高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (7): 1544-1551.doi: 10.7503/cjcu20200085

• 有机化学 • 上一篇    下一篇

烯醇-酮互变异构型亚胺衍生物对Co2+的高选择性识别

曹成1,2,曹甜1,闫盆吉1,王清云1,岳国仁1,2,籍向东1,*()   

  1. 1.河西学院甘肃省河西走廊特色资源利用重点实验室, 化学化工学院, 张掖 734000
    2.甘肃省凯源生物技术开发中心, 张掖 734000
  • 收稿日期:2020-02-19 出版日期:2020-07-10 发布日期:2020-04-05
  • 通讯作者: 籍向东 E-mail:jxdsn@163.com
  • 基金资助:
    国家自然科学基金(21761011);甘肃省科技计划项目(18JR3RG205);甘肃省高等学校科研项目(2018A-088)

High Selectivity of Enol-keto Tautomers Imine Derivative for the Recognition of Co2+

CAO Cheng1,2,CAO Tian1,YAN Penji1,WANG Qingyun1,YUE Guoren1,2,JI Xiangdong1,*()   

  1. 1. Key Laboratory of Hexi Corridor Resources Utilization of Gansu, College of Chemistry and Chemical Engineering, Zhangye 734000, China
    2. Kaiyuan Bio-Tech Development Center, Hexi University, Zhangye 734000, China
  • Received:2020-02-19 Online:2020-07-10 Published:2020-04-05
  • Contact: Xiangdong JI E-mail:jxdsn@163.com
  • Supported by:
    † National Natural Science Foundation of China(21761011);Science and Technology Project of Gansu Province, China(18JR3RG205);Scientific Research Foundation of the Higher Education Institutions of Gansu Province, China(2018A-088)

摘要:

设计合成了新型烯醇-酮互变异构型亚胺衍生物R, 考察了受体R对18种阳离子的紫外光谱及裸眼识别性能. 结果表明, 该受体对Co2+, Fe2+和Ni2+表现出良好的紫外光谱识别能力, 且可实现对Co2+相对明显的裸眼单一识别. Job曲线表明, 受体R与Co2+形成了1:1型金属配合物, 且检出限可达4.14×10-7 mol/L. 制备了受体R裸眼比色识别试纸; 根据理论计算及核磁滴定实验结果阐述了Co2+离子识别过程中烯醇-酮互变异构机理.

关键词: 希夫碱受体, 离子检测, Co2+化学传感器, 裸眼识别

Abstract:

A new enol-keto tautomers imine derivative R was designed and synthesized. The recognition property of the receptor R for 18 kinds of cations was studied by ultraviolet absorption spectroscopy(UV-Vis) analysis and naked-eye detection. The results showed that the receptor R had significant recognition ability for Co2+, Fe2+ and Ni2+ through UV-Vis analysis, which found single colorimetric recognition of Co2+ by color changes. The Job’s plot indicated that the formation of complex between receptor R and Co2+ was in 1:1 stoichiometric ratios, and the limit of lowest detection of receptor R for Co2+ was 4.14×10-7 mol/L. Meanwhile, naked recognition paper of receptor R was prepared. The enol-keto tautomerism of receptor R was illustrated during recognition process through theoretical calculation and nuclear magnetic resonance titration.

Key words: Schiff base receptor, Ion detection, Chemosensor for Co2+, Naked-eye detection

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