Synthesis of ring-structured polysiloxane as host materials for blue phosphorescent device
作者:Zhongjie Ren、Rongben Zhang、Yuguang Ma、Feng Wang、Shouke Yan
DOI:10.1039/c1jm10290g
日期:——
A ringed polysiloxane with a side chain of dibenzothiophene groups (BS-PSQ) is successfully synthesized as confirmed by MALDI-TOF MS and 1H-NMR. DSC, TGA, AFM and spectra reveal its good film-forming ability, high thermal and morphological stability, and good miscibility with the dopant FIrpic. In addition, it also has a high triplet energy and a wide band gap. The BS-PSQ may be used as a host for the blue light emitter iridium complex FIrpic. The electrophosphorescent device based on BS-PSQ as the active layer exhibits typical blue emission, and the performance of the device is superior to that of any other POSS-based host material reported and also to some of the small molecular host materials.
Synthesis of Dibenzothiophene-Containing Ladder Polysilsesquioxane as a Blue Phosphorescent Host Material
作者:Zhongjie Ren、Dianming Sun、Huihui Li、Qiang Fu、Dongge Ma、Jianming Zhang、Shouke Yan
DOI:10.1002/chem.201103684
日期:2012.3.26
A ladderpolysilsesquioxanes with side chain of dibenzothiophene groups (BS‐LPSQ) was successfully synthesized. The ladder structure of BS‐LPSQ was characterized by MALDI‐TOF MS, XRD, and 1H NMR spectroscopy. Differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), atomic force microscopy (AFM), and spectroscopic analyses revealed that the BS‐LPSQ has good film‐forming ability, high
具有二苯并噻吩基(BS-LPSQ)侧链的梯形聚倍半硅氧烷已成功合成。BS-LPSQ的梯形结构通过MALDI-TOF MS,XRD和1 H NMR光谱进行了表征。差示扫描量热法(DSC),热重分析(TGA),原子力显微镜(AFM)和光谱分析表明BS‐LPSQ具有良好的成膜能力,高的热和形态稳定性以及与掺杂铱二的良好混溶性(4,6-二氟苯基)吡啶基-N,C 2吡啶甲酸(FIrpic),三重态能量高,带隙宽。此外,与先前报道的环状聚硅氧烷BS-PSQ磷光主体材料相比,BS-LPSQ的梯形结构不仅具有更高的耐热性,而且还可以防止分子聚集并有效避免荧光猝灭。因此,BS-LPSQ可以用作发蓝光铱配合物FIrpic的更好主机。基于梯形BS‐LPSQ作为有源层的电致磷光器件的性能优于环状BS‐PSQ和任何其他多面体低聚倍半硅氧烷(POSS)或聚合物基质材料。