| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 봄 (04/04 ~ 04/06, 대전컨벤션센터) |
| 권호 |
43권 1호 |
| 발표분야 |
분자전자 부문위원회 I |
| 제목 |
Substituents Engineered Deep-Red to Near Infrared Phosphorescence from tris-Heteroleptic IridiumIII Complexes for Highly Efficient Red-NIR Organic Light-Emitting Diodes |
| 초록 |
The development of highly efficient, stable, and low-cost near-infrared (NIR) emitting luminophores is still a formidable challenge. We developed a series of deep-red to near infra-red emissive iridium(III) complexes (Ir1 - Ir8) which is based on electron-withdrawing (-CF3, -COOEt) and electron-donating (-CH3) substituents anchored on the quinoline moiety of (benzo[b]thiophen-2-yl) quinoline cyclometalating ligands. These substituents help to engineer the emission band gap systematically. In addition, we performed an in-depth and comparative study to investigate the effects of the substitution on photophysical, electrochemical properties. Most importantly, the -CF3 as well as -CH3 substituted complexes (Ir1 and Ir7) are promising with their phosphorescence quantum efficiency and these novel molecules can be a significant contribution for the development of deep red to NIR OLEDs. |
| 저자 |
BEJOY MOHAN DAS K S1, 김해운2, 김민준2, 박태호2
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| 소속 |
1Pohang Univ. of Science and Technology, 2포항공과대 |
| 키워드 |
iridium; cyclometalating; substituents; phosphorescence; OLED. near-infrared; deep-red
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| E-Mail |
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