Au nanoparticles coated with chitosan

Akitoshi Tokumasu, Tomoya Inose, Noriko Yamauchi, Kouichi Nakashima, Masayuki Tokunaga, Chihiro Kato, Keiichiro Hatoyama, Takashi Kamei, Kohsuke Gonda, Yoshio Kobayashi

研究成果: Article査読

1 被引用数 (Scopus)

抄録

This paper describes a method of coating metallic gold (Au) nanoparticles with chitosan (CS) shells in an aqueous solution. A colloidal solution of Au nanoparticles with a particle size of 16.5 ± 1.7 nm was prepared by reducing the Au ions (III) with sodium citrate in water at 80 °C. CS coating was achieved in an aqueous solution containing the Au nanoparticles by using CS as a shell source and sodium hydroxide as a pH adjuster at 25 °C. Ultraviolet-visible extinction spectroscopy and transmittance electron microscopy observation revealed that the Au nanoparticles were coated with CS shells. Additionally, the CS shell thickness could be varied in a range up to 2.2 nm by changing the CS concentration during the CS-coating process. [Figure not available: see fulltext.].

本文言語English
ページ(範囲)1143-1148
ページ数6
ジャーナルColloid and Polymer Science
297
7-8
DOI
出版ステータスPublished - 2019 8 1

ASJC Scopus subject areas

  • 物理化学および理論化学
  • ポリマーおよびプラスチック
  • コロイド化学および表面化学
  • 材料化学

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