Chinese Journal of Organic Chemistry ›› 2019, Vol. 39 ›› Issue (10): 2829-2834.DOI: 10.6023/cjoc201903053 Previous Articles     Next Articles

Special Issue: 荧光探针-生物传感合辑 有机超分子化学合辑


基于芳基糠醛功能化巴比妥酸衍生物识别和分离Hg 2+/Fe 3+的新型荧光传感器

朱文博, 朱伟, 丁金东, 马小强, 姚红, 张有明, 林奇*(), 魏太保*()   

  1. 西北师范大学化学化工学院 生态环境相关高分子材料教育部重点实验室 甘肃省高分子材料重点实验室 兰州 730070
  • 收稿日期:2019-03-24 修回日期:2019-05-13 发布日期:2019-06-06
  • 通讯作者: 林奇,魏太保;
  • 基金资助:

A Novel Fluorescent Sensor Based on Aryl-furfural Functionalized Barbituric Acid for Recognition and Separation of Hg 2+/Fe 3+

Zhu Wenbo, Zhu Wei, Ding Jindong, Ma Xiaoqiang, Yao Hong, Zhang Youming, Lin Qi*(), Wei Taibao*()   

  1. Key Laboratory of Polymer Materials of Gansu Province, College of Chemistry and Chemical Engineering,Northwest Normal University, Lanzhou 730070
  • Received:2019-03-24 Revised:2019-05-13 Published:2019-06-06
  • Contact: Lin Qi,Wei Taibao;
  • Supported by:
    Project supported by the National Natural Science Foundation of China(21662031);Project supported by the National Natural Science Foundation of China(21661028);Project supported by the National Natural Science Foundation of China(21574104);Project supported by the National Natural Science Foundation of China(21262032)

A novel fluorescent sensor based on 5-(3-nitrophenyl)-furan-2-carbaldehyde functionalized barbituric acid derivative (QS) was successfully synthesized. QS was characterized by 1H NMR, 13C NMR and MS. The maximum fluorescence emission wavelength of QS in dimethyl sulfoxide (DMSO) solution was determined to be 498 nm and green fluorescence was emitted under 365 nm ultraviolet lamp. QS showed different fluorescence identification ability for aqueous solution of Hg 2+ and Fe 3+. Hg 2+ can enhance the fluorescence of probe QS to orange, and Fe 3+ quenches its fluorescence, thus realizing real- time detection. The limits of detection of QS for Hg 2+ and Fe 3+ are 3.25×10 –8 and 4.0×10 –8 mol? L –1, respectively. The fluorescence measurements and MS studies suggest that the binding stoichiometry ratios of QS with Hg 2+ and Fe 3+ are recognized as 1∶1, respectively. The possible modes of QS with Hg 2+ and Fe 3+ are proposed. The addition of $H_{2}PO_{4}^{-}$ caused the fluorescence of QS-Fe recover, indicating that QS can be used for cyclic detection of Fe 3+. More importantly, the separation percentages of the solid QS for Hg 2+and Fe 3+ are 92.0% and 91.8% in aqueous solution, respectively, indicating that it has excellent ingestion capacity.

Key words: barbituric acid derivatives, fluorescence sensor, iron ion, mercury ion, ion absorption