Abstract
New hole transport polymers were prepared by polyaddition of N,N′-diphenyl-N,N′-bis(4-methylphenyl)-1,4-phenylenediamine (PDA) with divinyl or diisopropenyl benzene and were characterized by 1H NMR, differential scanning calorimetry (DSC), UV absorption spectra and cyclic voltammetry. These polymers exhibit high glass transition temperatures and low oxidation potentials. Two-layer electroluminescent (EL) devices, in which the polymers were spin cast on ITO anode as the hole transport layer and aluminum tris (8-hydroxyquinoline)(Alq) was used as the emitting layer, gave a high brightness of above 10000 cd m-2 with an operating voltage of less than 15 V.
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Wang, X., Chen, Z., Ogino, K. et al. Synthesis of New Hole Transport Polymers Based on N,N′-Diphenyl-N,N′-bis(4-methylphenyl)-1,4-phenylenediamine. Polym J 32, 778–783 (2000). https://doi.org/10.1295/polymj.32.778
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DOI: https://doi.org/10.1295/polymj.32.778