Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
Chemistry Department, TU Kaiserslautern and Research Center Optimas, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany.
Dalton Trans. 2019 Nov 7;48(41):15687-15698. doi: 10.1039/c9dt02447f. Epub 2019 Sep 16.
Luminescent Cu(i) AlkylPyrPhos complexes with a butterfly-shaped CuI core and halogen containing ancillary ligands, with a special focus on fluorine, have been investigated in this study. These complexes show extremely high solubilities and a remarkable (photo)chemical stability in a series of solvents. A tunable emission resulting from thermally activated delayed fluorescence with high quantum yields was determined by luminescence and lifetime investigations in solvents and solids. Structures of the electronic ground states were analyzed by single crystal X-ray analysis. The structure of the lowest excited triplet state was determined by transient FTIR spectroscopy, in combination with quantum chemical calculations. With the obtained range of compounds we address the key requirement for the production of organic light emitting diodes based on solution processing.
在这项研究中，我们研究了具有蝴蝶形 CuI 核和卤素辅助配体的发光 Cu(i) 烷基吡啶膦配合物，特别关注氟。这些配合物在一系列溶剂中表现出极高的溶解度和显著的（光）化学稳定性。通过在溶剂和固体中的发光和寿命研究，确定了热激活延迟荧光产生的可调发射，具有高量子产率。通过单晶 X 射线分析分析了电子基态的结构。通过瞬态傅里叶变换红外光谱与量子化学计算相结合，确定了最低激发三重态的结构。通过获得的一系列化合物，我们满足了基于溶液处理的有机发光二极管生产的关键要求。
