Electronic gadgets and drugs based on heterocycles are commonly used in daily lives. Therefore, the book explores the materials based on oxadiazoles behind drugs and devices to stimulate their further development. As a favorable acceptor, oxadiazoles quantum efficiency can be tuned with functional group engineering incorporated using a suitable synthetic strategy. The book encompasses the significance and practical applications of oxadiazoles in OLEDs, imaging agents, liquid crystals, and electroluminescence. It also covers the therapeutic effect of oxadiazoles in cancer, inflammation, inhibition, and neurodegeneration. The book includes a comprehensive account of various phenomena that makes oxadiazole-based materials suitable for diverse applications