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题名: Reversible redox activity of ferrocene functionalized hydroxypropyl cellulose and its application to detect H2O2
作者: Li, Pingping1, 2; Kang, Hongliang1; Zhang, Chao1, 2; Li, Weiwei1, 2; Huang, Yong1, 3; Liu, Ruigang1
关键词: Hydroxypropyl cellulose ; Ferrocene ; Redox activity ; Biosensor ; Horseradish peroxidase
刊名: CARBOHYDRATE POLYMERS
发表日期: 2016-04-20
卷: 140, 页:35-42
收录类别: SCI
英文摘要: Novel ferrocene functionalized hydroxypropyl cellulose (HPC-Fc) were prepared by azide-alkyne cycloaddition and characterized. HPC-Fc exhibits an excellent reversible redox activity and could establish amazing electron transfer ability between enzyme and electrode. HPC-Fc and horseradish peroxidase (HRP) were coated on a platinized carbon electrode to prepare an amperometric biosensor for hydrogen peroxide (H2O2) detection. The amperometric response was measured as a function of H2O2 concentration at a fixed potential of 0.35V in 100 mM phosphate buffer solution (pH 7.0). The novel biosensor exhibits a fast linear response toward H2O2 in the range of 0.1-8 pilwith sensitivity of 4.21 nA/ M. Moreover, the enzyme assays measured by the spectrophotometer method confirm that abundant hydroxyl groups of HPC backbones are conductive for HRP to maintaining or even enhancing their activity. The redox active HPC-Fc with the unique properties of both ferrocene and cellulose is a good candidate for biosensor applications. (C) 2015 Elsevier Ltd. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/33811
Appears in Collections:高分子物理与化学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, State Key Lab Polymer Phys & Chem, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Tech Inst Phys & Chem, Natl Res Ctr Engn Plast, Beijing 100190, Peoples R China
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