基于桥联柱[5]芳烃的刺激响应性荧光超分子聚合物用于硝基化合物的传感检测  

A stimulus-responsive fluorescent supramolecular polymer based on a bridged pillar[5]arene for the detection of nitro-compounds

作　　者：殷龙珠 王星火 王艳[1] 汤钧[1] 杨英威[1] YIN Long-zhu;WANG Xing-huo;WANG Yan;TANG Jun;YANG Ying-wei(College of Chemistry,Jilin University,Changchun 130012,China)

机构地区：[1]吉林大学化学学院,吉林长春130012

出　　处：《分子科学学报》2021年第1期45-53,共9页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(51673084);吉林省省校共建项目-新材料专项(SXGJSF2017-3)。

摘　　要：本文利用二硫键桥联的双柱[5]芳烃和烷基溴修饰的四苯基乙烯之间的主客体作用制备了一种荧光超分子聚合物.在谷胱甘肽的存在下,柱芳烃桥链上二硫键的断裂使得该荧光超分子聚合物被破坏,体系荧光猝灭.值得注意的是,该荧光超分子聚合物能够有效地检测硝基化合物,最低检测限可达10^(-8) mol·L^(-1),表明其在硝基化合物检测方面具有良好的应用前景.Supramolecular polymers fabricated through noncovalent interactions represent the integration of polymer science and supramolecular chemistry and have brought new vigor and vitality into synthetic chemistry and materials science.Their polymeric structure and the tunable nature of noncovalent interactions endow supramolecular polymers with not only traditional polymeric characteristics but also dynamic properties,such as responsiveness to environmental stimuli,self-healing,recycling,and degradability.Furthermore,noncovalent interactions based on molecular recognition/assemblyincluding host-guest interactions and multiple hydrogen bonds are strong enough to achieve facile fabrication of functional polymeric materials with complex architectures.The design and development of novel building blocks with strong binding interactions is always an important topic in this area.Therein,host-guest interactions,as a crucial type of noncovalent interactions between macrocyclic hosts and the corresponding guests,have shown high efficiencies and distinct properties in constructing supramolecular polymers.Pillararenes,as an emerging class of macrocyclic hosts next to crown ethers,cyclodextrins,calixarenes,and cucurbiturils,possess a hydrophobic pillar-shaped cavity with two modifiable rims.Their unique rigid structures and desirable synthetic yields for further functionalization provide a promising platform for the construction of various drug delivery systems,sensors,green catalysts,molecular machines,and so on.Until now,there are lots of good examples of supramolecular polymers constructed by pillararene-based molecular recognition,however,supramolecular polymers constructed by a bridged bis(pillar[5]arene)s and certain emissive guests through host-guest interactions are still rare.Thus,it is necessary to conduct some relevant research to promote the development of pillararene-based supramolecular polymers.In the past few decades,reliable and accurate detection of explosives and their precursors has be-come an internationally co

关 键 词：超分子聚合物 刺激响应 传感检测 主客体化学 柱芳烃 

分 类 号：O626[理学—有机化学]