A novel fused bi-macrocyclic host for sensitive detection of Cr_(2)O_(7)^(2-)based on enrichment effect  

作　　者：Ting-Ting Huang Jin-Fa Chen Juan Liu Tai-Bao Wei Hong Yao Bingbing Shi Qi Lin 

机构地区：[1]Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education,Key Laboratory of Eco-environmental Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Lanzhou 730070,China [2]Key Laboratory of Environment-Friendly Composite Materials of the State Ethnic Affairs Commission,Gansu Provincial Biomass Function Composites Engineering Research Center,College of Chemical Engineering,Northwest Minzu University(Northwest University for Nationalities),Lanzhou 730000,China

出　　处：《Chinese Chemical Letters》2024年第7期291-295,共5页中国化学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(NSFC,Nos.22065031,22061039,22001214,22165027);the top-notch talent project in Gansu province,the Key R&D Program of Gansu Province(No.21YF5GA066);Gansu Province College Industry Support Plan Project(No.2022CYZC-18);Natural Science Foundation of Gansu Province(Nos.2020–0405-JCC-630,20JR10RA088);The star of innovation(No.2023CXZX244)。

摘　　要：Improving the highly selective and sensitive binding of chemosensor to target guest is always very challenging.In order to solve this issue,herein,the enrichment effect was introduced into the design of chemosensor molecule.A novel bi-fused-macrocyclic host molecule BPN1 was synthesized by bridging a pillar[5]arene and a naphthalene diimide(NDI)group through hydrogen-bond-rich chain.In the BPN1,the naphthalimide side ring is outside the cavity of the pillar[5]arene.In addition,Cr(VI)greatly threat human health and the environment due to its severe toxicity,and it is very important to develop effective chemosensor for sensitive and selective detection of Cr_(2)O_(7)^(2-)or its ion pairs.In this paper,the novel bi-fused-macrocyclic host molecule BPN1 can recognize Cr_(2)O_(7)^(2-)with high selectivity and sensitivity.The mechanism of BPN1 recognition of Cr_(2)O_(7)^(2-)was studied through experiments and density functional theory(DFT),the results show that BPN1 could supply enrichment effect to bind Cr_(2)O_(7)^(2-)through multiple weak interactions such as hydrogen bonds and anion-π,and achieve highly sensitive and selective detection of Cr_(2)O_(7)^(2-).It is a significant and feasible strategy for improve high selectivity and sensitivity of host to specific objects by using the enrichment effect of fused bi-macrocyclic.

关 键 词：arene Bi-macrocyclic Detection of Cr_(2)O_(7)^(2−) DFT The enrichment effect 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] O641.3[自动化与计算机技术—控制科学与工程]