Tris(1,10-phenanthroline-5,6-dione)ruthenium(II) bis is widely used in electrochemical and photochemical applications due to its unique redox properties and light absorption characteristics. It serves as a key component in dye-sensitized solar cells (DSSCs), where it acts as a photosensitizer to convert sunlight into electrical energy efficiently. Additionally, its luminescent properties make it valuable in optoelectronic devices and as a probe in biological imaging studies. The compound is also employed in catalysis, particularly in oxidation reactions, where it facilitates the transfer of electrons under mild conditions. Its stability and reactivity further make it a candidate for use in advanced materials research and development.