高等学校化学学报 ›› 2019, Vol. 40 ›› Issue (4): 676-684.doi: 10.7503/cjcu20180743

• 分析化学 • 上一篇    下一篇

基于P2Mo18O626-@Tb3+溶液可逆变色-荧光开关性质对维生素C和H2O2的光谱检测

王斌1,2(), 王晓红1, 段莉梅1, 许良1, 赵鹏1, 菅金鹏1, 刘宗瑞1()   

  1. 1.内蒙古民族大学化学化工学院, 通辽028043
    2.内蒙古自治区纳米碳材料重点实验室, 通辽 028000
  • 收稿日期:2018-11-02 出版日期:2019-04-03 发布日期:2019-01-09
  • 作者简介:

    联系人简介: 王 斌, 男, 博士, 副教授, 主要从事多酸基光电功能材料方面的研究. E-mail: jluwangbin09@163.com;刘宗瑞, 男, 教授, 主要从事多酸功能材料方面的研究. E-mail: liuzr716@163.com

  • 基金资助:
    国家自然科学基金(批准号: 21501102, 21661026)、 内蒙古自治区自然科学基金(批准号: 2015BS0207, 2017MS0208)、 内蒙古自治区高等学校“青年科技英才支持计划” 项目(批准号: NJYT-18-B22)和内蒙古自治区纳米碳材料重点实验室开放课题(批准号: MDK2017025)资助.

Spectral Detection for Vitamin C and H2O2 Based on the Reversible Color Change and Luminescent Switching Properties of P2Mo18O626-@Tb3+ Mixed Solution

WANG Bin1,2,*(), WANG Xiaohong1, DUAN Limei1, XU Liang1, ZHAO Peng1, JIAN Jinpeng1, LIU Zongrui1,*()   

  1. 1.College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043, China
    2. Inner Mongolia Key Lab of Carbon Nanomaterials, Tongliao 028000, China
  • Received:2018-11-02 Online:2019-04-03 Published:2019-01-09
  • Contact: WANG Bin,LIU Zongrui E-mail:jluwangbin09@163.com;liuzr716@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.21501102, 21661026), the Natural Science Foundation of Inner Mongolia, China(Nos.2015BS0207, 2017MS0208), the Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region, China(No.NJYT-18-B22) and the Open Project of the Inner Mongolia Key Lab of Carbon Nanomaterials, China(No.MDK2017025).

摘要:

基于变色多酸P2Mo18O626-与绿光Tb3+之间的功能互补及分子间能量转移的原理, 在维生素C(VC)的还原下, P2Mo18O626-@Tb3+溶液由浅黄色变为蓝色, 发生荧光猝灭; 相反, 在H2O2氧化下, 溶液的蓝色褪去, 荧光得以恢复, P2Mo18O626-@Tb3+溶液呈现出可逆的化学响应变色及荧光开关性质. 利用紫外-可见(UV-Vis)及荧光(PL)光谱法对VC浓度进行定量检测, 分别以800 nm处的吸光度和 547 nm处荧光强度的对数值对VC浓度作图, 获得光谱法对VC检测的线性方程, 检出限分别为3.40×10-3和0.21 μmol/L; 利用UV-Vis及PL动力学方法对VC和H2O2检测的响应速度进行了考察, 响应时间分别为52和320 s; 通过UV-Vis光谱及动力学方法考察了VC检测的选择性及可重复使用性.

关键词: 多金属氧酸盐, 维生素C, 刺激响应, 荧光开关, 生化传感

Abstract:

Based on the functional complementarity and energy transfer between the reversible discoloration polyoxoanions P2Mo18O626- and green luminescent Tb3+ ions, the color of the P2Mo18O626-@Tb3+mixed solution changed from light yellow to dark blue and as meanwhile the luminescence quenched under the reduction of VC. On the contrary, the dark blue color faded and the luminescence recovered correspondingly under the oxidation of H2O2. And the P2Mo18O626-@Tb3+ mixed solution exhibited a reversible chemical response discoloration and luminescent switching properties. The VC concentrations were quantitatively measured by UV-Vis and PL spectroscopy, and the corresponding linear equations were acquired by drawing VC concentrations with UV-Vis absorbance at 800 nm and fluorescence intensity at 547 nm. And the detection limits were 3.40×10-3 and 0.21 μmol/L, respectively. The response rates of VC and H2O2 detection were investigated by UV-Vis and fluorescence kinetic methods, and the response time were 52 and 320 s, respectively. Finally, the selectivity and reusability of VC detection were studied by UV-Vis spectroscopy and kinetic methods.

Key words: Polyoxometalates, Vitamin C, Stimuli-response, Fluorescence switch, Biochemical sensor

中图分类号: