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  • 出生日期:1974-04-10
  • 电子邮箱:
  • 入职时间:2002-08-01
  • 所在单位:材料科学与工程学院
  • 学历:博士研究生毕业
  • 办公地点:5J507
  • 性别:
  • 联系方式:QQ 1152469598 手机 18678770197
  • 学位:理学博士学位
  • 在职信息:在职
  • 毕业院校:山东大学
  • 学科:材料科学与工程
论文成果
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Fluorescence Emission of Polyethylenimine-Derived Polymer Dots and Its Application to Detect Copper and Hypochlorite Ions
  • 发表刊物:ACS Appl. Mater. Interfaces
  • 关键字:polymer dots, copper ions, hypochlorite ions, fluorescent sensor, nonconjugated fluorescent polymers
  • 摘要:: Polymer dots with nonconjugated groups that are facile to synthesize and environmentally friendly generally attract substantial interest. However, their fluorescence-emitting mechanisms are not clear. In this paper, nonconjugated polymer dots (NPDs) are synthesized by amidation reaction between polyethylenimine (PEI) and citric acid (CA), then self-assemble into rice-like dots in aqueous phase with a high fluorescence quantum yield. Such nitrogen-containing nonconjugated compounds N-PDs are believed to be inherently fluorescent, and the reported reasons for fluorescence-emitting are discussed. Importantly, these N-PDs can be used as an excellent fluorescent probe to detect Cu2+ and ClO− inaqueous solutions. Cu2+ could combine with the PEI moiety of the N-PDs to form a copper amine complex and then quench the fluorescence by an internal filtration effect. ClO− could oxidize the hydroxyl groups on the surface of the N-PDs to form a positive charge, blocking electron transfer between the hydroxyl groups and the chromophore groups. Finally, the sensor was successfully applied to the detection of Cu2+ and ClO− in environmental water samples.
  • 论文类型:SCI
  • 文献类型:Journal Article
  • 卷号:2019
  • 期号:11
  • 页面范围:32489−32499
  • 是否译文:
  • 发表时间:2019-08-08