Various Structural Design Modifications: <i>para</i>-Substituted Diphenylphosphinopyridine Bridged Cu(I) Complexes in Organic Light-Emitting Diodes
作者:Jasmin M. Busch、Daniil S. Koshelev、Andrey A. Vashchenko、Olaf Fuhr、Martin Nieger、Valentina V. Utochnikova、Stefan Bräse
DOI:10.1021/acs.inorgchem.0c03187
日期:2021.2.15
orbital (LUMO) of the copper complexes of the PyrPhos family was found to be located on the NP-bridging ligand and enabled color tuning in the whole visible spectrum. A multitude of dinuclear Cu(I) complexes based on the triple methylated 2-(bis(4-methylphenyl)phosphino)-4-methylpyridine (Cu-1b-H, Cu-1b-MeO, and Cu-1b-F) up to complexes bearing 2-(bis(4-fluorophenyl)phosphino)pyridine (Cu-6a-H) with electron-withdrawing
由2-(二苯基膦基)吡啶(PyrPhos)衍生物Cu 2 X 2 L 3和Cu 2 X 2 LP 2桥接的双核Cu(I)配合物的众所周知的系统(L =桥接配体,P =辅助配体)伴随着无穷无尽的可变性选项。在这项工作中,研究了取代基和修饰对NP桥联配体的膦部分的影响。在先前的研究中,发现PyrPhos家族的铜络合物的最低未占据分子轨道(LUMO)的位置位于NP桥基配体上,并可以在整个可见光谱范围内进行颜色调整。多种基于三甲基化的2-(双(4-(甲基苯基)膦基)-4-甲基吡啶(Cu-1b-H,Cu-1b-MeO和Cu-1b-F)的双核Cu(I)络合物带有2-(双(4-氟苯基)膦基)吡啶(Cu-6a-H)具有吸电子性氟原子,并且在NP桥接配体上有许多其他变化。通过单晶X射线衍射分析确认了几乎所有的铜络合物。除了电子性质和光物理测量的理论TDDFT研究以外,大多数膦改性的Cu(I)配合物还在具有不