2D Confined-Space Assisted Growth of Molecular-Level-Thick Polypyrrole Sheets with High Conductivity and Transparency

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• 作者：Yang Yang ; Dong Wang ; Yongjin Wu ; Xiaorui Tian ; Haili Qin ; Liang Hu ; Ting Zhang ; Weihai Ni and Jian Jin
• 关键词：2D confined reactions ; conducting polymers ; polypyrrole nanosheets ; ultrathin 2D nanomaterials
• 刊名：Macromolecular Rapid Communications
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：37
• 期：7
• 页码：590-596
• 全文大小：4495K
• ISSN：1521-3927

文摘

Herein, the use of a 2D soft template system composed of hundred-nanometer-thick water/ethanol mixed layers sandwiched by lamellar bilayer membranes of a self-assembled amphiphilic molecule to produce ultrathin polyprrole (PPy) with a uniform thickness as thin as 3.8 nm and with large dimensions (>2 μm²) is presented. The obtained PPy nanosheets exhibit regioregularity with ordered chain alignment where the polymer chains in the nanosheets produced are well aligned with a clear interchain spacing as confirmed by small-angle X-ray scattering measurement. The molecular-level-thick PPy nanosheets exhibit extremely high conductivity up to 1330 S m⁻¹, thanks to the ordered alignment of polymer chains in the nanosheets, and a high transparency in both the visible region (transmittance >99%) and near-infrared region (transmittance >93%).