Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

• DOI: 10.3144/expresspolymlett.2018.6
• Publication Date: 2017-11-02T05:28:53Z
• Authors: M-H. Tsai; S. H. Lu; Y. H. Lai; G-H. Lai; G. V. Dizon; T-I Yang; Y-J. Lin; Y. C. Chou
• Keywords: Pentamer

A novel gold/aniline-pentamer-based electroactive polyamide (Au/EPA) composites that can modify carbon paste electrodes (CPEs) for ascorbic acid (AA) sensing has been studied in detail this article.Cyclic voltammetry studies indicated improved electrochemical properties of the Au/EPA composites, demonstrating occurrence efficient electron/ charge transfer between Au and EPA.Experimental tests shows there is a linear relationship concentration added AA response current CPE modified with sensor to range 0.05-0.75mM (R 2 = 0.996, n 15).The detection limit sensitivity Au/EPA-CPE sensors were 2.75 μM at signal noise ratio (S/N) 3, 21.7 mA•mM -1 , respectively.