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

eXPRESS Polymer Letters

M-H. Tsai¹ 

关键词: polymer composites;    electroactive polymer;    electrochemical sensing;   

DOI  :  10.3144/expresspolymlett.2018.6

学科分类：生物科学（综合）

来源: eXPRESS Polymer Letters

【 摘 要 】

A novel gold/aniline-pentamer-based electroactive polyamide (Au/EPA) composites that can modify carbon pasteelectrodes (CPEs) for ascorbic acid (AA) sensing has been studied in detail in this article. Cyclic voltammetry studies indicatedimproved electrochemical properties of the Au/EPA composites, demonstrating the occurrence of efficient electron/charge transfer between the Au and the EPA. Experimental tests shows that there is a linear relationship between the concentrationof added AA and the response current for the CPE modified with Au/EPA sensor to the concentration of AA in therange of 0.05–0.75 mM (R2 = 0.996, n = 15). The detection limit and the sensitivity of the Au/EPA-CPE AA sensors were2.75 μM at a signal to noise ratio (S/N) of 3, and 21.7 mA·mM–1, respectively.

【 授权许可】

CC BY