2-(2-Naphthyl)indole is widely utilized in organic synthesis and material science due to its unique structural properties. It serves as a key intermediate in the development of organic light-emitting diodes (OLEDs), where its conjugated system enhances electron mobility and light emission efficiency. Additionally, it is employed in the synthesis of fluorescent dyes and probes for biological imaging, leveraging its strong fluorescence properties. In pharmaceutical research, it acts as a building block for creating compounds with potential therapeutic applications, particularly in cancer treatment and neurodegenerative diseases. Its role in catalysis and as a ligand in coordination chemistry also makes it valuable in industrial chemical processes.