The author of 《Efficient deep blue OLEDs with extremely low efficiency roll-off at high brightness based on phenanthroimidazole derivatives》 were Chen, Xiang; Zhao, Jue-Wen; Zheng, Xu-Hui; Zhu, Jie-Ji; Yang, Guo-Xi; Tang, Shan-Shun; Tong, Qing-Xiao; Tao, Si-Lu. And the article was published in Chinese Chemical Letters in 2019. Name: 1-Bromo-3-iodobenzene The author mentioned the following in the article:
Phosphorescent and thermally activated delayed fluorescence (TADF) emitters can break through the spin statistics rules and achieve great success in external quantum efficiency (>5%). Maintaining high efficiency at high brightness is a tremendous challenge for applications of organic light emitting diodes. Two phenanthroimidazole derivatives PPI-An-CN and PPI-An-TP are reported, and extremely low efficiency roll-off with ∼99% of the maximum external quantum efficiency (EQEmax) maintained even at a high luminance of 1000 cd/cm2 based nondoped devices were achieved. When doping the 2 materials in CBP (4,4′-bis(N-carbazolyl)-1,1′-biphenyl), the doped devices still exhibited excellent stability at high brightness with CIEy ≈ 0.07 and low turn-on voltage of only 2.8 V. The state-of-the-art low efficiency roll-off makes the new materials attractive for potential applications. It is the 1st time that the Fragment Contribution Anal. method was used to analyze the excited state properties of the mols. in the field of OLEDs, which helps one understand the mechanism more intuitively and deeply.1-Bromo-3-iodobenzene(cas: 591-18-4Name: 1-Bromo-3-iodobenzene) was used in this study.
1-Bromo-3-iodobenzene(cas: 591-18-4) has been used in the preparation of 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,10-heptadecafluorodec-1-ene and 1-(3′-bromophenyl)-3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooct-1-ene.Name: 1-Bromo-3-iodobenzene
Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com