| 학회 |
한국공업화학회 |
| 학술대회 |
2017년 봄 (05/10 ~ 05/12, 광주 김대중컨벤센센터(Kimdaejung Convention Center)) |
| 권호 |
21권 1호 |
| 발표분야 |
나노 |
| 제목 |
Carboxylic Acid-Functionalized Conducting-Polymer Nanotubes as Highly Sensitive Nerve-Agent Chemiresistors |
| 초록 |
There has been much effort to detect highly toxic organophosphates which are powerful inhibitors of acetylcholinesterase. Nevertheless, there is still an urgent need to develop a new and improved methodology. Here, we present the fabrication of chemiresistive gas sensors using conducting-polymer polypyrrole (PPy) nanotube transducers, which are chemically specific and capable of recognizing sub-ppb concentrations (ca. 0.5ppb) of dimethyl methylphosphonate (DMMP), a simulant of nerve agent sarin. Interestingly, the introduction of carboxylic groups on the surface of PPy nanotube transistors resulted in enhanced sensitivity to DMMP via intermolecular hydrogen bonding. Furthermore, it was found that the sensitivity of the nanotube transducer depended on the degree of the carboxylic group introduced. Finally, a sensor array composed of 5 different transducers including the carboxylated nanotubes exhibited excellent selectivity to DMMP in 16 vapor species. |
| 저자 |
김경호1, 이상혁2, 박철순1, 윤현석1, 권오석2
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| 소속 |
1전남대, 2한국생명공학(연) |
| 키워드 |
Nerve Agent; Chemiresistor; Sensing; Polypyrrole
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| E-Mail |
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