| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 9776334 | Synthetic Metals | 2005 | 4 Pages |
Abstract
A series of hyper-branched and linear-type conjugated polymers based on substituted para-phenylenes with iridium complexes was synthesized by Yamamoto polycondensation. The efficient energy transfer from polypara-phenylene segments to iridium complex is observed. EL emission from PPP segments is completely quenched at as low as 0.5Â mol % of the Ir complex content in feed ratio. The hyper-branched copolymers emit green light, and the maximal external quantum efficiencies are around 1.5% for BHPPPIrPPy copolymers. CNPPPIrMPPy(acac)-1 copolymer emits yellow light with a maximal external quantum efficiency of 1.3%.
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Authors
W. Yang, H.Y. Zhen, C.Y. Jiang, L.J. Su, J.X. Jiang, H.H. Shi, Y. Cao,