Spiro[adamantane-2,9'-fluorene] is widely utilized in the development of organic light-emitting diodes (OLEDs) due to its excellent thermal stability and efficient charge transport properties. Its rigid spiro structure helps in reducing molecular aggregation, which enhances the performance and longevity of OLED devices. Additionally, this compound is employed in the synthesis of advanced materials for optoelectronic applications, including photovoltaics and sensors, where its unique electronic properties are highly beneficial. Its ability to form stable thin films makes it a preferred choice in the fabrication of high-performance electronic and photonic devices.