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Photo-Induced Properties of Liquid Crystal Molecules on Alternately Assembled Charged Azobenzene Dyes and Polyelectrolyte Films Using Attenuated Total Reflection Method

Published online by Cambridge University Press:  21 March 2011

Akira Baba ,
Takashi Kato ,
Jun Ishikawa ,
Futao Kaneko ,
Kazunari Shinbo ,
Keizo Kato  and
Rigoberto Advincula
Akira Baba
Affiliation:
Niigata University, Department of Electrical and Electronic Eng., Niigata 950-2181, JAPAN
Takashi Kato
Affiliation:
Niigata University, Graduate School of Science and Technology, Niigata 950-2181, JAPAN
Jun Ishikawa
Affiliation:
Niigata University, Graduate School of Science and Technology, Niigata 950-2181, JAPAN
Futao Kaneko
Affiliation:
Niigata University, Department of Electrical and Electronic Eng., Niigata 950-2181, JAPAN
Kazunari Shinbo
Affiliation:
Niigata University, Department of Electrical and Electronic Eng., Niigata 950-2181, JAPAN
Keizo Kato
Affiliation:
Niigata University, Graduate School of Science and Technology, Niigata 950-2181, JAPAN
Rigoberto Advincula
Affiliation:
University of Alabama at Birmingham, Department of Chemistry, Birmingham, AL 35294-1240
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Abstract

In this report, we describe the photo-induced in-plane alignment of nematic liquid crystal (LC) molecules, 5CB, in a hybrid cell with alternate self-assembled films of low-molecular weight azobenzene dye and polyelectrolyte on gold electrodes using the attenuated total reflection (ATR) measurement method. The molecular self-assembly process was also investigated by the ATR method. Reflectivities due to excitations of the surface plasmon polariton (SPP) were observed in the ATR properties of the LC cell. In-plane switching of the LC molecules adjacent to the aligning layer was evaluated from the ATR curves after irradiation of linearly polarized visible light to the LC cell. The sensitivity of the ATR method gives information on the alignment, tilt angle, and extent of LC reorientation in the bulk. Thus, the importance of using the molecular self-assembly processes of individual polyion-dye pairs for fabrication of new photo-aligning layers is emphasized.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 598: Symposium BB – Electrical, Optical, & Magenetic Properties...V , 1999 , BB11.4
Copyright
Copyright © Materials Research Society 1999

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