| 학회 |
한국공업화학회 |
| 학술대회 |
2015년 가을 (11/04 ~ 11/06, 제주국제컨벤션센터(ICCJEJU)) |
| 권호 |
19권 2호 |
| 발표분야 |
디스플레이_포스터 |
| 제목 |
Theoretical Study on the o-Carboranes Substituted Iridium Complexes for the Enhancement of Phosphorescence Efficiency |
| 초록 |
The successful utilization of iridium(III) cyclometalates in such applications is mainly attributed to the facile control of the emissive triplet excited states (3MLCT and 3 ππ*) by modifying the electronic structure of the cyclometalating (C∧N) ligand. o-carborane (1,2-closo-C2B10H12) attracts growing interest because it may serve not only as a steric auxiliary to suppress quenching of solid state emission but also offer an electronic effect to alter the band gap and phosphorescence efficiency. Iridium(III) cyclometalates in which the two carborane units on the 4- or 5-positions of 2-phenylpyridine (ppy) ligands were tethered by an alkylene linker were prepared to investigate the effect of free rotation of o-carborane on phosphorescence efficiency. In comparison with the unlinked complex, tethering the o- carboranes to the 5-positions of ppy ligands enhanced phosphorescence efficiency by over 30-fold in polar medium (ΦPL = 0.37 vs 0.01 in THF). |
| 저자 |
이상욱, 이치호
|
| 소속 |
한양대 |
| 키워드 |
OLED; iridium(III) cyclometalates; o-carborane
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| E-Mail |
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