| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1493916 | Optical Materials | 2015 | 5 Pages |
•Polymers with arylcarbazolyl chromophores have been synthesized.•Electro-active layers of the materials were tested in OLEDs.•An electroluminescent OLED with Alq3 emitter demonstrated efficiency of 3.3 cd/A.
Monomers and their polymers containing 3-arylcarbazolyl electrophores have been synthesized by the multi-step synthetic route. The materials were characterized by thermo-gravimetric analysis, differential scanning calorimetry and electron photoemission technique. The polymers represent materials of high thermal stability having initial thermal degradation temperatures in the range of 331–411 °C. The glass transition temperatures of the amorphous polymeric materials were in the rage of 148–175 °C. The electron photoemission spectra of thin layers of monomers showed ionization potentials in the range of 5.6–5.65 eV. Hole-transporting properties of the polymers were tested in the structures of organic light emitting diodes with Alq3 as the green emitter. The device containing hole-transporting layers of polyether with 3-naphthylcarbazolyl groups exhibited the best overall performance with a maximum current efficiency of 3.3 cd/A and maximum brightness of about 1000 cd/m2.
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