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Keywords:

  • gold;
  • nanostructures;
  • self-assembly;
  • superstructures;
  • Raman spectroscopy
Thumbnail image of graphical abstract

Keeping in shape: The shapes of gold nanocrystals determine their self-assembly behavior—rhombic dodecahedral nanocrystals form triangular multilayers (see picture), whereas cubic and octahedral nanocrystals form monolayers or multilayers without well-defined contours. The three superstructures exhibit different optical properties, and the rhombic dodecahedral gold nanocrystals display strong anisotropic SERS effects.