121st General Meeting of the KCS

Type Poster Presentation
Area Electrochemistry
Room No. Event Hall
Time 4월 20일 (금요일) 11:00~12:30
Code ELEC.P-590
Subject The optimization and characterization of polymer hydrogel core-shelled CNT and its application as a direct electron transfer (DET) determination of glucose via glucose dehydrogenase
Authors HoJin Cho, RYANG HYEON KIM1, Won-Yong Jeon*, Young Bong Choi, Hyug-Han Kim*
Department of Chemistry, Dankook University, Korea
1Dankook University, Korea
Abstract Abstract: For having good dispersion in the water and electro sensitivity, the hydrophilic dispersion of multi-walled carbon nanotubes (MWCNTs) have been studied and applied for bio- and electrochemistry. In this study, four kinds of hydrogel polymers (poly(acrylamide)-poly(vinylpyridine) (PAAd-PVP), poly(acrylic acid)-poly(vinylpyridine) (PAAc-PVI), poly(acrylamide)-poly(vinylimidazole) (PAAd-PVI), and poly(acrylic acid)-poly(vinylimidazole) (PAAc-PVI)) were employed for dispersion of MWCNTs. Its controlled size and dispersion in water were applied to glucose sensor. Electrode involving polymer-MWCNTs had high sensitivity than without that. Surface morphology of the modified electrode ware examined by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). And electrochemical impedance was measured by potentiostat. Detection of glucose were measured by cyclic voltammetry (CV) and result of detection of glucose shown that quantification with linearly calibration curve with various concentration. And electrical signal for scan rate were shown linearly curve. For detection of glucose, modified electrodes were showed no interferences from ascorbic acid or uric acid. Therefore, this approach make glucose sensor develop high sensitivity and accurate.
E-mail iamjogoon@naver.com