Reversible Morphology Switching of Colloidal Particles

Mingzhu Liu, Xiaolong Zheng, Fangyuan Dong, Michael D. Ward, Marcus Weck

Research output: Contribution to journalArticlepeer-review


A facile method has been discovered that enables switching of non-cross-linked poly(styrene) (Nx-PS) colloidal particle morphologies, including spherical and anisotropic convex-convex, plano-convex, and concave-convex. The anisotropic morphologies can be achieved readily from spherical Nx-PS particles through control of annealing time at elevated temperatures or surfactant concentration. These anisotropic morphologies can be reversed to spherical at lower temperatures, and reversible morphology switching between any pair of anisotropic morphologies also can be attained. This approach to particle morphology switching establishes a straightforward method for the synthesis of designer anisotropic particles using commercially available spherical particles as starting materials.

Original languageEnglish (US)
Pages (from-to)6903-6907
Number of pages5
JournalChemistry of Materials
Issue number19
StatePublished - Oct 9 2018

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry


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