Invention Grant
- Patent Title: Light-activated actuator element
- Patent Title (中): 光启动元件
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Application No.: US12518862Application Date: 2007-10-22
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Publication No.: US08648206B2Publication Date: 2014-02-11
- Inventor: Masahiro Irie , Shizuka Takami
- Applicant: Masahiro Irie , Shizuka Takami
- Applicant Address: JP Fukuoka
- Assignee: Kyushu University, National University Corporation
- Current Assignee: Kyushu University, National University Corporation
- Current Assignee Address: JP Fukuoka
- Agency: Fay Sharpe LLP
- Priority: JP2006-337814 20061215
- International Application: PCT/JP2007/070525 WO 20071022
- International Announcement: WO2008/072419 WO 20080619
- Main IPC: C07D417/08
- IPC: C07D417/08

Abstract:
Disclosed is light-driven actuator element characterized in that, inter alia, it can be reduced to micrometer size, is rapidly responsive, and reversibly changes to enable repeated use. The light-driven actuator element includes a crystal of diarylethene compound which changes shape upon photoisomerization (e.g., the compound of Structural Formula (I) below, where R1 represents a hydrogen atom or methyl group and R2 represents a methyl group). The element can be a rod-shaped or plate-like microcrystal having a size on the order of micrometer. The element bends (or contracts) on irradiation with ultraviolet light and expands to return to the original size on irradiation with visible light.
Public/Granted literature
- US20100016608A1 LIGHT-ACTIVATED ACTUATOR ELEMENT Public/Granted day:2010-01-21
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