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首页> 外文期刊>Chemistry: A European journal >Rationally Designed Blue Triplet Emitting Gold(III) Complexes Based on a Phenylpyridine-Derived Framework
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Rationally Designed Blue Triplet Emitting Gold(III) Complexes Based on a Phenylpyridine-Derived Framework

机译：基于苯基吡啶衍生框架的合理设计的蓝色三联络合物（III）复合物

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摘要

A series of blue-emitting phosphorescent monocyclometalated Au~(III) complexes have been successfully synthesized. Tailoring the substitutions on the phenylpyridine (ppy) ligand scaffold with electron-withdrawing fluorine groups on the phenyl ring to achieve stabilization of the HOMO and an electron-donating dimethylamino group on the pyridine ring to destabilize the LUMO resulted in a large energy gap and bestowed on the gold(III) complexes highenergy emission and high quantum efficiencies. The results of cyclic voltammetry studies suggested a predominantly redox event localized on the cyclometalated ligand. Thermogravimetric analysis of selected complexes revealed a high stability up to 280 °C, thus the complexes are suitable for device fabrication through vacuum-deposition. Photophysical investigations performed on all the derivatives revealed phosphorescence emission in neat solid, solution, doped in poly(methyl methacrylate) (PMMA) films at room temperature as well as in rigidified glass media (2-MeTHF) at 77 K. A high photoluminescent quantum efficiency of 28% was obtained for a complex in PMMA, the highest quantum yield reported for a blue-emitting gold(III) complex.
机译：已经成功地合成了一系列蓝色发光磷光单键素Au〜（III）配合物。用苯环上取代苯基吡啶（PPY）配体支架上的取代，以在苯基环上取代吡啶环上的稳定化，以使吡啶环上的电子将二甲基氨基稳定，以使LUMO失去稳定，导致大型能量隙和赋予在黄金（III）复合物高度发射和高量子效率。循环伏安学研究的结果表明，主要的氧化还原事件局存在环级配体上。所选配合物的热重分析显示出高达280℃的高稳定性，因此复合物适用于通过真空沉积制造的装置制造。对所有衍生物进行的光药研究显示纯固体中的磷光发射，在室温下在室温下掺杂在聚（甲基丙烯酸甲酯）（PMMA）膜中的溶液以及77k处的刚性玻璃介质（2-甲基）。高光致发光量子在PMMA中综合获得28％的效率，为蓝色发光金（III）复合物报告的最高量子产率。

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