Title Indolo fragmentus turinčių elektroaktyvių junginių sintezė ir savybės /
Translation of Title Synthesis and properties of indole-based electroactive compounds.
Authors Keruckienė, Rasa
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Pages 36
Keywords [eng] indole ; luminescence ; optoelectronic devices
Abstract [eng] The demanding requirements for the organic light emitting diodes force to search for new advanced organic electroactive materials. Indole-based materials show promising properties for the fabrication of efficient light emitting diodes (OLEDs). Indole-derived compounds have good luminescent and hole-transporting properties. There are still few reports on the synthesis and studies of electroactive indole derivatives with reactive functional groups. The synthesis and studies of cross-linkable indole derivatives can open new possibilities in the fabrication of stable and efficient OLEDs by wet technologies. In this work, synthesis and properties of indole-based electroactive materials are presented. Simple and efficient synthetic methods were applied for the preparation of target compounds. Their thermal, optical, photophysical, electrochemical and photoelectrical properties were investigated by experimental and computational methods. The derivatives of 2-phenylindole were used as hosts in green phosphorescenr OLEDs. Iridium complex tris[2-phenylpyridinato-C2,N]iridium(III) was used as emitter. The devices demonstrated practically pure emission of the used dopant, the relatively low values of the turn-on voltages of 3.7 and 3.1 V as well as the brightness reaching 5700 and 11900 cd/m2. Napthyl-susbtituted dolylbenzo[b]carbazole derivatives were used as emitters in non-doped blue OLEDs. The devices demonstrated low values of turn-on voltages of 3.4 and 3.6 V and very high brightness values reaching 17700 Cd/m2and external quantum efficiency of 3.4 %.
Dissertation Institution Kauno technologijos universitetas.
Type Summaries of doctoral thesis
Language Lithuanian
Publication date 2017