Chinese Journal of Organic Chemistry ›› 2022, Vol. 42 ›› Issue (5): 1474-1482.DOI: 10.6023/cjoc202111024 Previous Articles     Next Articles

ARTICLES

基于Au3+和I构建的单-(6-二乙烯三胺-6-去氧)-β-环糊精超分子荧光开关

鲁佳佳, 杨俊丽, 古捷, 杨举, 高振杰苏丽娇, 陶欣, 袁明伟*(), 杨丽娟*(), Lijuan Yang*   

  1. 云南民族大学化学与环境学院 云南省高校智能超分子化学重点实验室 生物基材料绿色制备技术国家地合工程中心 昆明 650500
  • 收稿日期:2021-11-15 修回日期:2022-01-17 发布日期:2022-01-27
  • 通讯作者: 袁明伟, 杨丽娟, Lijuan Yang
  • 基金资助:
    国家自然科学基金(21762051); 云南省高校有机功能分子及材料科技创新团队和云南省教育厅科学研究基金资助项目

Mono-(6-diethylenetriamine-6-deoxy)-β-cyclodextrin Supramolecular Fluorescent Switch Constructed Based on Au3+ and I

Jiajia Lu, Junli Yang, Jie Gu, Ju Yang, Zhenjie Gao, Lijiao Su, Xin Tao(), Mingwei Yuan(), Lijuan Yang   

  1. Key Laboratory of Intelligent Supramolecular Chemistry at the University of Yunnan Province, National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry & Environment, Yunnan Minzu University, Kunming 650500
  • Received:2021-11-15 Revised:2022-01-17 Published:2022-01-27
  • Contact: Xin Tao, Mingwei Yuan, Lijuan Yang
  • Supported by:
    National Natural Science Foundation of China(21762051); Program for Innovative Research Team (in Science and Technology) in University of Yunnan Province and Yunnan Provincial Department of Education Science Research Fund

Mono-(6-diethylenetriamine-6-deoxy)-β-cyclodextrin (3N-β-CD) with the good water solubility was synthesized by a green and efficient method, and its structure was characterized by 1H NMR and HRMS. 3N-β-CD was used as a fluorescent probe to detect 27 kinds of ions in aqueous solution. The results showed that the fluorescence of 3N-β-CD was quenched by Au3+ and I. The performance of 3N-β-CD for detecting Au3+ and I was further explored by fluorescence titration, Job curve, nuclear magnetic resonance, infrared spectroscopy, ion interference and time response. The results diplayed that the minimum detection limit of 3N-β-CD for Au3+ was 2.73×10–6 mol/L and the binding stoichiometry ratios of 3N-β-CD with Au3+ was 1∶1, while the minimum detection limit of 3N-β-CD for I was 1.44×10–6 mol/L and the binding stoichiometry ratios of 3N-β-CD with I was 2∶1. In addition, the fluorescence intensity of 3N-β-CD gradually recovered when I was added into the mixed solution of 3N-β-CD and Au3+. Interestingly, the fluorescence intensity of 3N-β-CD also gradually recovered when Au3+ was added into the mixed solution of 3N-β-CD and I. The results exhibited that Au3+ and I could be used as fluorescence “on-off-on” to control the fluorescence behavior of 3N-β-CD, and thus enabled Au3+ and I to detect each other. On this basis, the logic gate controlling 3N-β-CD fluorescence switch was designed. This work provides a new apporach for the research and application of 3N-β-CD as a fluorescence “on-off-on” sensor.

Key words: mono-6-diethylenetriamine-β-cyclodextrin, gold ion, iodine ion, fluorescent switch, logic gate