Stable Aqueous Dispersion of Reduced Graphene Nanosheets via Non-Covalent Functionalization with Conducting Polymers and Application in Transparent Electrodes

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• 作者：Kiyoung Jo ; Taemin Lee ; Hyun Jung Choi ; Ju Hyun Park ; Dong Jun Lee ; Dong Wook Lee ; Byeong-Su Kim
• 刊名：Langmuir
• 出版年：2011
• 出版时间：March 1, 2011
• 年：2011
• 卷：27
• 期：5
• 页码：2014-2018
• 全文大小：840K
• 年卷期：v.27,no.5(March 1, 2011)
• ISSN：1520-5827

文摘

We developed a simple and facile method of producing a stable aqueous suspension of reduced graphene oxide (RGO) nanosheets through the chemical reduction of graphene oxide in the presence of a conducting polymer dispersant, poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). This approach involves the cooperative interactions of strong 蟺鈭?蟺 interactions between a two-dimensional graphene sheet and a rigid backbone of PEDOT and the intermolecular electrostatic repulsions between negatively charged PSS bound on the RGO sheets, which impart the colloidal stability of the resulting hybrid nanocomposite of RGO/PEDOT. Moreover, our one-step solution-based method allows preserving the intrinsic chemical and electronic properties of both components, yielding a hybrid film of RGO nanosheets of high conductivity of 2.3 k惟/sq with a transmittance of 80%. By taking advantage of conducting network structure of conducting polymers which provides an additional flexibility and mechanical stability of RGO nanosheets, we demonstrate the potential application of hybrid RGO/PEDOT as highly flexible and transparent electrodes.