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首页> 外文期刊>Advanced Functional Materials >Control Of Charge Transport In Iridium(Ⅲ) Complex-cored Carbazole Dendrimers By Generation And Structural Modification
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Control Of Charge Transport In Iridium(Ⅲ) Complex-cored Carbazole Dendrimers By Generation And Structural Modification

机译：铱（Ⅲ）配合物咔唑树枝状大分子的生成和结构改性控制电荷迁移

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摘要

Here, the charge transporting properties of a family of highly phosphorescent iridium(Ⅲ) complex-cored carbazole dendrimers designed to have improved charge transport by incorporating carbazole units into the dendrons are studied. Firstly, the effect of the dendrimer generation and the role of dendron for materials with one dendron per ligand of the core are considered. It is shown, in contrast to previously reported light-emitting dendrimers, that in this case the carbazolyl-based dendrons have an active role in charge transport. Next, the effect on the charge transport of attaching two dendrons per ligand to the dendrimer core is explored. In this latter case, for the so called "double dendron" material a highly non-dispersive charge transport behavior is observed, together with a time-of-flight mobility of the order of 10~(-3)cm~2 V~(-1)s~(-1). Furthermore the lowest energetic disorder parameter (σ) ever reported for a solution-processed conjugated organic material is found, σ< 20 meV.
机译：在此，研究了通过将咔唑单元并入树枝状结构来改善电荷传输的高磷光铱（Ⅲ）络合芯咔唑树枝状聚合物的电荷传输性能。首先，考虑了树枝状聚合物生成的影响和树枝状分子对于每个核配体具有一个树枝状分子的材料的作用。与以前报道的发光树枝状聚合物相反，在这种情况下，表明基于咔唑基的树枝状分子在电荷传输中起积极作用。接下来，研究对每个配体将两个树枝状分子连接至树枝状聚合物核心的电荷传输的影响。在后一种情况下，对于所谓的“双树枝状”材料，观察到高度非分散的电荷传输行为，以及飞行时间迁移率约为10〜（-3）cm〜2 V〜（ -1）s〜（-1）。此外，发现有史以来报道的溶液加工的共轭有机材料的最低能级紊乱参数（σ），σ<20 meV。

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