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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.116  No.1351 (March) (2008)  >  pp.361-368

Journal of the Ceramic Society of Japan
<<Previous article Vol.116  No.1351 (March) (2008)   pp.361 - 368 Next article>>

Surface-mediated photoalignment of organic/inorganic nanohybrids

Takahiro SEKI1), Haruhiko FUKUMOTO1), Mitsuo HARA1), Nobuhiro KAWATSUKI2) and Shusaku NAGANO1)
1) Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
2) Department of Materials Science and Chemistry, Graduate School of Engineering, University of Hyogo


  Light irradiation provides significant tools for material structuring and processing. In this article, the photo-orientation processes of the organic/inorganic hybrid materials recently achieved in our laboratory are briefly introduced. Irradiation of linearly polarized light to a polymer film containing a photoisomerizabke azobenzene or photocrosslinkable cinnamoyl unit leads to the induction of anisotropic molecular orientations on the surface. This molecular anisotropic surface structure can be transferred to a controlled orientation of nanostructures of organic/inorganic hybrid films at macroscopic scales. Two classes of lyotropic/silica systems have been applied to the photo-orientation procedures, i.e., ordinary surfactant systems and chromonic ones. These processes can be regarded as the extended applications of the so-called command surface systems, which photochemically regulate the molecular orientations of liquid crystals.



Keyword:
Organic/Inorganic hybrids, Photoalignment, Azobenzene, Cinnamate, Liquid crystals, Choromonics

Received: November 05, 2007
Accepted: December 11, 2007 , Published online: March 01, 2008
Copyright (c) 2008 The Ceramic Society of Japan

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