Effect of Aromatic Ring Number and Substituent Arrangement on the Properties of Phenanthro9,10-dimidazole Derivatives for OLEDs

Key Points

• The research aims to explore how the number and arrangement of aromatic rings affect the properties of phenanthro[9,10-d]imidazole derivatives for organic light-emitting diodes (OLEDs).
• Synthesis of ten phenanthro[9,10-d]imidazole derivatives with varying C2 substituents.
• Analysis of the relationship between the structure of derivatives and their OLED properties.
• Findings indicate that both the number and arrangement of aromatic rings significantly influence the photophysical properties of the derivatives.
• Certain substituent arrangements resulted in improved OLED performance metrics.