Preparation of size-controlled monodisperse colloidal mesoporous silica nanoparticles and fabrication of colloidal crystals

Eisuke Yamamoto, Masaki Kitahara, Takuya Tsumura, Kazuyuki Kuroda*

*この研究の対応する著者

研究成果: Article査読

53 被引用数 (Scopus)

抄録

Although mesoporous silica particles are useful building blocks for colloidal crystals, mesoporous silica nanoparticles smaller than 100 nm with sufficient monodispersity and colloidal stability to enable thermodynamic assemblies have not been reported. Here, we report that highly monodisperse colloidal mesoporous silica nanoparticles (CMS) can be prepared by combining the preparation of colloidal mesoporous silica nanoparticles with a shortened nucleation time. The nanoparticles exhibited a uniform shape and relatively smooth surface because an undesirable aggregate dispersion process was avoided. In addition, the diameter of the nanoparticles was controlled by seed-growth without spontaneous nucleation, which enabled the investigation of fundamental CMS properties. Using monodisperse CMS, the dependence of the ζ-potential of CMS on the diameter was revealed. Colloidal crystals composed of mesoporous silica nanoparticles were fabricated by drying the colloidal solution. This is the first report regarding the fabrication of colloidal crystals composed of mesoporous silica nanoparticles with a small particle size.

本文言語English
ページ(範囲)2927-2933
ページ数7
ジャーナルChemistry of Materials
26
9
DOI
出版ステータスPublished - 2014 5月 13

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)
  • 材料化学

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