|
Type |
Poster Presentation |
Area |
Electrochemistry |
Room No. |
Exhibition Hall 2+3 |
Time |
10월 20일 (금요일) 13:00~14:30 |
Code |
ELEC.P-492 |
Subject |
Glucose sensor based on enzyme bonded- conducting polymer formed on metal alloy in hierarchical structure |
Authors |
Won-Chul Lee, Kyeongdeok Seo, Yoon Bo Shim* Department of Chemistry, Pusan National University, Korea |
Abstract |
A novel amperometric sensor for glucose was developed by enzyme bonded-conducting polymer coated on the hierarchically structured metal alloy (Au, Zn, Ni, Cu, Co, etc.). Poly-3′-(carboxylic acid)-2,2′:5′,2′′-terthiophene (pTTCA) and poly-3′-(benzoic acid)-2,2′:5′,2′′-terthiophene (pTTBA) were exmined as the probe material. The sensor probe was prepared by electrochemical formation of enzyme-conducting polymer layer on a metal alloy using normal pulse voltammetry (NPV) and chronoamperometry (CA). The characterization of each layer was performed using cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDS). Experimental parameters were optimized in terms of pH, temperature, applied potential, deposition potential and deposition time. The proposed sensor exhibited highly stable and short response time (< 1s). The linear dynamic range was between 30 μM and 5 mM with the detection limit of 5.3 ± 0.42 μM. |
E-mail |
wclee13@pusan.ac.kr |
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