Fabrication of double inverse opals via binary colloidal crystals of inorganic-organic core-shell particles and inorganic nanoparticles

Kenta Yamada, Daisuke Nagao, Haruyuki Ishii, Mikio Konno

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

A new type of double inverse opals (DIOs) in which a single inorganic sphere was embedded within each inorganic compartment formed by nanoparticles was fabricated via binary colloidal crystals (BCC) composed of submicron-sized core-shell spheres and the nanoparticles. In the fabrication of BCC, submicron-sized silica cores coated with a polystyrene shell and silica nanoparticles with sizes one-tenth smaller than that of core-shell particles were employed as the core-shell spheres and the nanoparticles, respectively. The BCCs fabricated were heated at 550°C for 5 h to selectively remove the polystyrene shell from the BCCs, resulting in mono-layered silica cores embedded in each hemispherical compartment without any overlayers preventing the submicron-sized cores from being optically and physically interacted with the outside. The present work provides a facile fabrication method for inorganic DIOs that will be used for new colloidal architectures.

Original languageEnglish
Pages (from-to)933-936
Number of pages4
JournalJOURNAL of CHEMICAL ENGINEERING of JAPAN
Volume48
Issue number11
DOIs
Publication statusPublished - 2015 Nov 20

Keywords

  • Colloidal crystal
  • Hollow
  • Inverse opal
  • Self-assembly

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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