Spirobi[dibenzo[b,e][1,4]azasiline]: a novel platform for host materials in highly efficient organic light-emitting diodes†,Journal of Materials Chemistry C

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Spirobi[dibenzo[b,e][1,4]azasiline]: a novel platform for host materials in highly efficient organic light-emitting diodes†
Journal of Materials Chemistry C ( IF 5.7 ) Pub Date : 2017-12-27 00:00:00 , DOI: 10.1039/c7tc05031c
Xiang-Yang Liu _{1,

2,

3,

4} , Xun Tang _{1,

2,

3,

4} , Yue Zhao _{5,

6,

7,

8,

9} , Danli Zhao _{1,

2,

3,

4} , Jian Fan _{1,

2,

3,

4,

10} , Liang-Sheng Liao _{1,

2,

3,

4,

10}

Affiliation

A novel spiro-type material (5H,5′H-10,10′-spirobi[dibenzo[b,e][1,4]azasiline]-5,5′-diyl)bis((4-methoxyphenyl)-methanone) (SDBSO) was designed and synthesized. The introduction of spirobi[dibenzo[b,e][1,4]azasiline] causes the material to retain high triplet energy (over 3.10 eV). In addition, owing to its highly steric and rigid structure and spiro-linkage, SDBSO exhibited good thermal stability and suitable frontier molecular orbital (FMO) energy levels. The RGB (blue, green, and red) three-color phosphorescent organic light-emitting diodes with SDBSO as the host material were fabricated and maximum external quantum efficiencies of over 20% were achieved for the green and red devices with relatively flat roll-off, indicating its potential utility as a host-building block for highly efficient PHOLEDs.

中文翻译：

Spirobi [dibenzo [ b，e ] [1,4] azasiline]：高效有机发光二极管中主体材料的新型平台†

一种新颖的螺型材料（5 ħ，5' ħ -10,10'-螺二[二苯并[ b，ë ] [1,4] azasiline] -5,5'-二基）双（（4-甲氧基苯基） -设计并合成了甲酮（SDBSO）。螺双[二苯并[ b，e] [1,4] azasiline]使材料保留高三重态能量（超过3.10 eV）。此外，由于其高度的空间和刚性结构以及螺链，SDBSO具有良好的热稳定性和合适的前沿分子轨道（FMO）能级。制作了以SDBSO为主体材料的RGB（蓝，绿和红）三色磷光有机发光二极管，对于具有相对平坦滚降的绿色和红色器件，实现了超过20％的最大外部量子效率，表明其潜在用途，可作为高效PHOLED的主体构建模块。

更新日期：2017-12-27

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