Selective Metal Deposition on Photoswitchable Molecular Surfaces

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• 作者：Tsuyoshi Tsujioka ; Yusuke Sesumi ; Rie Takagi ; Kyoko Masui ; Satoshi Yokojima ; Kingo Uchida ; Shinichiro Nakamura
• 刊名：Journal of the American Chemical Society
• 出版年：2008
• 出版时间：August 13, 2008
• 年：2008
• 卷：130
• 期：32
• 页码：10740-10747
• 全文大小：499K
• 年卷期：v.130,no.32(August 13, 2008)
• ISSN：1520-5126

文摘

We report here a novel phenomenon: selective metal deposition on photoswitchable diarylethene (DAE) surfaces. Magnesium vapor was deposited by vacuum evaporation on the colored DAE but not on the uncolored surface. The selective deposition originates in the change of the glass transition temperature of the amorphous DAE film resulting from photoisomerization and therefore from changes of surface molecular motion. We clarified that Mg atoms on the uncolored surface actively migrated on the surface and were desorbed from the surface. The possibility of depositing other metals is also discussed. Light-controllable metal-integrated deposition was demonstrated as a new function of the photoswitchable molecular surfaces. This study reveals new features of the photoswitchable molecular surfaces, and their potential suggests bright prospects for future applications in organic electronics.