A novel electrochemical biosensor based on polyimide- boron nitride composite membranes

AKSOY B., PASAHAN A., GÜNGÖR Ö., KÖYTEPE S., SEÇKİN T.

INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS, vol.66, no.4, pp.203-212, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 66 Issue: 4
  • Publication Date: 2017
  • Doi Number: 10.1080/00914037.2016.1201763
  • Journal Name: INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS AND POLYMERIC BIOMATERIALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.203-212
  • Keywords: Amperometric biosensor, dopamine, membrane electrode, polyimide-boron nitride composites, GLASSY-CARBON ELECTRODE, ASCORBIC-ACID, HYPERBRANCHED POLYIMIDES, SELECTIVE-MEMBRANE, GLUCOSE BIOSENSOR, PASTE ELECTRODE, DOPAMINE, FILM, IMMOBILIZATION, INTERFERENTS
  • Inonu University Affiliated: Yes

Abstract

Polyimide (PI) and polyimide-boron nitride (PI-BN) composites as dopamine-selective membrane were synthesized. The structures of the monomer, pure PI, and PI-BN composites were characterized by FT-IR, SEM, and thermal analysis techniques. Experiment results showed that introduction of BN particles increased porosity, selectivity and improved heat-resistance of polyimide matrix. Selectivity of PI-BN composite membranes toward dopamine and interferences was examined by DPV technique. Electrochemical measurement results illustrated that polyimide membrane containing 5% BN possessed wide linear ranges, excellent sensitivity, selectivity, reversibility, and low detection limits (4 X 10(-8) M). The polyimide membrane was very high R value (0.9904).