Blue-Light-Emitting Bis(diarylamino)stilbene Derivatives: Synthesis, Photophysical Properties, and Highly Efficient OLEDs
- Authors
- Kim, Seul Ong; Lee, Kum Hee; Kwon, Hyuck Joo; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- 2010
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Bis(diarylamino)stilbene; blue fluorescent materials; Buchwald-Hartwig cross-coupling reaction; organic light-emitting diode
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.530, pp.196 - 203
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 530
- Start Page
- 196
- End Page
- 203
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/21705
- DOI
- 10.1080/15421406.2010.495886
- ISSN
- 1542-1406
- Abstract
- New electroluminescent materials, 4,4'-bis(2-naphthyl-4-tert-butylphenylamino)-stilbene (1), 4,4'-bis(4-tert-butylphenyl-3,5-di-tert-butylphenylamino) stilbene (2), and 4,4'-bis(di-4-tert-butylphenylamino) stilbene (3) were synthesized and characterized. To evaluate the electroluminescent properties of these compounds, multilayered OLED devices 1-3 were designed. By employing blue dopant 1 into a multilayer device, it was possible to achieve a maximum luminance of 8861 cd m(-2) at 12.0 V, a luminous efficiency of 6.82 cd A(-1) at 20 mA cm(-2), a power efficiency of 2.72 lm W-1 at 20 mA cm(-2), and CIEx,y coordinates of (x = 0.158, y = 0.187) at 10.0 V. These results demonstrated the superiority of these bis(diarylamino)-stilbene derivatives in organic light-emitting devices.
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