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Keywords:

  • azo compounds;
  • cage compounds;
  • isomerization;
  • nanostructures;
  • self-assembly
Thumbnail image of graphical abstract

Synergy effect: A discrete highly cationic spherical Pd12L24 complex was prepared that concentrates 24 photoresponsive azobenzene units internally (see picture; shell blue, N dark blue, Pd yellow, O red, C gray, H white; azobenzene units shown as CPK models). The concentrated azobenzenes provide a hydrophobic environment in the sphere, and the degree of hydrophobicity is reversibly changed by the isomerization of the azobenzenes.