One-Pot Synthesis and Processing of Transparent, Conducting, and Freestanding Carbon Nanotubes/Polyaniline Composite Films

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• 作者：Rodrigo V. Salvatierra ; Marcela M. Oliveira ; Aldo J. G. Zarbin
• 刊名：Chemistry of Materials
• 出版年：2010
• 出版时间：September 28, 2010
• 年：2010
• 卷：22
• 期：18
• 页码：5222-5234
• 全文大小：1305K
• 年卷期：v.22,no.18(September 28, 2010)
• ISSN：1520-5002

文摘

In this work, we report for the first time, the synthesis of several carbon nanotube (CNT)/polyaniline (PANI) nanocomposites obtained through interfacial polymerization, in which the resulting material is obtained directly as a transparent and freestanding film at the water−toluene interface. The films are obtained spontaneously with high stability and can be easily transferred with high optical quality to any kind of substrate or directly to a desirable device. Samples containing several CNT/PANI ratios have been prepared. The characterization of the resulting materials was carried out by FT-IR, UV−vis-NIR, and Raman spectroscopy, X-ray diffraction, cyclic voltammetry, scanning and transmission electron microscopy, and conductivity measurements. The results indicate that the polymerization of aniline starts at the carbon nanotube walls, resulting in polymer-coated CNTs. A π−π interaction between the CNTs and the PANI is proposed. The formation of the self-standing films is discussed in terms of the stabilization of the water−toluene interface.