Surface-mediated photoalignment of discotic liquid crystals on azobenzene polymer films

Seiichi Furumi; Masatoshi Kidowaki; Masataka Ogawa; Yosuke Nishiura; Kunihiro Ichimura

doi:10.1021/jp050106m

Surface-mediated photoalignment of discotic liquid crystals on azobenzene polymer films

Seiichi Furumi, Masatoshi Kidowaki, Masataka Ogawa, Yosuke Nishiura, Kunihiro Ichimura

Research output: Contribution to journal › Article › peer-review

36 Citations (Scopus)

Abstract

The formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film was presented. The key material for the surface-mediated photoalignment of the DLCs was poly[4-(4-cyanophenylazo)phenyl methacrylate (pMAzCN). Optical anisotropy was generated in a pMAzCN film by oblique exposure to nonpolarized light which resulted in angle-selective photoisomerization and reorientation of the azobenzenes. The results show that the three-dimensionally aligned azobenzene moieties of the pMAzCN thin film were transferred to the tilted DLC molecules at air/DLC interface.

Original language	English
Pages (from-to)	9245-9254
Number of pages	10
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	19
DOIs	https://doi.org/10.1021/jp050106m
Publication status	Published - 2005 May 19
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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abstract = "The formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film was presented. The key material for the surface-mediated photoalignment of the DLCs was poly[4-(4-cyanophenylazo)phenyl methacrylate (pMAzCN). Optical anisotropy was generated in a pMAzCN film by oblique exposure to nonpolarized light which resulted in angle-selective photoisomerization and reorientation of the azobenzenes. The results show that the three-dimensionally aligned azobenzene moieties of the pMAzCN thin film were transferred to the tilted DLC molecules at air/DLC interface.",

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T1 - Surface-mediated photoalignment of discotic liquid crystals on azobenzene polymer films

AU - Furumi, Seiichi

AU - Kidowaki, Masatoshi

AU - Ogawa, Masataka

AU - Nishiura, Yosuke

AU - Ichimura, Kunihiro

PY - 2005/5/19

Y1 - 2005/5/19

N2 - The formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film was presented. The key material for the surface-mediated photoalignment of the DLCs was poly[4-(4-cyanophenylazo)phenyl methacrylate (pMAzCN). Optical anisotropy was generated in a pMAzCN film by oblique exposure to nonpolarized light which resulted in angle-selective photoisomerization and reorientation of the azobenzenes. The results show that the three-dimensionally aligned azobenzene moieties of the pMAzCN thin film were transferred to the tilted DLC molecules at air/DLC interface.

AB - The formation of photoaligned and micropatterned discotic liquid crystal (DLC) film on the surface of photoirradiated azobenzene-containing polymer thin film was presented. The key material for the surface-mediated photoalignment of the DLCs was poly[4-(4-cyanophenylazo)phenyl methacrylate (pMAzCN). Optical anisotropy was generated in a pMAzCN film by oblique exposure to nonpolarized light which resulted in angle-selective photoisomerization and reorientation of the azobenzenes. The results show that the three-dimensionally aligned azobenzene moieties of the pMAzCN thin film were transferred to the tilted DLC molecules at air/DLC interface.

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Surface-mediated photoalignment of discotic liquid crystals on azobenzene polymer films

Abstract

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