| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
나노_포스터 |
| 제목 |
Aptamer-Functionalized Multichannel Carbon Nanofibers for a FET-Type Bisphenol A Sensor |
| 초록 |
We fabricated aptamer-functionalized multichannel carbon nanofibers for use as a FET sensor to detect bisphenol A (BPA). Multichannel carbon nanofibers (MCNF) were fabricated by single-nozzle electrospinning of two immiscible polymer solutions followed by thermal treatment in inert atmosphere. MCNF were oxidized with a HNO3/H2SO4 mixture to introduce carboxyl groups on the surface of the fibers. By forming a covalent bond with amide, carboxylated MCNF (C_MCNF) were immobilized on an amine functionalized electrode substrate and also amine-functionalized BPA-binding aptamer was introduced to the C_MCNF. The FET sensor based on A_C_MCNF exhibited ultrahigh sensitivity and selectivity towards BPA at an unprecedentedly low concentration (1 fM). Furthermore, a longer lifespan can be expected due to the covalent bonding. |
| 저자 |
장정식, 김성근
|
| 소속 |
서울대 |
| 키워드 |
Bisphenol A; carbon nanofibers; FET sensor; aptamer
|
| E-Mail |
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