New Deep Blue Emitting Materials Based on Indenopyrazine Core with High Thermal Stability
| Autor: | Chang-Hun Seok, Jongwook Park, Youngil Park, Ji-Hoon Lee, Soo-Kang Kim |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Materials science
Pyrazine business.industry Pl spectra Biomedical Engineering Bioengineering General Chemistry Condensed Matter Physics Core (optical fiber) Full width at half maximum chemistry.chemical_compound chemistry OLED Optoelectronics General Materials Science Thermal stability business Deep blue Current density |
| Zdroj: | Journal of Nanoscience and Nanotechnology. 11:4639-4643 |
| ISSN: | 1533-4899 1533-4880 |
| DOI: | 10.1166/jnn.2011.3693 |
| Popis: | New deep blue emitting materials 2,8-bis(3,5-diphenylphenyl)-6,6,12,12-tetraethyl-6,12-dihydrodiindeno[1,2-b:1',2'-e]pyrazine (DPP-EPY) and 2,8-bis(3',5'-diphenylbiphenyl-4-yl)-6,6,12,12-tetraethyl-6,12-dihydrodiindeno[1,2-b:1',2'-e]pyrazine (DPBP-EPY) were synthesized through introduction of m-terphenyl or triphenylbenzene bulky side groups in a new indenopyrazine core. These materials all showed high thermal stability and highly reduced intermolecular interaction. DPP-EPY and DPBP-EPY showed PL maxima of 456 nm and 460 nm in deep blue region and narrow PL spectra with full-width at half-maximum (FWHM) of 46 nm and 52 nm, respectively. As a result of making non-doped OLED devices using these synthesized materials as emitting layers, DPP-EPY showed EL spectrum of 452 nm, very narrow FWHM of 46 nm, luminance efficiency of 1.04 cd/A with current density of 10 mA/cm2 and CIE coordinate of (0.161, 0.104), creating a deep blue OLED close to the National Television System Committee (NTSC) blue standard. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|