Photoresponsive behavior and photochemical phase transition of amphiphilic diblock liquid-crystalline copolymer

Haifeng Yu; Tomokazu Iyoda; Kunihiko Okano; Atsushi Shishido; Tomiki Ikeda

doi:10.1080/15421400500253688

Photoresponsive behavior and photochemical phase transition of amphiphilic diblock liquid-crystalline copolymer

Haifeng Yu, Tomokazu Iyoda, Kunihiko Okano, Atsushi Shishido, Tomiki Ikeda

Department of Applied Chemistry

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

15 Citations (Scopus)

Abstract

The photoresponsive behavior of an amphiphilic diblock liquid-crystalline (LC) copolymer (P40A37) was studied in both toluene solution and spin-coated film. The LC copolymer in a film state showed slower response and relaxation than that in the solution. Significant H-aggregation in the film led to a blue shift by 16 nm at the maximum absorption. The photochemical phase transition was observed with a polarizing optical microscope (POM) upon exposure to 366-nm light. The photoinduced isotropic state remained stable at room temperature, indicating the potential application for 2-D and 3-D storage.

Original language	English
Pages (from-to)	191-199
Number of pages	9
Journal	Molecular Crystals and Liquid Crystals
Volume	443
DOIs	https://doi.org/10.1080/15421400500253688
Publication status	Published - 2005 Dec 1

Keywords

Amphiphilic liquid-crystalline diblock copolymer
Azobenzene
Liquid-crystalline polymer
Photochemical phase transition
Photosensitive polymers

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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abstract = "The photoresponsive behavior of an amphiphilic diblock liquid-crystalline (LC) copolymer (P40A37) was studied in both toluene solution and spin-coated film. The LC copolymer in a film state showed slower response and relaxation than that in the solution. Significant H-aggregation in the film led to a blue shift by 16 nm at the maximum absorption. The photochemical phase transition was observed with a polarizing optical microscope (POM) upon exposure to 366-nm light. The photoinduced isotropic state remained stable at room temperature, indicating the potential application for 2-D and 3-D storage.",

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AU - Iyoda, Tomokazu

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AU - Shishido, Atsushi

AU - Ikeda, Tomiki

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N2 - The photoresponsive behavior of an amphiphilic diblock liquid-crystalline (LC) copolymer (P40A37) was studied in both toluene solution and spin-coated film. The LC copolymer in a film state showed slower response and relaxation than that in the solution. Significant H-aggregation in the film led to a blue shift by 16 nm at the maximum absorption. The photochemical phase transition was observed with a polarizing optical microscope (POM) upon exposure to 366-nm light. The photoinduced isotropic state remained stable at room temperature, indicating the potential application for 2-D and 3-D storage.

AB - The photoresponsive behavior of an amphiphilic diblock liquid-crystalline (LC) copolymer (P40A37) was studied in both toluene solution and spin-coated film. The LC copolymer in a film state showed slower response and relaxation than that in the solution. Significant H-aggregation in the film led to a blue shift by 16 nm at the maximum absorption. The photochemical phase transition was observed with a polarizing optical microscope (POM) upon exposure to 366-nm light. The photoinduced isotropic state remained stable at room temperature, indicating the potential application for 2-D and 3-D storage.

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KW - Photochemical phase transition

KW - Photosensitive polymers

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