Category: thiazole. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Bis[2-(1-isoquinolinyl-N)phenyl-C](2,4-pentanedionato-O2,O4)iridium(III), is researched, Molecular C35H27N2O2Ir, CAS is 435294-03-4, about tert-Butyl-substituted bicarbazole as a bipolar host material for efficient green and yellow PhOLEDs.
For host materials, a high triplet energy (ET) value and good charge transporting ability with appropriate frontier orbital energy are vital properties to achieve efficient phosphorescent organic light emitting diodes (PhOLEDs). A novel host material, 3,3′,6,6′-tetra-tert-butyl-9,9′-bicarbazole (tcaz-tcaz), was designed and synthesized by an intermol. N-N coupling reaction of 9,9′-bicarbazoles. The compound displays excellent thermal and morphol. stability with a decomposition temperature (Td) of 302° and a small value of root-mean-square roughness <0.670 nm for neat film, resp. Tcaz-tcaz possesses a high ET value of 3.0 eV and suitable HOMO/LUMO of -5.71 eV/-2.08 eV. Tcaz-tcaz hosted devices exhibit maximum external quantum, power and current efficiencies of 15.5%, 40.0 lm W-1 and 56.1 cd A-1, resp., with a low turn-on voltage of 2.4 V for Ir(ppy)3 and 11.0%, 35.6 lm W-1 and 35.9 cd A-1 for PO-01. Orange and red devices were also fabricated, showing inferior performance with a maximum external quantum efficiency of 3.81% for Ir(MDQ)2(acac) and 6.41% for Ir(piq)2(acac), resp. Thus, tcaz-tcaz is promising for use as a host material for the future exploration in multi-color PhOLEDs. Here is a brief introduction to this compound(435294-03-4)Category: thiazole, if you want to know about other compounds related to this compound(435294-03-4), you can read my other articles.
Reference:
Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica