| 학회 |
한국고분자학회 |
| 학술대회 |
2013년 봄 (04/11 ~ 04/12, 대전컨벤션센터) |
| 권호 |
38권 1호 |
| 발표분야 |
고분자구조 및 물성 |
| 제목 |
The formation of the multidimensional polypyrrole nanotube for highly sensitive and selective chemiresistive gas sensors |
| 초록 |
A rapid and efficient strategy of chemiresistive gas sensors based on multidimensional conducting polymer (CP) nanotubes was developed. Unique polypyrrole structures consisting of nanowires (NWs) and nanonodules (NDs) were grown on electrospun nanofiber template by vapor deposition polymerization (VDP). The resulting multidimensional polypyrrole nanotubes (MPPy NTs) exhibited an enhanced surface-to-volume ratio with an anisotropic tubular structure that provided efficient charge carrier transport along the rotational axis of the nanotube. Importantly, the electrical resistance changes of the MPPy NTs were both sensitive and selective to specific VOCs. The minimum detection limit (MDL) for gaseous ammonia was 10 ppb, which is 2–3 orders of magnitude lower than that of previously reported ammonia sensors. It is still a challenge to precisely control the morphology of functional polymers on a nanometer scale for various future technologies. |
| 저자 |
안지현, 박선주, 장정식
|
| 소속 |
서울대 |
| 키워드 |
conducting polymer; vapor deposit polymerization
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| E-Mail |
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