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

被引：14

作者：

Yu, HF ^{[1
]}

Iyoda, T ^{[1
]}

Okano, K ^{[1
]}

Shishido, A ^{[1
]}

Ikeda, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan

来源：

MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2005年 / 443卷

关键词：

amphiphilic liquid-crystalline diblock copolymer; azobenzene; liquid-crystalline polymer; photochemical phase transition; photosensitive polymers;

D O I：

10.1080/15421400500253688

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：191 / 199

页数：9

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