期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 237, 期 -, 页码 59-66出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2016.06.082
关键词
Conjugated polymers; Fluorescence sensors; Fe3+ detection; One step electrosynthesis; Thin films
资金
- National Science Foundation of China [51203070, 51303073]
- Ganpo Outstanding Talents 555 projects
- Jiangxi Provincial Department of Education [GJJ12595, GJJ14301]
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.
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