Synthesis, Thermal and Luminescence Properties of Ortho-Terphenyl Derivatives with 1,3,4-Oxadiazole Moiety
- Authors
- Choi, E-Joon; Hwang, Jun-Ha; Kwon, Eun-Kyoung; Jin, Jung-Il; Ahn, Yong-Hwan; Kim, Young-Chul; Yu, Jae-Woong; Shi, Wen Sheng; Samulski, Edward T.
- Issue Date
- 2011-03
- Publisher
- TAYLOR & FRANCIS LTD
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.550, pp.189 - 204
- Abstract
- A series of compounds and two polymers, all consisting of o-terphenyl and 1,3,4-oxadiazole units, were synthesized. They were characterized by GC, FT/IR, NMR, elemental analysis, viscometry, DSC, POM, TGA, and absorption and emission spectrometry. In general, by introducing an o-phenyl central core to 2,5-diphenyl-1,3,4-oxadiazole backbone, the processablility of these materials was improved while maintaining a blue-light-emitting capability. The CIE coordinates of compounds with p-chloro, methoxy and t-butyl groups in EL devices were found to be (0.19, 0.16), (0.17, 0.13) and (0.18, 0.13), respectively, i.e., in the deep-blue region. Also, amorphous polymer with a m-phenylene unit, which shows good solubility in common organic solvents and excellent thermal stability, emits indigo-light at 415 nm on photoexcitation.
- Keywords
- FULLY AROMATIC POLY(1,3,4-OXADIAZOLE)S; EFFICIENT BLUE ELECTROLUMINESCENCE; LIGHT-EMITTING MATERIALS; ORGANOSOLUBLE RIGID-ROD; SOLID-STATE PROPERTIES; ELECTRON-INJECTION; POLYMER; blue-light-emitting materials; amorphous and soluble OLED; thermally stable PLED; o-terphenyl derivatives; heteroaromatic moiety
- ISSN
- 1542-1406
- URI
- https://pubs.kist.re.kr/handle/201004/130544
- DOI
- 10.1080/15421406.2011.599740
- Appears in Collections:
- KIST Article > 2011
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