| 학회 |
한국고분자학회 |
| 학술대회 |
2021년 봄 (04/07 ~ 04/09, 대전컨벤션센터) |
| 권호 |
46권 1호 |
| 발표분야 |
분자전자 부문위원회 Ⅰ |
| 제목 |
Strategic Approach towards Highly Sensitive Ammonia Gas Detection: Stable Radical Anion Formation of Rylene Diimide Semiconductors with Perfluorinated Chains |
| 초록 |
In this work, we show a strategic approach to achieve highly NH3 sensitive SRAF films and their OFET gas sensors through rationale molecular design and device engineering. New rylene diimide derivatives used in this study introduce N-substituted linear-shaped perfluoroalkyl groups that exhibit stronger electron-withdrawing capability and smaller steric hindrance compared to previously reported benzyl and phenyl EWGs and perylene diimide (PDI) semiconducting core that have larger area ofπ-conjugated bridge (i.e., larger gas-adsorption area) than NDI core. Based on these systemic molecular design combined with optimization of device structures, PDI-based OFETs showed unprecedentedly high gas-responsivity. These results suggest that incorporation of rationale combination of electron-deficient core skeleton and EWG substituents is a simple design rule and offers very effective way for fabricating highly sensitive amperometric Lewis base gas sensors. |
| 저자 |
오병민1, 박성하1, 이정현2, 김진철2, 이종범1, 이윤상1, 윤우진1, 윤호섭1, 곽상규2, 권오필1, 김종현1
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| 소속 |
1아주대, 2UNIST |
| 키워드 |
Ammonia Gas Sensor; Rylene Diimide; Stable Radical Anion Formation; Organic Field Effect transistor
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| E-Mail |
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