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Keywords:

  • Eu(III) complex;
  • MWCNTs;
  • anisotropy;
  • magneto-oriented material;
  • luminescence;
  • phase transitions;
  • lanthanides;
  • carbon nanotubes
Thumbnail image of graphical abstract

The anisotropic emission properties of an Eu(III)-MWCNTs-based nanocomposite PNIPAAm hydrogel is induced upon application of a 10 T magnetic field, the latter dictating the alignment of the carbon nanotubes. This structuration creates directional highways for light to be preferentially absorbed, giving rise to orientation-dependent light emission intensity. Thermal control of the transparency of the aqueous matrix also allowed a stimulus-induced switching of the materials’ emission properties.