Highly efficient blue OLED based on 9-anthracene-spirobenzofluorene derivatives as host materials
作者:Myoung-Seon Gong、Hyun-Seok Lee、Young-Min Jeon
DOI:10.1039/c0jm00593b
日期:——
A novel spiro[benzo[c]fluorene-7,9′-fluorene](SBFF)-based blue host material, 9-(10-phenylanthracene-9-yl)SBFF (BH-9PA), 9-(10-(naphthalene-1-yl)anthracene-9-yl)SBFF (BH-9NA) and 9-(10-(4-(naphthalene-1-yl)phenyl)anthracene-9-yl)SBFF (BH-9NPA) were successfully prepared by reacting 9-bromo-SBFF (2) with 10-phenylanthracene-9-yl boronic acid, 10-(naphthalene-1-yl)anthracene-9-yl boronic acid and 10-(4-(naphthalene-1-yl)phenyl)anthracene-9-yl boronic acid through the Suzuki reaction, respectively. Bis[4-(di-p-N,N-diphenylamino)styryl]stilbene (DSA-Ph) and N,N-diphenyl-N′,N′-dim-tolyl-SBFF-5,9-diamine (BD-6MDPA) were used as dopant materials. Blue OLEDs with the configuration ITO/DNTPD/NPB/host : 5% dopant/Alq3/Al-LiF were prepared from the three host materials doped with DSA-Ph and BD-6MDPA dopants and the device composed of BH-9PA doped with DSA-Ph and BD-6MDPA showed blue EL spectra at 468 and 464 nm at 7 V and luminance efficiencies of 7.03 and 6.60 cd A−1, respectively.
一种新型以螺[苯并[c]荧蒽-7,9′-荧蒽](SBFF)为基础的蓝色主材料,9-(10-苯基蒽-9-基)SBFF (BH-9PA)、9-(10-(萘-1-基)蒽-9-基)SBFF (BH-9NA) 和 9-(10-(4-(萘-1-基)苯基)蒽-9-基)SBFF (BH-9NPA) 通过将9-溴-SBFF (2)与10-苯基蒽-9-基硼酸、10-(萘-1-基)蒽-9-基硼酸和10-(4-(萘-1-基)苯基)蒽-9-基硼酸通过铃木反应成功合成。双[4-(二-p,N,N-二苯胺)乙烯]苯乙烯 (DSA-Ph) 和 N,N-二苯基-N′,N′-二甲基托烯-5,9-二胺 (BD-6MDPA) 被用作掺杂材料。采用结构为ITO/DNTPD/NPB/主材料:5%掺杂剂/Alq3/Al-LiF的蓝色OLED被制备,使用了掺入DSA-Ph和BD-6MDPA掺杂剂的三种主材料,其中掺有DSA-Ph和BD-6MDPA的BH-9PA器件在7 V时显示出468 nm和464 nm的蓝色电致发光光谱,亮度效率分别为7.03和6.60 cd A−1。