：The macrocyclic family comprising pillar[n]arenes and cucurbit[n]urils have received much attention recently. However, studies on the construction of supramolecular complexes formed directly with derivatized pillar[n]arenes and cucurbit[n]urils are scant. Given the interest in such systems, herein we have synthesized a new type of naphthalene-derivatized pillar[n]arene NTP5 and selected Q[10] as the host molecule. The 4-[2-(1-naphthalenyl)ethenyl]pyridine of NTP5 is encapsulated by Q[10] and formed a hostguest complex in water-acetic acid(1:1) solution accompanied by enhanced fluorescence, which changed the morphology of NTP5 from a sphere to a porous form. In addition, the fluorescence of Q[10]-NTP5 can be quenched by the addition of the highly toxic pesticide paraquat(PQ), and the mechanism was shown to be the formation of a new charge transfer ternary system of Q[10]-NTP5-PQ. This work provides new ideas for the contribution of supramolecular assemblies based on derivatized pillar[n]arenes and their combination with cucurbit[n]urils and reveals their potential applications.

关 键 词：Pillar[n]arene Cucurbit[n]uril PARAQUAT Supramolecular assembly DETECTION 

分 类 号：O641.3[理学—物理化学]