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首页> 外文期刊>Advanced Functional Materials >Mechano- and Photochromism from Bulk to Nanoscale: Data Storage on Individual Self-Assembled Ribbons
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Mechano- and Photochromism from Bulk to Nanoscale: Data Storage on Individual Self-Assembled Ribbons

机译：从散装到纳米级的机械变色和光致变色：单个自组装碳带上的数据存储

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摘要

A Pt(II) complex, bearing an oligo-ethyleneoxide pendant, is able to self-assemble in ultralong ribbons that display mechanochromism upon nanoscale mechanical stimuli, delivered through atomic force microscopy (AFM). Such observation paves the way to fine understanding and manipulation of the mechanochromic properties of such material at the nanoscale. AFM allows quantitative assessment of nanoscale mechanochromism as arising from static pressure (piezochromism) and from shear-based mechanical stimuli (tribochromism), and to compare them with bulk pressure-dependent luminescence observed with diamond-anvil cell (DAC) technique. Confocal spectral imaging reveals that mechanochromism only takes place within short distance from the localized mechanical stimulation, which allows to design high-density information writing with AFM nanolithography applied on individual self-assembled ribbons. Each ribbon hence serves as an individual microsystem for data storage. The orange luminescence of written information displays high contrast compared to cyan native luminescence; moreover, it can be selectively excited with visible light. In addition, ribbons show photochromism, i.e., the emission spectrum changes upon exposure to light, in a similar way as upon mechanical stress. Photochromism is here conveniently used to conceal and eventually erase information previously written with nanolithography by irradiation.
机译：带有低级环氧乙烷侧基的Pt（II）络合物能够自组装成超长的条带，通过原子力显微镜（AFM）传递纳米级的机械刺激后会显示出机械致变色。这样的观察为在纳米级上更好地理解和操纵这种材料的机械变色特性铺平了道路。 AFM可以定量评估由静压（压电致变色）和基于剪切的机械刺激（摩擦致变色）引起的纳米级机械致变色，并将它们与金刚石-砧座细胞（DAC）技术观察到的与体压相关的发光进行比较。共聚焦光谱成像表明，机械致变色仅发生在距局部机械刺激很短的距离之内，这允许使用应用于单个自组装碳带的AFM纳米光刻设计高密度信息写入。因此，每个功能区都充当用于数据存储的单独的微系统。与青色的自然发光相比，书面信息的橙色发光显示出高对比度。此外，它可以被可见光选择性地激发。另外，带显示出光致变色，即，发射光谱在暴露于光时以与在机械应力下相似的方式改变。光致变色在此方便地用于隐藏和最终擦除先前通过辐照用纳米光刻技术写入的信息。

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  • 来源
    《Advanced Functional Materials》 |2016年第29期|5271-5278|共8页
  • 作者

    Genovese Damiano; Aliprandi Alessandro; Prasetyanto Eko A.; Mauro Matteo; Hirtz Michael; Fuchs Harald; Fujita Yasuhiko; Uji- Hiroshi I; Lebedkin Sergei; Kappes Manfred; De Cola Luisa;

  • 作者单位

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany;

    Univ Strasbourg, Lab Chim & Biomat Supramol, ISIS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|Univ Strasbourg, IcFRC, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|CNRS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France;

    Univ Strasbourg, Lab Chim & Biomat Supramol, ISIS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|Univ Strasbourg, IcFRC, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|CNRS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France;

    Univ Strasbourg, Lab Chim & Biomat Supramol, ISIS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|Univ Strasbourg, IcFRC, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|CNRS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|USIAS, 5 Allee Gen Rouvillois, F-67083 Strasbourg, France;

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany;

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany;

    Katholieke Univ Leuven, Dept Chem, Div Mol Imaging & Photon, Celestijnenlaan 200G-F, B-3001 Heverlee, Belgium;

    Katholieke Univ Leuven, Dept Chem, Div Mol Imaging & Photon, Celestijnenlaan 200G-F, B-3001 Heverlee, Belgium;

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany;

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany;

    Karlsruhe Inst Technol, Inst Nanotechnol, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|KNMF, Hermann von Helmholtz Pl 1D, D-76344 Eggenstein Leopoldshafen, Germany|Univ Strasbourg, Lab Chim & Biomat Supramol, ISIS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|Univ Strasbourg, IcFRC, 8 Allee Gaspard Monge, F-67000 Strasbourg, France|CNRS, 8 Allee Gaspard Monge, F-67000 Strasbourg, France;

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