We have disclosed the photophysical and electroluminescent properties of a series of hetero-annulated Ï-conjugated dithieno[3,2-b:2â²,3â²-d]metallole derivatives incorporating Ge, Si, P, and S atoms as a bridging center. The influence of the hetero-annulated structures on their photophysical properties has been investigated systematically by UV/vis and photoluminescence (PL) spectroscopy, transient PL measurements, and DFT calculations. All these compounds show bright fluorescence with high quantum yields both in solutions and in doped thin films with a host matrix. Furthermore, the OLEDs employing the dithienometallole emitters exhibit high external quantum efficiencies of â¼6% at a practical brightness.
我们已公开了一系列包含Ge、Si、P和S原子作为桥连中心的双环[3,2-b:2',3'-d]
金属啉衍
生物的异芳环化Ï-共轭体系的荧光光物理性质和电致发光性质。通过紫外/可见光谱、荧光光谱、瞬态荧光测量和密度泛函理论计算,系统地研究了异芳环化结构对其光物理性质的影响。所有这些化合物在溶液和掺杂的薄膜中都表现出明亮的荧光和高量子产率。此外,采用双
噻吩金属啉发射体的OLEDs在实际亮度下表现出高达约6%的外部量子效率。