Mn-doped Cu-Zn-In-S/ZnS nanocrystals: optical properties and their use as time-gated fluorescence probes

  • Clay Harrison
  • Brandon Gallian
  • Guoquan Dong
  • Yu Wang
  • Jialong Zhao
  • Xiaoshan ZhuEmail author
Research Paper
Part of the following topical collections:
  1. Nanoparticles in Biotechnology and Medicine


In this work, Mn-doped Cu-Zn-In-S/ZnS nanocrystals ((Mn:CZIS/ZnS NCs, 3~5 nm in sizes) were prepared by varying the Cu and Mn level in synthesis, and their optical properties including optical spectra and fluorescence lifetimes were investigated. It is found that with a certain range of the Cu or Mn level, the NCs present fluorescence peaks at around 605 nm, but their fluorescence lifetimes do be affected by the Cu or Mn level. Significant NC fluorescence red-shift and lifetime drop-off are observed when the Cu level reaches a much high level. The possible role of Cu and its interaction with Mn in NC fluorescence mechanisms were discussed. The use of Mn:CZIS/ZnS NCs as highly sensitive time-gated probes was demonstrated through a biotin-avidin assay.

Graphical abstract


Cu-Zn-In-S nanocrystal Mn doping Optical properties Time-gated probes Synthesis 



This research was supported by Nevada Research and Innovation Corporation and the Nevada Undergraduate Research Award Program (NURAP). CH thanks the award from the NURAP, and BG thanks the University of Nevada Reno for scholarship.

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Supplementary material

11051_2019_4666_MOESM1_ESM.doc (884 kb)
ESM 1 (DOC 883 kb)


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Copyright information

© Springer Nature B.V. 2019

Authors and Affiliations

  • Clay Harrison
    • 1
  • Brandon Gallian
    • 1
    • 4
  • Guoquan Dong
    • 2
  • Yu Wang
    • 3
  • Jialong Zhao
    • 3
  • Xiaoshan Zhu
    • 1
    • 4
    Email author
  1. 1.Department of Electrical and Biomedical EngineeringUniversity of Nevada RenoRenoUSA
  2. 2.NPLuminescenceRenoUSA
  3. 3.Key Laboratory of Functional Materials Physics and Chemistry of The Ministry of EducationJilin Normal UniversitySipingChina
  4. 4.Biomedical Engineering ProgramUniversity of Nevada RenoRenoUSA

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