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Microwave-assisted facile synthesis of polymer dots as a fluorescent probe for detection of cobalt(II) and manganese(II)

  • Li Zhao
  • Huiyu Li
  • Haochi Liu
  • Meitong Liu
  • Ning Huang
  • Zhongyu He
  • Yi Li
  • Yanhua ChenEmail author
  • Lan DingEmail author
Research Paper
  • 25 Downloads

Abstract

Polymer dots (PDs) were synthesized at 200 °C for 90 min via a microwave-assisted method. The PDs were characterized by fluorescence spectroscopy, UV-vis absorbance spectra, transmission electron microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The PDs display blue fluorescence under 320 nm excitation with a fluorescent quantum yield of 13.48%. The PDs show stable fluorescence against ion strength and light bleaching, especially extreme pH. Significant pH-independent behavior may relate to –OH of polyvinyl alcohol (PVA) retained on the surface of PDs. The bright fluorescence of PD solution can be distinctly quenched by cobalt ion (Co2+) and manganese ion (Mn2+) in PD solution. For Co2+, the linear was from 3.4 to 50.0 μmol L−1 and 46.7 to 600.0 μmol L−1 with the limit of detection (LOD) of 1.0 μmol L−1. The LOD of Mn2+ was 0.4 μmol L−1 in the range from 1.5 to 100.0 μmol L−1. Self-film-forming PDs (FPDs) were obtained via dropping PD solution on quartz glass. The bright blue fluorescence of FPDs can be obviously quenched by Co2+ and Mn2+. This paper may provide an efficient and flexible approach to the application of on-site detection.

Graphical abstract

Graphical abstract

Keywords

Polymer dots Fluorescent Self-film forming Co2+ Mn2+ 

Notes

Funding information

This work was financially supported by the National Science Foundation of China (NSFC) (No. 201804049) and the Development Program of the Ministry of Science and Technology of Jilin Province, China (No. 20180201011GX).

Compliance with ethical standards

Conflict of interest

The authors declare that they have no competing interests.

Supplementary material

216_2019_1678_MOESM1_ESM.pdf (457 kb)
ESM 1 (PDF 456 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Li Zhao
    • 1
  • Huiyu Li
    • 1
  • Haochi Liu
    • 1
  • Meitong Liu
    • 1
  • Ning Huang
    • 1
  • Zhongyu He
    • 1
  • Yi Li
    • 2
  • Yanhua Chen
    • 1
    Email author
  • Lan Ding
    • 1
    Email author
  1. 1.College of ChemistryJilin UniversityChangchunChina
  2. 2.State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of ChemistryJilin UniversityChangchunChina

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