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首页> 外文期刊>Dalton transactions: An international journal of inorganic chemistry >Photo- and electro-luminescence of four cuprous complexes with sterically demanding and hole transmitting diimine ligands
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Photo- and electro-luminescence of four cuprous complexes with sterically demanding and hole transmitting diimine ligands

机译：具有空间要求和空穴传输二亚胺配体的四种亚铜配合物的光致和电致发光

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摘要

Four new cuprous complexes (1-4) containing bisphosphine and triazolylpyridine donors have been prepared in order to examine the effects of the methyl group and the carbazole appendage on photo- and electro-luminescence (PL and EL) properties. Because of their additional steric hindrance from the methyl substituent group at a 6-pyridine ring, complexes 3 and 4, compared with the methyl group free compounds 1 and 2, expectedly exhibit largely spectral blue shift and higher intensity both in PL and EL. Meanwhile, the carbazole appendage of complexes 2 and 4 does not significantly alter their PL performance in comparison with 1 and 3, respectively, but have a modest increase in their EL efficiency in multilayer organic light-emitting diodes (OLEDs). Moreover, the OLED with 4 as the light emitting material has the highest current efficiency (CEmax) of 27.2 cd A(-1) and the maximum external quantum efficiency (EQE(max)) of 8.7%.
机译：为了检查甲基和咔唑附件对光致发光和电致发光（PL和EL）性质的影响，已制备了四个新的含双膦和三唑基吡啶供体的亚铜配合物（1-4）。由于它们在6-吡啶环上来自甲基取代基的额外空间位阻，因此与不含甲基的化合物1和2相比，配合物3和4预期在PL和EL中均显示出很大的光谱蓝移和更高的强度。同时，配合物2和4的咔唑附属物分别与1和3相比没有显着改变其PL性能，但是在多层有机发光二极管（OLED）中其EL效率适度增加。此外，具有4作为发光材料的OLED具有27.2 cd A（-1）的最高电流效率（CEmax）和8.7％的最大外部量子效率（EQE（max））。

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