A novel functional conducting polymer as an immobilization platform
Makaleler > Tam Makale · 2014
Yazarlar: Emine GÜLER ÇELİK, Hakan Can Soyleyici, Dilek ODACI, Metin Ak, Suna TİMUR
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, SCI Expanded İndekslerine Giren Dergi, Uluslararası, 2014, cilt 40, ss 148-156
DOI: 10.1016/j.msec.2014.03.063
Özet
Here, we present the fabrication of conducting polymer based enzymatic and microbial biosensors. To obtain immobilization platforms for both pyranose oxidase (PyOx) and Gluconobacter oxydans, the graphite electrode surface was modified with the polymer of 4-amino-N-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzamide (HKCN) which has free amino groups on the surface for further bioconjugation reactions with the biomolecules. Initially, the electrode surface was covered with HKCN via electropolymerization. Then, either PyOx or G. oxydans cell was stabilized using glutaraldehyde as a cross-linker. After optimization of biosensors, analytical characterization and surface imaging studies were investigated. The change of current depends on glucose concentration between 0.05-1.0 mM and 0.25-2.5 mM with HKCN/PyOx and HKCN/G. oxydans biosensors in batch systems. Also, the calibration graphs were obtained for glucose in FIA mode, and in this case, linear ranges were found to be 0.01-1.0 mM and 0.1-7.5 mM for HKCN/PyOx and HKCN/G. oxydans, respectively. (C) 2014 Elsevier B.V. All rights reserved.