Contact
    Start Publications Time-domain control of conductive LB films based on ...
    ←  Publication Finder
    Attension

    Time-domain control of conductive LB films based on alkylammonium-metal(dmit)2

    Year: 2002

    Journal: Colloids and Surfaces
    A: Physicochemical and Engineering Aspects 198-200 (2002) 657-661, 20111221

    Authors: M. Horikiri , Y.F. Miura , Y. Araki , K. Ikegami , M. Sugi

    Organizations: a Department of Materials Science, Faculty of Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama 225- 8502, Japan b Physical Science Division, Electrotechnical Laboratory, Tsukuba, Japan

    The conductive Langmuir-Blodgett (LB) films based on dioctadecyldimethylammonium-Au(dmit)2 salt were studied. Waiting time (Tw), which is defined as the time between the application of the salts on the water surface and the onset of the compression, was introduced as a film-forming parameter. The film quality at the air/water interface was greatly improved by changing Tw. Furthermore, the atomic force microscope (AFM) images of the LB film indicated that the film forms quasi-three-dimensional (Q-3D) structure in case Tw=5 min but the structure tends to be two-dimensional (2D) with increasing Tw. The resultant conductivity of the LB film also depends on the Tw and the highest conductivity was obtained in case Tw=90 min. The IR absorption spectra suggest that the driving force of the morphological improvement is the oxidation of the Au(dmit)2 moiety proceeding at the air/water interface before the onset of compression.