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Polymer Brush Electrets

机译：聚合物刷式驻极体

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摘要

The charge storage properties of polymer brushes are reported for the first time. Poly(methyl methacrylate) (PMMA) brushes are explored as electrets to store electrostatic charges. Micrometer- and nanometer-scale patterns of electrostatic charges are successfully fabricated on planar and non-planar PMMA brush films by means of conductive microcontact printing and atomic force microscope lithography, where the charge storage density and stability are studied in detail with Kelvin force microscopy. Importantly, because PMMA brushes are chemically tethered on the substrate, their charge storage properties can be studied in various organic solvents, in which their bulk counterparts will be dissolved. It is found that patterned charges on PMMA brushes are stable enough in organic media, such as hexane and toluene, for guiding the assembly of Au nanoparticles in organic media and the dewetting of polymer thin films with solvent annealing. The electrets properties shall add a new dimension of functionality, apart from the conventional chemical and physical properties, to polymer brushes for a wide range of applications in materials science, nanotechnology, and electronic devices.
机译：首次报道了聚合物刷的电荷存储性能。聚甲基丙烯酸甲酯（PMMA）电刷被用作驻极体来存储静电荷。通过导电微接触印刷和原子力显微镜光刻技术，在平面和非平面的PMMA刷膜上成功地制得了微米级和纳米级的静电荷图案，其中用开尔文力显微镜详细研究了电荷存储密度和稳定性。重要的是，由于PMMA刷是通过化学方式束缚在基材上的，因此可以在各种有机溶剂中研究其电荷存储特性，在这些有机溶剂中，其大部分对应物将被溶解。已经发现，PMMA刷上的图案化电荷在有机介质（例如己烷和甲苯）中足够稳定，可用于引导Au纳米粒子在有机介质中的组装以及通过溶剂退火对聚合物薄膜进行去湿。除了传统的化学和物理特性外，驻极体特性还应为聚合物刷增加新的功能范围，以在材料科学，纳米技术和电子设备中广泛应用。

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  • 来源
    《Advanced Functional Materials》 |2013年第25期|3239-3246|共8页
  • 作者

    Xinlei Ma; Zhuang Xie; Zhilu Liu; Xuqing Liu; Tingbing Cao; Zijian Zheng;

  • 作者单位

    Department of Chemistry Renmin University of China Beijing 100872, China,Nanotechnology Center Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kong SAR, China;

    Nanotechnology Center Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kong SAR, China,Advanced Research Centre for Fashion and Textiles The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518000, China;

    Nanotechnology Center Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kong SAR, China,Advanced Research Centre for Fashion and Textiles The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518000, China;

    Nanotechnology Center Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kong SAR, China;

    Department of Chemistry Renmin University of China Beijing 100872, China;

    Nanotechnology Center Institute of Textiles and Clothing The Hong Kong Polytechnic University Hung Horn, Kowloon, Hong Kong SAR, China,Advanced Research Centre for Fashion and Textiles The Hong Kong Polytechnic University Shenzhen Research Institute Shenzhen 518000, China;

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