Near-field optical microscope observation of dye-containing nano-domains

Authors

  • N. Yamamoto,

    Corresponding author
    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
      Dr Noritaka Yamamoto. Tel.: +81 727 51 8613; fax: +81 727 51 9637; e-mail: noritaka.yamamoto@aist.go.jp
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  • T. Mizokuro,

    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
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  • H. Mochizuki,

    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
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  • S. Horiuchi,

    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
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  • T. Hayakawa,

    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
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  • T. Hiraga

    1. National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan
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Dr Noritaka Yamamoto. Tel.: +81 727 51 8613; fax: +81 727 51 9637; e-mail: noritaka.yamamoto@aist.go.jp

Summary

A novel method for forming dye-containing nano-domains in thin films using a polymer alloy system has been developed. The polymer alloy system (PS-b-PMMA), which consists of polystyrene (PS) and polymethyl methacrylate (PMMA), forms microphase separation in thin films. The film was treated using a previously reported technique under vacuum conditions, and an organic dye was selectively dispersed into the PS. Selective association of the dye (diarylethene; cis-1, 2-dicyano-1, 2-bis (2,4,5-trimethyl-3-thienyl) ethene) with the PS nano-domains was then observed, with both transmission electron microscopy and scanning near-field optical microscopy with an absorption spectrum.

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