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

作者:Aksoy Busra; Pasahan Aziz*; Gungor Oznur; Koytepe Suleyman; Seckin Turgay
来源:International Journal of Polymeric Materials and Polymeric Biomaterials, 2017, 66(4): 203-212.
DOI:10.1080/00914037.2016.1201763

摘要

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). [GRAPHICS] .

  • 出版日期2017