Solution-processable deep red-emitting supramolecular phosphorescent polymer with novel iridium complex for organic light-emitting diodes

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• 作者：Aihui Liang ; Gui Huang ; Zhiping Wang ; Wenjin Wu ; Yu Zhong…
• 关键词：supramolecular polymer ; iridium complex ; phosphorescence ; organic light ; emitting diode
• 刊名：Electronic Materials Letters
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：12
• 期：5
• 页码：615-621
• 全文大小：727 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Condensed Matter Physics
  Electronics, Microelectronics and Instrumentation
  Optical and Electronic Materials
  Thermodynamics
  Characterization and Evaluation of Materials
  
• 出版者：The Korean Institute of Metals and Materials, co-published with Springer Netherlands
• ISSN：2093-6788
• 卷排序：12

文摘

A novel bis(dibenzo-24-crown-8)-functionalized iridium complex with an emission peak at 665 nm was synthesized. Several deep red-emitting supramolecualr phosphorescent polymers (SPPs) as a class of solutionprocessable electroluminescent (EL) emitters were formed by utilizing the efficient non-bonding self-assembly between the resulting iridium complex and bis(dibenzylammonium)-tethered monomers. These SPPs show an intrinsic glass transition with a T_g of ca. 90 °C. The photophysical and electroluminescent properties are strongly dependent on the hosts’ structures of the supramolecular phosphorescent polymers. The polymer light-emitting diode based on SPP3 displayed a maximal external quantum efficiency (EQE) of 2.14% ph·el−1 and the Commission Internationale de L’Eclairage (CIE) coordinates of (0.70, 0.29).