Magnetically induced orientation of mesochannels in mesoporous silica films at 30 Tesla

Yusuke Yamauchi*, Makoto Sawada, Masaki Komatsu, Atsushi Sugiyama, Tetsuya Osaka, Noriyuki Hirota, Yoshio Sakka, Kazuyuki Kuroda

*この研究の対応する著者

研究成果: Article査読

50 被引用数 (Scopus)

抄録

We demonstrate the magnetically induced orientation of mesochannels in mesoporous silica films prepared with low-molecular-weight surfactants under an extremely high magnetic field of 30 T. This process is principally applicable to any type of surfactant that has magnetic anisotropy because such a high magnetic field provides sufficient magnetic energy for smooth magnetic orientation. Hexadecyltrimethylammonium bromide (CTAB) and polyoxyethylene-10- cetyl ether (Brij 56) were used as cationic and nonionic surfactants, respectively. According to XRD and cross-sectional TEM, mesochannels aligned perpendicular to the substrates were observed in films prepared with low-molecular-weight surfactants, although the effect was incomplete. The evolution of these types of films should lead to future applications such as highly sensitive chemical sensors and selective separation.

本文言語English
ページ(範囲)1505-1512
ページ数8
ジャーナルChemistry - An Asian Journal
2
12
DOI
出版ステータスPublished - 2007

ASJC Scopus subject areas

  • 生化学
  • 有機化学

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