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Keywords:

  • electron microscopy;
  • gold;
  • nanostructures;
  • organic–inorganic hybrid composites;
  • self-assembly

Rodlike nanocrystals typically pack in a parallel fashion as dictated by their anisometric shape and stiffness. In their Communication on page 2195 ff., E. R. Zubarev and B. P. Khanal report the spontaneous self-organization of polymer-coated metallic nanorods into circular arrays (see picture). These superstructures—“rings of nanorods”—are templated by water microdroplets that condense on the surface of nonpolar organic solvents and can be produced in near-quantitative yield in a matter of seconds.