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  Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules

Kaneko, F., Kato, T., Baba, A., Shinbo, K., Kato, K., & Advincula, R. C. (2002). Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules. Colloids and Surfaces A-Physicochemical and Engineering Aspects, 198(Sp. Iss. SI), 805-810.

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 Creators:
Kaneko, F., Author
Kato, T., Author
Baba, A.1, Author              
Shinbo, K., Author
Kato, K., Author
Advincula, R. C., Author
Affiliations:
1MPI for Polymer Research, Max Planck Society, ou_1309545              

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Free keywords: surface relief grating; LC; self-assembled film; azo dye; photo-induced alignment
 Abstract: Photo-induced surface relief gratings of alternate layer-by- layer self-assembled films containing azobenzene dyes were fabricated. The alignment properties of nematic liquid crystal (LC) molecules on these films were investigated in a hybrid LC cell configuration. Poly(diallyldimethylammonium chloride) (PDADMAC) and Direct Red 80 (DR80, azobenzene dye) were deposited using the alternate layer-by-layer self-assembly method. The gratings of the PDADMAC/DR80 films were fabricated by exposure to interference patterns of Ar+ laser light at 488 rim. The formation of the gratings on the films was observed using atomic force microscopy. Furthermore, the alignment properties of LC molecules, 5CB, on the films were investigated by monitoring the change in birefringence of the LC cell in situ, This in-plane alignment was observed after similar to 30 min exposure with the laser, simultaneous with the formation of the interference patterns. (C) 2002 Elsevier Science B.V. All rights reserved.

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Language(s): eng - English
 Dates: 2002-02-18
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: No review
 Identifiers: eDoc: 28516
ISI: 000174495800097
 Degree: -

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Title: Colloids and Surfaces A-Physicochemical and Engineering Aspects
  Alternative Title : Colloid Surf. A-Physicochem. Eng. Asp.
Source Genre: Journal
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Publ. Info: -
Pages: - Volume / Issue: 198 (Sp. Iss. SI) Sequence Number: - Start / End Page: 805 - 810 Identifier: ISSN: 0927-7757