| 학회 |
한국고분자학회 |
| 학술대회 |
2020년 가을 (10/05 ~ 10/08, 부산컨벤션센터(BEXCO)) |
| 권호 |
45권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Influence of bulky substituents on the photophysical properties of homoleptic iridium(III) complexes |
| 초록 |
A new series of homoleptic cyclometalated iridium(III) complexes based on a phenylpyridine (ppy) ligand containing bulky substituents have been synthesized and characterized. Comparison of the results with those of the reference Ir(ppy)3 reveals that the emission color and photophysical properties of other Ir complexes are influenced by the electron-donating groups attached to the ppy ligand. The emission spectrum of Ir(Me-ppy)3, having –CH3 group, is red-shifted; however, the emission quantum yield is low and the nonradiative decay constant is large. On the other hand, although bulky phenyl derivative-adducts (Ir(Ph-ppy)3, Ir(MePh-ppy)3, and Ir(diMePh-ppy)3) also exhibit red-shifted emission, their kinetic and photophysical behaviors are more optimal than those of Ir(Me-ppy)3, whose behavior does not follow the energy gap law. This deviation may be attributed to the orthogonal structure associated with the steric hindrance of bulky substituents. |
| 저자 |
나수원, 백창현, 최민수, 김진형, 조대원, 강상욱, 손호진
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| 소속 |
고려대 |
| 키워드 |
bulky ligand; iridium; Ir(ppy)3; bulky substituents
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| E-Mail |
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