| 세션명 | Graduate Student Oral Session (I) (English) |
|---|---|
| 발표장 | 제9회장 |
| 논문코드 | 1O9-6 |
| 발표일 | 2021-10-21 |
| 발표시간 | 15:15-15:30 |
| 논문제목 | Strategic Approach for Enhancing Sensitivity of Ammonia Gas Detection: Molecular Design Rule and Morphology Optimization for Stable Radical Anion Formation of Rylene Diimide Semiconductors |
| 발표자 | 오병민 |
| 발표자 소속 | 아주대학교 |
| 저자 | 오병민, 박성하, 이정현1, 김진철1, 이종범, 은형주, 이윤상, 서보은, 윤우진, 권지언2, 윤호섭, 곽상규1, 권오필, 김종현† |
| 소속 | 아주대학교; 1UNIST; 2KIST |
| 논문초록 | Herein, a strategic approach to enhance the sensitivity of ammonia gas detection using organic semiconductors by boosting the efficiency of ammonia gas-induced stable radical anion formation (SRAF) is reported. New rylene diimide derivatives are designed and used to prepare molecular templates for efficient SRAF in thin films, and they are applied as gas-adsorbing active layers in FETs. Substituting linear-shaped perfluoroalkyl (PF) groups to π-electron-deficient naphthalene diimide (NDI) backbone enhances the ammonia gas detection limit to 200 ppb, attributed to the strong electron-withdrawing capability and low steric hindrance of PF groups. Replacing the core backbone (NDI) with perylene diimide (PDI) while retaining the PF group further enhances gas responsivity up to 18.17 due to the enlarged π-conjugated bridge area. The results indicate that molecular engineering for high-efficiency SRAF suggests a new strategy for developing high sensitivity ammonia sensing platforms. |
THE POLYMER SOCIETY OF KOREA