5,5'-dihydroxy-2,2'-bipyridine is primarily utilized in coordination chemistry as a ligand for forming metal complexes. Its ability to bind with metal ions makes it valuable in the development of catalysts for organic synthesis and polymerization reactions. The compound is also employed in the design of luminescent materials, where it contributes to the photophysical properties of metal-organic frameworks (MOFs) and other coordination polymers. Additionally, it finds application in supramolecular chemistry for constructing molecular assemblies and sensors due to its hydrogen bonding and metal coordination capabilities. In materials science, it is used to create functional materials with specific electronic or optical properties. Its role in stabilizing metal centers and facilitating electron transfer processes makes it relevant in electrochemical applications, including energy storage and conversion systems.