121st General Meeting of the KCS

Type Poster Presentation
Area Analytical Chemistry
Room No. Event Hall
Time 4월 19일 (목요일) 11:00~12:30
Code ANAL.P-285
Subject Observation of eletrocatalytic reaction about p-AP oxidation on ferrocene mixed SAM au electrode
Authors YESOL SONG, Sunghyun Kim1, Seong Jung Kwon2,*
chemistry, Konkuk University, Korea
1Chemistry, Konkuk University, Korea
2Department of Chemistry, Konkuk University, Korea
Abstract In electrochemically biosensor study, various method was introduced. Study for ferrocene mixed SAM usually uses cyclic voltammetry for detecting p-AP(p-Aminophenol) oxidation with ferrocene. Ferrocene use as catalyst for p-AP oxidation. So p-AP contained solution reaction with ferrocene, then oxidation peak sharply increased. This reaction mechanism is usually applied for electrochemical biosensor. Biosensor using Au electrode with ferrocene mixed SAM and Alkaline phosphatase (ALP) conjugated biomolecule for reacting p-APP(p-Aminophenol Phosphatase) to p-AP. In these solution, electrocatalytic property of p-AP oxidation with ferrocene showed a much higher peak current. In backward cylic voltammetry scan, reduction peak current of quinoimide produced by p-AP oxidation is not observed. Because electron transfer to quinoimide from ferrocene doesn’t preferred thermodynamically. These mechanism can applied for electrochemical biosensor.
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