One step electrosynthesis of conjugated polymers thin film for Fe3+ detection and its potential application

SENSORS AND ACTUATORS B-CHEMICAL

卷:237

Article

Ding, Wanchuan^1,2  Zhang, Ge^1,2  Zhang, Hui^1,2  Xu, Jingkun¹  Wen, Yangping²  Zhang, Jie^1,2 

[1] Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China

[2] Jiangxi Agr Univ, Key Lab Appl Chem, Nanchang 330045, Peoples R China

关键词: Conjugated polymers;    Fluorescence sensors;    Fe3+ detection;    One step electrosynthesis;    Thin films;   

DOI  :  10.1016/j.snb.2016.06.082

来源: Elsevier

【 摘 要 】

Poly(9-fluorenecarboxylic acid) (PFCA) thin film was successfully fabricated onto the surface of indium tin oxide glass by one-step electropolymerization of commercially available 9-fluorenecarboxylic acid in boron trifluoride diethyl etherate. Meanwhile, PFCA thin film could specifically recognize Fe3+. Fe3+ was generated by the oxidization of Fe2+ in the presence of H2O2 that was produced by biochemical reactions and resulted in fluorescence quenching of PFCA thin film. Furthermore, a sensing platform was designed for highly selective fluorescent detection of glucose. The qualitative and quantitative analysis of Fe3+, H2O2 and glucose with detection limits of 1 mu M, 2.9 mu M and 3.4 mu M respectively could be implemented by a simple, cost-effective, reusable, practical and multi-functional PFCA thin film. The fabricated PFCA-based chemo/bio sensing film for fluorescent detection of Fe3+ in rice sample or glucose in serum sample was assessed. Satisfactory results indicate that this work will provide not only a new strategy for fluorescent detection of important substances in agricultural science, but also significant theoretical guidance and important reference value for the practical application and development of multi-functional sensing device. (C) 2016 Elsevier B.V. All rights reserved.

【 授权许可】

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