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Wang Q.,Scientific Research Innovation Team of Solidification Theory and Functional MaterialsShaanxi Key Laboratory of Photoelectric Functional Materials and Devices | Zhao R.,Scientific Research Innovation Team of Solidification Theory and Functional MaterialsShaanxi Key Laboratory of Photoelectric Functional Materials and Devices | Wang S.,Scientific Research Innovation Team of Solidification Theory and Functional MaterialsShaanxi Key Laboratory of Photoelectric Functional Materials and Devices | Guo H.,Scientific Research Innovation Team of Solidification Theory and Functional MaterialsShaanxi Key Laboratory of Photoelectric Functional Materials and Devices | And 6 more authors.
Journal of Applied Polymer Science | Year: 2016

An uniformly distributed film consisting of polyaniline (PANI) nanoparticles and carboxylic acid functionalized multiwalled carbon nanotubes (MWNTs-COOH) was successfully assembled on ITO plates from a layer-by-layer (LBL) method by using electrostatic interactions as the main driving force. The good conjugation between PANI nanoparticles and MWNTs-COOH resulted in significant electrochemical performance variation of the obtained films. In addition, the assembled MWNT-COOH/PANI/ITO showed synergistic effect to the electrochemical oxidation of nifedipine (NIF) when used as a sensor. Compared with bare ITO, the oxidation potential of NIF can be decreased about 170 mV on MWNT-COOH/PANI/ITO, and the lower detection limit of NIF was as low as 1.0 × 10-6 mol/L. In addition, the assembled electrode gave no responses to interferences such as glucose, urea, ascorbic acid, and trisodium citrate, which showed high selectivity for recognition and quantification of NIF. © 2016 Wiley Periodicals, Inc.

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