| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Effects of electron withdrawing pendant groups on thiophene backbone-based polymers for organic thin-film transistors |
| 초록 |
Two thiophene backbone-based p-type conjugated polymers with a benzodithiophenedione (BDD) moiety were synthesized with and without fluorination: fluorinated one (PF2-BDD) and non-fluorinated one (PT2-BDD). Both polymers were found to have planar backbones with efficient π conjugation, which can facilitate hole transports in organic thin-film transistors. By introducing fluorine atoms as pendant groups on the thiophene backbone, intra- and intermolecular dipole-dipole interactions (F···S and/or F···H) can be induced. As a result, PF2-BDD showed better backbone planarity and stronger intra- and intermolecular interactions than PT2-BDD. However, we found that PF2-BDD showed poorer hole mobilites than PT2-BDD, owing to solvent resistance, electron negativity, and random orientation. We think that our study can help to understand the relationship between the hole transport properties and molecular structures for designing thiophene-based p-type polymers with BDD moieties. |
| 저자 |
이규민1, 정문기2, 강진현2, 정인환2, 장재영1
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| 소속 |
1한양대, 2국민대 |
| 키워드 |
organic thin-film transistors; thiophene; benzodithiophenedione; pendant groups; solubility
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| E-Mail |
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