초록 |
Highly efficient emitting materials consisting of dual core derivatives were designed and synthesized. We introduced various aromatic ring groups of dual cores in order to investigate the changes in the efficiencies of the first and the second core moieties. The newly synthesized materials are blue emitting materials that exhibit high efficiencies. Of the synthesized materials, TP-AP-TP was found to exhibit the highest EL device efficiency of 5.34 cd/A. TP-AB-TP, TP-AN-TP, TP-AA-TP, TP-AP-TP and TP-AC-TP exhibit EL maximum values of real blue color in the range 449 to 462 nm. So these materials show good blue color coordinates for displays. |