4,6-Diphenylpyrimidine is primarily utilized in the field of organic electronics due to its excellent electron-transporting properties. It is commonly employed as a key component in the fabrication of organic light-emitting diodes (OLEDs), where it enhances device efficiency and stability. The compound is also used in the development of organic field-effect transistors (OFETs) and photovoltaic cells, contributing to improved charge carrier mobility and energy conversion efficiency. Additionally, its structural framework makes it a valuable intermediate in the synthesis of various pharmaceuticals and agrochemicals, particularly in the design of compounds with potential antiviral and anticancer activities. In materials science, it serves as a building block for creating advanced polymers and coatings with tailored optical and electronic properties.