Abstract
The photo-induced in-plane alignment of nematic liquid crystal (LC) molecules, 5CB, has been investigated in a cell prepared with alternate layer-by-layer self-assembly of polyelectrolyte and low-molecular weight azobenzene dye films on gold electrodes using the attenuated total reflection (ATR) measurement method. The ATR properties due to excitation of surface plasmon polaritons were observed in the LC cell. They sensitively changed with irradiation of linearly polarized visible light. The experimental results corresponded well with the calculated ATR curves at different polarization states. We have demonstrated that in-plane alignment of the LC molecules on the self-assembled films could also be controlled by the polarization direction of irradiated visible light on the LC cell.
| Original language | English |
|---|---|
| Pages (from-to) | 917-922 |
| 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
- Attenuated total reflection
- Azo dye
- Layer-by-layer self-assembled film
- LC molecule
- Photo-induced alignment
ASJC Scopus subject areas
- Colloid and Surface Chemistry
Cite this
Photo-induced in-plane alignment of LC molecules on layer-by-layer self-assembled films containing azo dyes evaluated by attenuated total reflection measurements. / Ishikawa, Jun; Baba, Akira; Kaneko, Futao; Shinbo, Kazunari; Kato, Keizo; Advincula, Rigoberto C.
In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 198-200, 18.02.2002, p. 917-922.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Photo-induced in-plane alignment of LC molecules on layer-by-layer self-assembled films containing azo dyes evaluated by attenuated total reflection measurements
AU - Ishikawa, Jun
AU - Baba, Akira
AU - Kaneko, Futao
AU - Shinbo, Kazunari
AU - Kato, Keizo
AU - Advincula, Rigoberto C.
PY - 2002/2/18
Y1 - 2002/2/18
N2 - The photo-induced in-plane alignment of nematic liquid crystal (LC) molecules, 5CB, has been investigated in a cell prepared with alternate layer-by-layer self-assembly of polyelectrolyte and low-molecular weight azobenzene dye films on gold electrodes using the attenuated total reflection (ATR) measurement method. The ATR properties due to excitation of surface plasmon polaritons were observed in the LC cell. They sensitively changed with irradiation of linearly polarized visible light. The experimental results corresponded well with the calculated ATR curves at different polarization states. We have demonstrated that in-plane alignment of the LC molecules on the self-assembled films could also be controlled by the polarization direction of irradiated visible light on the LC cell.
AB - The photo-induced in-plane alignment of nematic liquid crystal (LC) molecules, 5CB, has been investigated in a cell prepared with alternate layer-by-layer self-assembly of polyelectrolyte and low-molecular weight azobenzene dye films on gold electrodes using the attenuated total reflection (ATR) measurement method. The ATR properties due to excitation of surface plasmon polaritons were observed in the LC cell. They sensitively changed with irradiation of linearly polarized visible light. The experimental results corresponded well with the calculated ATR curves at different polarization states. We have demonstrated that in-plane alignment of the LC molecules on the self-assembled films could also be controlled by the polarization direction of irradiated visible light on the LC cell.
KW - Attenuated total reflection
KW - Azo dye
KW - Layer-by-layer self-assembled film
KW - LC molecule
KW - Photo-induced alignment
UR - http://www.scopus.com/inward/record.url?scp=18244416173&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=18244416173&partnerID=8YFLogxK
U2 - 10.1016/S0927-7757(01)01020-2
DO - 10.1016/S0927-7757(01)01020-2
M3 - Article
AN - SCOPUS:18244416173
VL - 198-200
SP - 917
EP - 922
JO - Colloids and Surfaces A: Physicochemical and Engineering Aspects
JF - Colloids and Surfaces A: Physicochemical and Engineering Aspects
SN - 0927-7757
ER -