Near-field optical microscope observation of dye-containing nano-domains.
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.
Yamamoto
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N
National Research Institute of Advanced Industrial Science and Technology, 1-8-31Midorigaoka, Ikeda, Osaka 563-8577, Japan. noritaka.yamamoto@aist.go.jp
Mizokuro
T
T
Mochizuki
H
H
Horiuchi
S
S
Hayakawa
T
T
Hiraga
T
T