对十四烷氧基亚胺衍生物对CN-的高选择性“双响应”识别
High Selectivity of p-Tetradecyloxy Imine Derivative for “Double Response” Recognition of CN-
作者单位E-mail
籍向东 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000  
刘彩云 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000  
张书芳 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000  
王文霞 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000  
岳国仁 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000
河西学院, 甘肃凯源生物技术开发中心, 张掖 734000 
 
曹成 河西学院化学化工学院, 甘肃省河西走廊特色资源利用重点实验室, 张掖 734000
河西学院, 甘肃凯源生物技术开发中心, 张掖 734000 
caochxu@126.com 
摘要: 设计并合成了一种新型长链烷氧基亚胺衍生物R,系统研究了受体R对10种阴离子的紫外可见(UV-Vis)及裸眼识别性能。结果表明,该受体对F-、Ac-和CN-表现出良好的UV-Vis识别能力,且在H2O/DMSO(1:1,V/V)体系中可对CN-实现单一裸眼识别。受体R识别CN-的检出限可达7.02 μmol·L-1,并制备了受体R对阴离子的检测试纸。Job曲线表明受体与阴离子以1:2的比例结合。最后利用UV-Vis滴定、核磁滴定、质谱及理论计算推测了CN-离子的识别机理,在CN-离子核磁滴定中发现了“反应型”与“氢键型”双响应识别现象,而在F-的核磁滴定中发生去质子化过程。
关键词: 亚胺受体  离子检测  CN-化学传感器  裸眼识别
基金项目: 国家自然科学基金(No.21761011)、甘肃省基础研究创新群体项目(No.17JR5RA306)、甘肃省科技计划资助项目(No.18JR3RG205)和甘肃省高等学校科研项目(No.2018A-088)资助。
Abstract: A new long-chain alkoxy imine derivative R was designed and synthesized. The recognition property of the receptor R for 10 kinds of anions was studied by UV-Vis analysis and naked-eye detection. The results showed that the receptor R had significant recognition ability for F-, Ac- and CN- through UV-Vis analysis, which found single colorimetric recognition of CN- by naked-eye recognition in H2O/DMSO (1:1, V/V) solution. The LOD (limit of lowest detection) of receptor R for CN- was 7.02 μmol·L-1, and naked recognition paper of receptor R was prepared. The Job's plot indicated that the formation of complex between receptor R and CN- was in 1:2 stoichiometric ratio. The recognition mechanism of receptor R was illustrated through UV titration, NMR titration, MS and theoretical calculation. The "reaction" and "hydrogen-bond" double response recognition phenomena and deprotonation were found in the CN- and F- titrations, respectively.
Keywords: imine base receptor  ion detection  chemosensor for CN-  naked-eye detection
投稿时间:2020-05-12 修订日期:2020-10-29
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籍向东,刘彩云,张书芳,王文霞,岳国仁,曹成.对十四烷氧基亚胺衍生物对CN-的高选择性“双响应”识别[J].无机化学学报,2021,37(2):221-228.
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