| 학회 | 한국화학공학회 |
| 학술대회 | 2005년 가을 (10/21 ~ 10/22, 인하대학교) |
| 권호 | 11권 2호, p.2040 |
| 발표분야 | 생물화공 |
| 제목 | Characterization of a Carbon Composite Electrode for an Electrochemical Immunosensor |
| 초록 | A label-free electrochemical immunosensor for rapid detection of Escherichia coliO157:H7 was developed by using a sol-gel method with graphite powder(about 34 ㎛). Here anti-E.coli. antibodies were physisorbed onto a porous carbon composite electrode. Direct measurements by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in presence of [Fe(CN)6]3-/4- as a redox probe showed that the immobilization of antibodies onto the carbon composite electrode surface and the binding of E.coli cells with antibodies increases the electron-transfer resistance systematically. Surface morphology of a carbon composite electrode was also investigated using scanning tunneling microscopy (STM). |
| 저자 | 장병옥, 조은찬, 구기갑 |
| 소속 | 서강대 |
| 키워드 | sol-gel; immunosensor; E.coli |
| 원문파일 | 초록 보기 |
