Oriented nanocrystal mosaic in monodispersed CaCO 3 microspheres with functional organic molecules

Hiroaki Imai, Natsuki Tochimoto, Yuichi Nishino, Yoko Takezawa, Yuya Oaki

研究成果: Article査読

35 被引用数 (Scopus)

抄録

Monodispersed microspheres of vaterite CaCO 3 with a diameter adjusted to the range of 1-10 μm were produced through an amorphous intermediate with polystyrene sulfate. Whereas the microspheres were composed of nanocrystals with a diameter of ca. 20 nm covered with the organic polymer, the crystallographic direction of the entire sphere was evaluated to be macroscopically uniform from its single-crystalline features on polarization anisotropy and morphological evolution into a hexagonal shape with an additional growth process. A particular mosaic with a radially grown backbone structure consisting of oriented nanocrystals was suggested to exist in the microspheres from the electron diffraction patterns. The rigid mosaic framework was covered with a flexible organic component. Thus, various functional organic molecules including hydrophilic and hydrophobic dyes were successfully introduced into the microspheres due to the amphiphilic nature of the organic phase.

本文言語English
ページ(範囲)876-882
ページ数7
ジャーナルCrystal Growth and Design
12
2
DOI
出版ステータスPublished - 2012 2 1

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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