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[摘要]:We studied the influence of a pyridine moiety versus a phenyl moiety when introduced in the molecular design of an ambipolar host These pyridine-based host materials for organic light-emitting diodes (OLEDs) were synthesized in three to five steps from commercially available starting materials. The isomeric hosts have similar HOMO/LUMO energies; however, data from OLEDs fabricated using the above host materials demonstrate that small structural modification of the host results in significant changes in its carrier-transporting characteristics. |
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