Circularly Polarized Phosphorescent Electroluminescence from Chiral Cationic Iridium(III) Isocyanide Complexes,Advanced Optical Materials

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Circularly Polarized Phosphorescent Electroluminescence from Chiral Cationic Iridium(III) Isocyanide Complexes
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2017-08-30 , DOI: 10.1002/adom.201700359
Jianmei Han ₁ , Song Guo ₁ , Jiong Wang ₁ , Liuwei Wei ₁ , Yanling Zhuang ₁ , Shujuan Liu ₁ , Qiang Zhao ₁ , Xinwen Zhang ₁ , Wei Huang _{1,

2,

3}

Affiliation

Circularly polarized organic light‐emitting diodes (CP‐OLEDs), which directly emit CP light from organic light‐emitting diodes, have attracted considerable attention because of their wide applications in various photonic devices. In this work, a pair of chiral bis‐cyclometalated phosphorescent iridium(III) isocyanide complexes is designed and synthesized, which exhibits almost the same photophysical properties and obvious mirror image in circular dichroism spectrum. These two complexes are used for fabricating CP‐OLEDs, obtaining 4473 cd m⁻², 7.50 cd A⁻¹, and 2.55 lm W⁻¹ for the maximum luminance and the maximum current and power efficiencies, respectively. In addition, the dissymmetry g_EL factors of CP emission are in the order of 10⁻³, which is the highest value among the reported devices based on phosphorescent Ir(III) complexes. The results demonstrate that the chiral Ir(III) complexes are of great potential value for application in CP‐OLEDs.

中文翻译：

手性阳离子铱（III）异氰酸酯配合物的圆偏振磷光电致发光

圆偏振有机发光二极管（CP-OLED）直接从有机发光二极管发出CP光，由于其在各种光子器件中的广泛应用，引起了相当大的关注。在这项工作中，设计并合成了一对手性双环金属化磷光铱（III）异氰化物配合物，它们在圆二色性光谱中表现出几乎相同的光物理性质和明显的镜像。这两种复合物被用于制造CP-OLED中，获得4473 CD米^-2，7.50光盘^-1，和2.55流明w ^ ^-1为分别的最大亮度和最大电流和功率效率。另外，不对称g _ELCP发射的因子约为10 ^-3，是所报道的基于磷光Ir（III）配合物的器件中的最高值。结果表明，手性Ir（III）配合物在CP-OLED中的应用具有巨大的潜在价值。

更新日期：2017-08-30

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