Photoinduced long-range attraction between spiropyran monolayers studied by surface forces measurement

Yasuhiro Nakai, Kazue Kurihara

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Photoinduced changes in surface interactions were studied using surface forces measurement. Surfaces were modified by the Langmuir-Blodgett (LB) deposition of a mixed monolayer of a spiropyran derivative (SP1822) and n-octadecane (C18). The LB film exhibited a reversible change in its structure between the SP form (neutral closed form) and the PMC form (zwitterionic open form) upon irradiation by light at specific wavelengths, which were confirmed by UV-VIS spectroscopy. A long-range attraction extending to ca. 100 mn was observed for the surfaces containing the PMC forms, while an interaction between the SP forms was repulsive in the long-range and attractive at distances less than 20 nm.

本文言語English
ページ(範囲)869-872
ページ数4
ジャーナルStudies in Surface Science and Catalysis
132
出版ステータスPublished - 2001 1 1

ASJC Scopus subject areas

  • 触媒
  • 凝縮系物理学
  • 物理化学および理論化学
  • 表面、皮膜および薄膜
  • 材料化学

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