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Keywords:

  • layer-by-layer technique;
  • mesoporous materials;
  • nanoporous spheres;
  • polyelectrolytes;
  • silica
Thumbnail image of graphical abstract

A hole load of spheres: Nanoporous polyelectrolyte (PE) spheres are prepared through layer-by-layer deposition of oppositely charged poly(acrylic acid) and poly(allylamine hydrochloride) onto mesoporous silica spheres (with cross-linking by heating in each step), and the subsequent removal of the silica templates by hydrofluoric acid (HF; see scheme).