Pillar[5]arene and Azine Derivative Assembly Improved Dual-Channel Detection of CN^(-)  

作　　者：Qing-Ling Su Jin-Fa Chen Xiao-Mei Sun Juan Liu Xin-Yu Dai Tai-Bao Wei Hong Yao 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,Gansu 730070,China [2]Key Laboratoryof 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 Universityfor Nationalities),Xibei Xincun,Lanzhou,Gansu 73000o,China

出　　处：《Chinese Journal of Chemistry》2024年第20期2471-2478,共8页中国化学（英文版）

基　　金：supported by the NSFC(Nos.22065031,22061039,22001214,22165027);the Fundamental Research Funds for the Central Universities(No.31920230145);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-630,20JR10RA088,21JR1RA220);Gansu Province Science Foundation for Youths(23JRRA690);Northwest Normal University Young Scholars Research Capacity Improvement Program(NWNU-LKQN2023-05).

摘　　要：The cyanide anion(CN^(–))is known to be one of the most toxic anions.Therefore,there is an urgent need to develop a reliable,sensitive,selective,rapid and effective method for the detection of CN^(–).Here,a self-assembly strategy based on pillar[5]arene P5 and azine derivative AZ was used to construct supramolecular sensors,and it was found that the detection effect of CN^(–)was significantly improved by the assembly strategy.The sensitivity of the assembled sensor P5-AZ to CN^(–)is more than 10 times higher than that of AZ.The detect mechanism was further investigated by theoretical calculations and 1H NMR.The results showed that AZ detects CN–by a deprotonation process with fluorescence enhancement,while P5-AZ improves the sensitivity of CN^(–)recognition through hydrogen bonding,anion-πand anion-dipole interactions,as well as the strong bonding ability of the assembly.Supramolecular assembly P5-AZ has the advantages of low toxicity,high sensitivity,and more importantly,it provides a method to detect CN^(–)sensitivity in the aqueous phase and organisms by host-guest assembly.

关 键 词：Host-guest assembly Improves sensing sensitivity arene Azine derivative Cyanide Supramolecular sensors Energy transfer Colorimetric fluorescence dual-channel Fluorescence cell imaging 

分 类 号：O62[理学—有机化学]