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Electronic Materials Letters

, Volume 15, Issue 1, pp 102–110 | Cite as

Synthesis and Characterization of Magnetic–Luminescent Fe3O4–CdSe Core–Shell Nanocrystals

  • Hongling Liu
  • Junhua WuEmail author
  • Ji Hyun Min
  • Ju Hun Lee
  • Young Keun KimEmail author
Original Article – Nanomaterials
  • 120 Downloads

Abstract

Nanostructures organized in unordinary spatial arrangements with multiple components such as core–shell configurations endow structures, material properties and functions that differ from the individual bulk components. In this study, we report the synthesis and characterization of bifunctional magnetic–luminescent Fe3O4–CdSe core–shell nanocrystals with core diameter and shell thickness of 10 and 2 nm, respectively, by controlled sequential reactions. The nanocrystals exhibit well-defined superparamagnetic behavior with high susceptibility at RT. Moreover, the fluorescent measurements demonstrate two major kinds of emission peaks, one at 572 nm originating from the bandgap excitons and the other at 680 nm being surface-associated. These core–shell nanocrystals, coupling the optical sensing element with the magnetic actuator in a peculiar nanostructure are thereby prospected for fundamental study and various applications where multifunctionality is required.

Graphical Abstract

Keywords

Fe3O4 CdSe Core–shell Nanocrystal Magnetism Luminescence 

Notes

Acknowledgements

This work was supported by Nano and Material Technology Development Program through the National Research Foundation of Korea (No. 2014M3A7B4052193), and by the Ministry of Trade, Industry and Energy of Korea under Industrial Technology Innovation Program (No.10080408). The Special Funds of Nanjing University of Posts and Telecommunications of China (NUPTSF, Grant Nos. NY215028 & NY217025).

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Copyright information

© The Korean Institute of Metals and Materials 2018

Authors and Affiliations

  1. 1.Department of Materials Science and EngineeringKorea UniversitySeoulRepublic of Korea
  2. 2.Institute of Molecular and Crystal Engineering, School of Chemistry and Chemical EngineeringHenan UniversityKaifengChina
  3. 3.Nobel Laureate Peter Grünberg Research CenterNanjing University of Posts and TelecommunicationsNanjingChina

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