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Synthesis and characterization of novel red-light-emitting materials with push-pull structure based on benzo[1,2,5]thiadiazole containing arylamine as an electron donor and cyanide as an electron acceptor
- Issue Date
- Feb-2008
- Publisher
- 대한화학회
- Keywords
- benzo[1,2,5]thiadiazole; push-pull; inhibited intermolecular interaction; amorphous
- Citation
- Bulletin of the Korean Chemical Society, v.29, no.2, pp 335 - 338
- Pages
- 4
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- Bulletin of the Korean Chemical Society
- Volume
- 29
- Number
- 2
- Start Page
- 335
- End Page
- 338
- ISSN
- 0253-2964
1229-5949
- Abstract
- New efficient red emitter having short pi-conjugation length and asymmetric bulky structure, 2-(7-diphenylamino-benzo[1,2,5]thiadiazole-4-ylmethylene)-malononitrile, was synthesized and characterized. Using this material as a dopant, we fabricated electroluminescence device with a structure of ITO/DNTPD/NPD/BTZA (5 wt% in Alq(3))/Alq(3)/LiF/Al. The device exhibited a high brightness of 761 cd/m(2) at a driving voltage of 4.8 V, and current efficiency is 0.75 cd/A. The Commission International de I'Eclairage (CIE) coordinates of the EL device were found to be (0.62, 0.37) at 10 mA/cm(2).
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