Synthesis and characterization of a new poly(dithieno ( 3,2-b: 2 `, 3 `-d) pyrrole) derivative conjugated polymer: Its electrochromic and biosensing applications
Azak, Hacer and Yildiz, Huseyin Bekir and Carbas, Buket Bezgin
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Abstract
Synthesis and electropolymerization of a new conjugated dithieno(3,2-b:
2',3'-d) pyrole (DTP) derivative, namely, 2-(2-(2-(4H-dithieno{[}3,2-b:
2',3'-d] pyrrol-4-yl) ethoxy) ethoxy) ethanamine, (DTP-alkoxy-NH2)
monomer are presented. The electrochemical, spectroelectrochemical
effects and biosensor capability towards to glucose oxidase enzyme of
P(DTP-alkoxy-NH2) polymer film are investigated in detail during the
placement of alkoxy-NH2 functional unit in the polymer. Electrochemical
and opticall results between neutral and oxidized states of the polymer
film show that (P(DTP-alkoxy-NH2)) has reversibly multi-electrochromic
behaviors. Furthermore, glucose oxidase enzyme (GOx) is covalently
immobilized on Au electrodes modified with P(DTP-alkoxy-NH2) conducting
polymer. This enzyme is entrapped into conducting polymer during
electropolymerization of DTP monomer on the electrodes. Some
characterization parameters (Maximum reaction rate, Michaelis-Menten
constants, temperature, pH and operational stabilities) for this kind of
biosensor application is also determined. (C) 2017 Elsevier Ltd. All
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