Diamantane Compound for OLED Drive Voltage and Efficiency

The patent applies parameter changes by modifying the molecular structure of organic electroluminescent device materials. Specifically, it introduces compounds with diamantane skeletons and various aromatic groups (such as phenyl, naphthyl, carbazole, and triphenylamine groups) to change the electronic and optical parameters of the material, thereby achieving lower drive voltage and higher luminous efficiency

The patent employs composite materials by combining diamantane core structures with multiple types of aromatic functional groups. The compound formulas show composite structures where diamantane is bonded with aromatic hydrocarbon groups, heteroaromatic groups, or their combinations, creating materials with optimized charge transport and light emission properties

The patent achieves universality by designing diamantane-based compounds that can function in multiple roles within organic electroluminescent devices. The compounds can serve as host materials, guest materials, or charge transport materials depending on the device configuration, enabling broad application across different device types and operating conditions

The patent applies local quality by introducing specific functional groups at particular positions on the diamantane skeleton. The substitution patterns (mono-substitution, di-substitution, tri-substitution) and the choice of aromatic groups at specific locations allow optimization of local electronic properties to achieve desired overall device performance