Centre for Nanochemistry, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, People's Republic of China.
ACS Nano. 2011 May 24;5(5):4000-6. doi: 10.1021/nn200566q. Epub 2011 Apr 12.
We report herein a facile electrochemical approach to synthesizing various layered composite films of nanomaterials and conducting polymers, called nanoveneers. Layered structures of polypyrrole film with single-walled carbon nanotubes (SWNTs), graphene, and Au nanoparticles have been obtained by electropolymerization of pyrrole molecules on a heavily doped silicon wafer preloaded with target conductive nanomaterials. A free-standing, transparent, and highly conductive composite film was achieved after peeling off from a silicon wafer. Different from traditional homogeneous composite materials, such kinds of nanoveneers combined to the best extent the structural continuity and processability of conducting polymers with the high conductivity and functionality of discontinuous SWNTs, graphene, and other nanomaterials. The layered electrochemical deposition provides a great freedom for constructing various nanostructures with well-controlled geometry and thus physicochemical properties, as demonstrated by SWNT/polypyrrole nanoveneers. These nanoveneers are particularly attractive in areas of chemical sensors, labels, transparent electronics, and optoelectronics.
我们在此报告了一种简便的电化学方法，用于合成各种纳米材料和导电聚合物的层状复合膜，称为纳米单板。通过在预先加载有目标导电纳米材料的重掺杂硅晶片上聚合吡咯分子，已经获得了具有单壁碳纳米管（SWNTs）、石墨烯和 Au 纳米粒子的聚吡咯膜的层状结构。从硅晶片上剥离后，得到了一种独立的、透明的、高导电的复合膜。与传统的均质复合材料不同，这种纳米单板最大限度地结合了导电聚合物的结构连续性和可加工性，以及不连续的 SWNTs、石墨烯和其他纳米材料的高导电性和功能性。分层电化学沉积为构建具有良好控制几何形状和物理化学性质的各种纳米结构提供了极大的自由度，这一点在 SWNT/聚吡咯纳米单板中得到了证明。这些纳米单板在化学传感器、标签、透明电子学和光电子学等领域具有特别的吸引力。
