TY  - JOUR
T1  - Fine tuning of bipolar side group on dual anthracene core derivatives for highly efficient blue emitters
AU  - Kang, Seokwoo
AU  - Lee, Hayoon
AU  - Shim, Yeonhee
AU  - Park, Sunwoo
AU  - Park, Jongwook
JO  - Dyes and Pigments
VL  - 181
SP  - 108555
PY  - 2020
DA  - 2020/10/01/
SN  - 0143-7208
DO  - https://doi.org/10.1016/j.dyepig.2020.108555
UR  - https://www.sciencedirect.com/science/article/pii/S0143720820310329
AB  - Three bipolar blue fluorescent materials were newly synthesized by attaching diphenylamine (DPA), triphenylamine (TPA), and 9-phenylcarbazole amine (PCA) as an electron donating group and 2,4- diphenyl-1,3,5-triazine (DPT) as an electron withdrawing group to the dual anthracene core moiety. Compounds are [10'-(4,6-Diphenyl-[1,3,5]triazin-2-yl)-[9,9']bianthracenyl-10-yl]-diphenyl-amine (DPA-AA-DPT), {4-[10'-(4,6-Diphenyl-[1,3,5]triazin-2-yl)-[9,9']bianthracenyl-10-yl]-phenyl}-diphenyl- amine (TPA-AA-DPT), and 9-(4-(10'-(4,6-diphenyl-1,3,5-triazin-2-yl)-[9,9′-bianthracen]-10-yl)phenyl)- 9H-carbazole (PCA-AA-DPT), respectively. The optical, thermal, and electroluminescence (EL) properties of the synthesized materials were measured. Newly bipolar materials were found to have blue emission in the solution state and to acquire high PLQY values. A device doped with PCA-AA- DPT showed a very high efficiency of 6.86 cd/A and EQE of 5.53% at a high current density without roll-off phenomenon.
ER  -