Voids and yolk-shells from crystals that coat particles

Melinda Sindoro, Steve Granick

Research output: Contribution to journalArticlepeer-review


We investigate curvature-driven core-shell morphology that emerges when polycrystalline shells of ZIF-8 (zeolitic imidazolate framework coordination polymer) grow on colloid-sized particles. In early growth stages, the shell is continuous, but it transforms to yolk-shell, with neither sacrificial template nor core etching, because of geometrical frustration. A design rule is developed regarding how local surface curvature matters. Comparing shells grown on cubic, rod-like, and peanut-shaped hematite core particles, we validate the argument.

Original languageEnglish (US)
Pages (from-to)13471-13473
Number of pages3
JournalJournal of the American Chemical Society
Issue number39
StatePublished - Sep 22 2014

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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