Kang Seokwoo, Lee Hayoon, Jung Hyocheol, Shin Donghee, Park Miyeon, Kay Kwang-Yol, Park Jongwook
Department of Chemical Engineering, The Kyunghee University of Korea, Gyeonggi-do, 17104, Korea.
R&D Center, G-OLED Co. Ltd., Yeongtong-ro 323-38, Suwon 16676, Korea.
J Nanosci Nanotechnol. 2018 Mar 1;18(3):2162-2165. doi: 10.1166/jnn.2018.14947.
New three emitting compounds, AK-1, AK-2 and AK-3 including diazocine moiety were synthesized through Suzuki-coupling reaction. Physical properties such as optical, electroluminescent properties were investigated. UV-visible spectrum of AK-1, AK-2 and AK-3 in film state showed maximum 392, 393 and 401 nm. PL spectrum of AK-1, AK-2 and AK-3 showed maximum emission wavelength of 472, 473 and 435 nm. Three compounds were used as EML in OLED device: ITO/2-TNATA (60 nm)/NPB (15 nm)/EML (35 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm). AK-3 OLED device showed C.I.E value of (0.18, 0.26) and luminance efficiency of 0.51 cd/A at 10 mA/cm2. New derivatives including diazocine moiety were introduced as OLED emitting material and the EL efficiency was increased by the proper combination of core and side group.
通过铃木耦合反应合成了三种含二氮杂萘部分的新型发光化合物AK-1、AK-2和AK-3。研究了它们的光学、电致发光等物理性质。AK-1、AK-2和AK-3薄膜状态下的紫外可见光谱显示最大波长分别为392、393和401nm。AK-1、AK-2和AK-3的光致发光光谱显示最大发射波长分别为472、473和435nm。这三种化合物被用作有机发光二极管（OLED）器件中的发光层：氧化铟锡（ITO）/2,2',2''-三（萘-2-基）联三苯胺（2-TNATA，60nm）/N,N'-二苯基-N,N'-双（1-萘基）-（1,1'-联苯）-4,4'-二胺（NPB，15nm）/发光层（EML，35nm）/8-羟基喹啉铝（Alq3，20nm）/氟化锂（LiF，1nm）/铝（Al，200nm）。AK-3有机发光二极管器件在10mA/cm²时的国际照明委员会（C.I.E）值为（0.18,0.26），发光效率为0.51cd/A。含二氮杂萘部分的新型衍生物被引入作为有机发光二极管发光材料，通过核心基团和侧链基团的适当组合提高了电致发光效率。
