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 nm. 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 ∼30 min exposure with the laser, simultaneous with the formation of the interference patterns.
| Original language | English |
|---|---|
| Pages (from-to) | 805-810 |
| Number of pages | 6 |
| Journal | Colloids and Surfaces A: Physicochemical and Engineering Aspects |
| Volume | 198-200 |
| DOIs | |
| Publication status | Published - 2002 Feb 18 |
| Externally published | Yes |
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Keywords
- Azo dye
- LC
- Photo-induced alignment
- Self-assembled film
- Surface relief grating
ASJC Scopus subject areas
- Colloid and Surface Chemistry
Cite this
Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules. / Kaneko, Futao; Kato, Takashi; Baba, Akira; Shinbo, Kazunari; Kato, Keizo; Advincula, Rigoberto C.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 198-200, 18.02.2002, p. 805-810.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photo-induced fabrication of surface relief gratings in alternate self-assembled films containing azo dye and alignments of LC molecules
AU - Kaneko, Futao
AU - Kato, Takashi
AU - Baba, Akira
AU - Shinbo, Kazunari
AU - Kato, Keizo
AU - Advincula, Rigoberto C.
PY - 2002/2/18
Y1 - 2002/2/18
N2 - 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 nm. 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 ∼30 min exposure with the laser, simultaneous with the formation of the interference patterns.
AB - 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 nm. 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 ∼30 min exposure with the laser, simultaneous with the formation of the interference patterns.
KW - Azo dye
KW - LC
KW - Photo-induced alignment
KW - Self-assembled film
KW - Surface relief grating
UR - http://www.scopus.com/inward/record.url?scp=0037128073&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037128073&partnerID=8YFLogxK
U2 - 10.1016/S0927-7757(01)01005-6
DO - 10.1016/S0927-7757(01)01005-6
M3 - Article
VL - 198-200
SP - 805
EP - 810
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -