Synthesis and application of poly-SNS-anchored carboxylic acid: a novel functional matrix for biomolecule conjugation

Date

2011-01-01

Author

Ekiz, Fulya
Oguzkaya, Funda
Akin, Mehriban
TİMUR, SUNA
Tanyeli, Cihangir
Toppare, Levent Kamil

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Here we report the synthesis of a novel conducting polymer and its properties as an immobilization platform for biosensor application. The conducting polymer has functional groups used for the formation of amide bonding with the enzyme immobilized on the polymer surface. After covalent immobilization of glucose oxidase (GOx) on the polymeric matrix, its application for glucose biosensing was investigated in detail. Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and contact angle measurements were used to monitor the surface properties of the polymer before and after biomolecule conjugation. The optimized biosensor showed a very good linearity between 0.01 mM and 1.2 mM, a 13 s response time and a detection limit (LOD) of 0.004 mM to glucose. Also, kinetic parameters, operational and storage stabilities were determined. Apparent Michaelis constant (K-m(app)) and I-max values of 1.17 mM and 11.28 mu A, respectively, were obtained.

Subject Keywords

Glucose-Oxidase, Conducting Polymer, Immobilization, Electrode, Dimerization, Film, Polypyrrole

URI

https://hdl.handle.net/11511/40746

Journal

JOURNAL OF MATERIALS CHEMISTRY

DOI

https://doi.org/10.1039/c1jm12048d

Collections

Department of Chemistry, Article

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Citation Formats

F. Ekiz, F. Oguzkaya, M. Akin, S. TİMUR, C. Tanyeli, and L. K. Toppare, “Synthesis and application of poly-SNS-anchored carboxylic acid: a novel functional matrix for biomolecule conjugation,” JOURNAL OF MATERIALS CHEMISTRY, pp. 12337–12343, 2011, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/40746.