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Keywords:

  • divalent europium;
  • luminescence;
  • magnetic properties;
  • nanocrystals;
  • synthesis design

Abstract

Magnetic and luminescent bifunctional divalent europium nanocrystals (Eu2+ NCs) are a promising class of novel advanced materials that have various applications in magneto-optic devices, catalysis, bioimaging, and solar cells. In the past few decades, much work has been carried out to study the synthesis, properties, and applications of Eu2+ NCs. The aim of this Minireview is to present the progress in preparing Eu2+ NCs based on the reported research, by describing the advantages and disadvantages of the synthesis methods. The morphologies and size are controlled through adjusting the experimental conditions. Eu2+ NCs show superior magnetic and luminescence properties simultaneously. Self-assembly and doping with other ions are important routes to improve their magnetic and luminescence properties. Their applications in magneto-optic devices are discussed. Some difficulties and challenges in the fabrication of Eu2+ NCs are discussed, such as water-soluble Eu2+ NCs and tunable luminescence in the whole visible region.