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Free-standing aniline oligomer functionalized multiwalled carbon nanotube films from a filtration method

Authors

  • Qiguan Wang,

    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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  • Wei Zhou,

    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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  • Sumin Wang,

    Corresponding author
    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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  • Jianping Li,

    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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  • Wenzhi Zhang,

    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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  • Xiaomin Wang

    1. Scientific Research Innovation Team of Solidification Theory and Functional Materials, Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an, People's Republic of China
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ABSTRACT

High electrochemical active free-standing multiwalled carbon nanotube (MWNT) films have been synthesized from aniline oligomer functionalized MWNTs (MWNT-AO), by using filtration of the acidic phosphate ester (APE) doped MWNT-AO dispersions. The homogeneously distributed MWNTs endowed APE/MWNT films automatically releasing from the filter membrane. The sheet resistivity of MWNT-AO (850 Ω sq−1) showed a lower value than that of carboxyl MWNTs (1273 Ω sq−1), due to the doping effect of MWNT on aniline oligomer, confirmed by the N1s X-ray photoelectron spectrum. However, it showed a higher sheet resistivity value of 1526 Ω sq−1 after further doped by APE, because of the presence of unreacted dopant. After removing the residual insulating dopant by the vacuum filtration, the resultant APE/MWNT films showed the sheet resistivity value as low as 131 Ω sq−1. Thermogravimetric analysis showed that the MWNT loading in the film can be over than 77%, which showed the specific capacitance as high as 249 F g−1. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40259.

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