Influence of integrated alkyl-chain length on the mesogenic and photophysical properties of platinum-based metallomesogens and their application for polarized white OLEDs
作者:Yafei Wang、Jiang Fan、Junwei Shi、Hongrui Qi、Etienne Baranoff、Guohua Xie、Qingguo Li、Hua Tan、Yu Liu、Weiguo Zhu
DOI:10.1016/j.dyepig.2016.05.024
日期:2016.10
In this context, a series of platinum complexes containing a triphenylene unit, namely Pt5Pt8, was prepared and characterized. Platinum complex Pt6 shows a clearly column liquid crystalline property, confirmed by differential scanning calorimetry, polarized optical microscopy and X-ray diffraction. These platinum complexes only display monomolecular emission both in solution and in neat film, an effect
在此背景下,制备并表征了一系列包含亚苯撑单元的铂配合物,即Pt5 Pt8。铂络合物Pt6显示出清晰的柱状液晶性质,通过差示扫描量热法,偏振光学显微镜和X射线衍射确认。这些铂配合物仅在溶液和纯净膜中均显示出单分子发射,这归因于咔唑作为大基团的存在,不利于配合物的聚集。空穴迁移率在10 -5 –10 -6 cm 2 V -1 s -1范围内获得了用于退火的铂络合物膜的薄膜。已经发现,对准发射层的方法对器件的性能具有至关重要的作用。在基于Pt6的器件中实现了偏振比为1.4的偏振磷光白色有机发光二极管(OLED)的第一示例。这项研究开辟了磷光成矿物质在偏振白光发射中应用的新方面。