Synthesis, characterization, and OLED application of oligo(p-phenylene ethynylene)s with polyhedral oligomeric silsesquioxanes (POSS) as pendant groups
2010; Elsevier BV; Volume: 66; Issue: 48 Linguagem: Inglês
10.1016/j.tet.2010.10.009
ISSN1464-5416
AutoresVuthichai Ervithayasuporn, Junichi Abe, Xin Wang, Toshinori Matsushima, Hideyuki Murata, Yusuke Kawakami,
Tópico(s)Organic Light-Emitting Diodes Research
ResumoTwo new classes of mono- and oligo(p-phenylene ethynylene)s grafted with polyhedral oligomeric silsesquioxanes (POSS) were synthesized via 'click' chemistry and palladium-catalyzed Sonogashira cross-coupling. These materials with cubic silsesquioxanes are very robust with excellent thermal stability in air (T5%loss>330 °C) and exhibited Tg>80 °C. All the compounds showed high photoluminescence with a range of blue emission and quantum yield up to 80% in the solution. Extended π conjugation molecules of oligo-pPEs POSS maintain relatively high PL quantum efficiencies in the solid state, compared to mono-pPEs POSS. A preliminary report is made of some of the materials as multilayer OLED components with active dopants PVK and PBD.
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