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

Yasuhiro Nakai, Kazue Kurihara

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)869-872
Number of pages4
JournalStudies in Surface Science and Catalysis
Volume132
Publication statusPublished - 2001 Jan 1

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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