作者:Soo-Kang Kim、Young-Il Park、In-Nam Kang、Jong-Wook Park
DOI:10.1039/b706606f
日期:——
New blue fluorescent compounds containing tetra-substituted ethylene moieties have been designed and synthesized. These materials, 1,2-di(4′-tert-butylphenyl)-1,2-bis(4′-(anthracene-9-yl)phenyl)ethene [BPBAPE, 1A], 1,2-diphenyl-1,2-bis(4′-(anthracene-9-yl)phenyl)ethene [PBAPE, 1B], 9,10-bis(4-(1,2,2-tris(4-tert-butylphenyl)vinyl)phenyl)anthracene [BTBPPA, 2A], and 9,10-bis(4-(1,2,2-triphenylvinyl)phenyl)anthracene [BTPPA, 2B], were synthesized through Suzuki and McMurry reactions. By fabricating multilayered non-doped OLED devices using these new blue materials, we achieved luminance efficiencies of 4.00 lm W−1 (10.33 cd A−1 at 8.1 V) for BPBAPE [1A] and 1.82 lm W−1 (3.93 cd A−1 at 6.8 V) for BTPPA [2B] at 10 mA cm−2. The maxima in the electroluminescence spectra of ITO/2-TNATA (60 nm)/NPB (15 nm)/BPBAPE [1A] and BTPPA [2B] (30 nm)/Alq3 (30 nm)/LiF (1 nm)/Al (200 nm) devices were found to be 475 and 452 nm respectively. The BPBAPE [1A] and BTPPA [2B] devices exhibited sky blue emission (0.195, 0.303) and deep blue emission (0.159, 0.135) at 10 mA cm−2 respectively.
我们设计并合成了含有四取代乙烯分子的新型蓝色荧光化合物。这些材料包括 1,2-二(4′-叔丁基苯基)-1,2-双(4′-(蒽-9-基)苯基)乙烯 [BPBAPE,1A]、1,2-二苯基-1,2-双(4′-(蒽-9-基)苯基)乙烯 [PBAPE,1B]、9,10-双(4-(1、BTBPPA,2A] 和 9,10-双(4-(1,2,2-三苯基乙烯基)苯基)蒽 [BTPPA,2B]。通过使用这些新型蓝色材料制造多层无掺杂有机发光二极管器件,我们在 10 mA cm-2 的条件下,BPBAPE [1A] 的发光效率达到了 4.00 lm W-1(8.1 V 时为 10.33 cd A-1),BTPPA [2B] 的发光效率达到了 1.82 lm W-1(6.8 V 时为 3.93 cd A-1)。ITO/2-TNATA (60 nm)/NPB (15 nm)/BPBAPE [1A] 和 BTPPA [2B] (30 nm)/Alq3 (30 nm)/LiF (1 nm)/Al (200 nm) 器件的电致发光光谱的最大值分别为 475 和 452 nm。在 10 mA cm-2 时,BPBAPE [1A] 和 BTPPA [2B] 器件分别显示出天蓝色发射(0.195,0.303)和深蓝色发射(0.159,0.135)。