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Keywords:

  • Colloids;
  • Gels, colloidal;
  • Metallopolymers;
  • Photonic crystals;
  • Polychromism;
  • Redox activity

A broadly wavelength tunable polyferrocenylsilane–silica composite photonic crystal with a fast response is presented. Polychromic variation in the reflection wavelength is effected via the swelling by solvent of a crosslinked redox-active metallopolymer gel network incorporated in the voids of a planarized silica colloidal crystal film. The Figure demonstrates the fast mechanical response of the composite photonic crystals.