Design of a microbial sensor using conducting polymer of 4-(2,5-di(thiophen-2-yl)-1H-pyrrole-1-l) benzenamine


Tuncagil S., Odaci D. , Yidiz E., TİMUR S. , Toppare L.

SENSORS AND ACTUATORS B-CHEMICAL, vol.137, no.1, pp.42-47, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 137 Issue: 1
  • Publication Date: 2009
  • Doi Number: 10.1016/j.snb.2008.10.067
  • Title of Journal : SENSORS AND ACTUATORS B-CHEMICAL
  • Page Numbers: pp.42-47
  • Keywords: Conducting polymers, Microbial biosensors, Electrochemical polymerization, Electrochemical biosensors, GLUCONOBACTER-OXYDANS, BIOSENSOR, ETHANOL, FERMENTATION, GLYCEROL, GLUCOSE, CELLS

Abstract

A microbial biosensor based on Gluconobacter oxydans cells immobilized on the conducting polymer of 4-(2,5-di(thiophen-2-yl)-1H-pyrrol-1-yl)benzenamine (SNS-NH2) coated onto the Surface of graphite electrode was constructed. The proposed biosensor was characterized using glucose as the Substrate. The linear relation was observed in the range of 0.1-2.5 mM and defined by the equation y = 0.415x + 0.377 (R-2 = 0.986). Analytical characterization, effects of electropolymerization time, pH, cell amount and the presence of gold nanoparticles (GNP) on the polymer surface together with the biological material were examined as well. Finally, the system was used for ethanol and glucose detection in real samples. (c) 2008 Elsevier B.V. All rights reserved.