Molecular Design of High-molecular-orientation Electron-transport Materials and Application to Organic Light-emitting Diodes
作者:Kazunori Togashi、Yuta Sagara、Takuma Yasuda、Chihaya Adachi
DOI:10.1246/cl.130150
日期:2013.6.5
Two novel electron-transport materials (ETMs), 2,3′-Bpy-TP and 2,4′-Bpy-TP, with high horizontal molecular orientation to substrates, were synthesized. It was shown by measuring the IR absorption spectra of their deposited thin films that C–H···N hydrogen bonds are formed between the 2,3′-Bpy-TP molecules and between the 2,4′-Bpy-TP molecules. It was also shown that there is a closed relationship between their molecular orientations and the driving voltages of electron-only devices (EODs) using them as electron-transport layers (ETLs).
研究人员合成了两种新型电子传输材料(ETM)--2,3′-Bpy-TP 和 2,4′-Bpy-TP,这两种材料的分子与基底的水平取向度很高。通过测量其沉积薄膜的红外吸收光谱表明,2,3′-Bpy-TP 分子之间以及 2,4′-Bpy-TP 分子之间形成了 C-H-N 氢键。研究还表明,它们的分子取向与使用它们作为电子传输层(ETL)的纯电子器件(EOD)的驱动电压之间存在着封闭的关系。