DIAMINE COMPOUNDS FOR PHOSPHORESCENT DIAZABOROLE METAL COMPLEXES AND ELECTROLUMINESCENT DEVICES
申请人:Commonwealth Scientific and Industrial
Research Organisation
公开号:EP2927221A1
公开(公告)日:2015-10-07
The present disclosure generally relates to diamine compounds, which may be used as precursors in preparing diazaborole compounds and phosphorescent diazaborole metal complexes. The present disclosure also relates to diazaborole compounds, diazaborole metal complexes, and electroluminescent emission materials and electronic devices thereof. The present disclosure further relates to processes for preparing the diamine compounds and diazaborole metal complexes.
Novel red-emitting thieno-[3,4-b]-pyrazine derivatives suitable for vacuum evaporation and solution method to fabricate non-doped OLEDs
作者:Qing Li、Jiuyan Li、Ruixia Yang、Lijun Deng、Zhanxian Gao、Di Liu
DOI:10.1016/j.dyepig.2011.05.029
日期:2012.1
Two novel red-emitting thieno-[3,4-b]-pyrazine-cored molecules with phenyls (TP) or polyphenyls (Mullen type dendron, DTP) as peripheral groups were designed and synthesized. They have large Stokes shifts over 100 nm. DTP is thermally stable with decomposition temperature up to 458 degrees C. More importantly, it is amorphous with a remarkably high glass transition temperature of 262 degrees C. DTP can be made into thin films either by solution method or vacuum evaporation. Red OLEDs were fabricated using either spin coated or vacuum evaporated DTP film as emitting layer. The evaporated device exhibited a maximum brightness of 1753 cd m(-2) and a luminous efficiency of 0.74 cd A(-1), which are among the best data ever reported for thieno-[3,4-b]-pyrazine derivatives so far. In contrary, TP failed to produce satisfied red emission in its evaporated OLEDs. (C) 2011 Elsevier Ltd. All rights reserved.
Oxidative Self-Annulation of 2,5-Diaryl-3,4-diaminothiophene via C–C and C–S Bond Cleavage of the Thiophene Ring: A New Synthesis of an Amino-Substituted Triarylthieno[3,4-b]pyrazines and Their Photophysical Properties
作者:Satoshi Minakata、Youhei Takeda、Satoshi Ueta
DOI:10.3987/com-16-s(s)11
日期:——
A novel oxidative self-annulation of 2,5-diaryl-3,4-diaminothiophenes that accompanies C-C and C-S bonds cleavage of a thiophene ring to produce 3,5,7-triaryl-2-aminothieno[3,4-b]pyrazines in moderate to good yields has been discovered. Photophysical properties of this new family of thienopyrazines have also been disclosed.