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anjingyfg½ð³æ (СÓÐÃûÆø)
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OLED·½ÃæµÄÂÛÎľä×ÓÇëÇó·Òë
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| In general, cyclometalated Ir compounds emit from an admixture of triplet ligand centered (3LC) and metal-to-ligand charge-transfer (3MLCT) states. To induce blue phosphorescence, it is necessary to raise the energy of this state, which then allows for thermal access to higher triplet metal centered(3MC) states that increase nonradiative relaxation. Populating these antibonding orbitals can also result in the rupture of an Ir−N bond.14 Isomerization and photosubstitution may then occur through this pentacoordinate intermediate. |
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