In one aspect, compositions comprising emissive compounds including polycyclic aromatic groups are provided. In some embodiments, the emissive compounds may include various moieties having desirable physical and electronic properties. In some embodiments, the compositions may be useful for use in, for example, organic light-emitting diodes (OLEDs), chemical sensors, organic photovoltaics, and other devices. An advantageous feature of some embodiments described herein is the ability to tune the electronic properties of the compositions in order to suit a particular application. For example, compositions comprising emissive compounds described herein may exhibit thermally activated delayed fluorescence (TADF) and may be useful as emissive chromophores in e.g., OLED devices. In other cases, the compositions may exhibit high-lying triplet states and may be able to trap various triplet emitters, for use as e.g., host materials for OLED devices. In some cases, the composition may also be readily soluble and processible, and exhibit excellent thermal stability.
在一个方面,提供了包含发光化合物的组合物,其中包括多环芳香基团。在一些实施例中,这些发光化合物可能包括具有理想物理和电子性质的各种基团。在一些实施例中,这些组合物可能适用于用于有机发光二极管(OLED)、
化学传感器、有机光伏和其他设备。这里描述的一些实施例的一个优势特征是能够调节组合物的电子性质,以适应特定的应用。例如,包括这里描述的发光化合物的组合物可能表现出热激活延迟荧光(TADF),并且可能作为发光色团在例如OLED设备中有用。在其他情况下,这些组合物可能表现出高能三重态,并且可能能够捕获各种三重态发射体,用作例如OLED设备的主体材料。在一些情况下,这些组合物也可能具有良好的溶解性和加工性,并表现出优异的热稳定性。