Iminodibenzyl-substituted distyrylarylenes as dopants for blue and white organic light-emitting devices
Iminodibenzyl-substituted distyrylarylenes as dopants for blue and white organic light-emitting devices
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DOI：
10.1016/j.orgel.2007.09.006
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发表时间：
2008-02
影响因子：
3.2
通讯作者：
Meng‐Huan Ho;Chia-Ming Chang;T. Chu;Teng-Ming Chen;Chin H. Chen
中科院分区：
文献类型：
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作者：
Meng‐Huan Ho;Chia-Ming Chang;T. Chu;Teng-Ming Chen;Chin H. Chen
利用空间压缩的概念，通过刚性化的大环，设计合成了一系列基于亚氨基二苄基取代的二苯乙烯基芳撑（IDB系列）荧光染料的高效蓝色材料。空间压缩效应可以缩短分子的有效共轭长度（发色团），并且在核中添加的苯基部分可以减轻分子聚集的倾向。这些材料还具有超过100°C的高玻璃化转变温度。蓝色IDB-Ph器件的最大外量子效率为4.8%，国际照明委员会（CIEx，y）坐标为（0.16，0.28）。应用于二元白色OLED系统时，IDB-Ph掺杂器件的发光效率为11.0 cd/A，CIEx，ycolor坐标为（0.29，0.36）。
A series of highly efficient blue materials based on iminodibenzyl-substituted distyrylarylene (IDB-series) fluorescent dyes using the concept of steric-compression have been designed and synthesized by means of a rigidized and over-sized ring. The steric-compression effect can shorten the effective conjugation length (chromophore) of the molecule and the added phenyl moiety in the core can alleviate the propensity for molecular aggregation. These materials also possess high glass transition temperature over 100°C. The blue IDB-Ph device achieved a maximum external quantum efficiency of 4.8% with a Commission Internationale de l’Eclairage (CIEx,y) coordinate of (0.16,0.28). When applied in two-element white OLED system, the IDB-Ph doped device achieved a luminance efficiency of 11.0cd/A with a CIEx,ycolor coordinate of (0.29,0.36).