**4. Conclusions and future perspective**

The Ru(bpy)3 2+ and its derivatives play a crucial role in the development of ECL based sensor devices. Due to its chemical stability, confined electrochemical behaviour, and high ECL quantum efficiency, Ru(bpy)3 2+ complex acts as one of the best model luminophores. The variety of ECL experiments were studied by using different forms of Ru(bpy)3 2+ like Ru-chelates, doped nanoparticles-Ru(bpy)3 2+ and polymer-Ru(bpy)3 2+ complex and used as an ECL label in detecting the immunoassays, DNA detection, aptamer sensing, bio-imaging, and metal ion sensing. The dynamic and progressive ECL of Ru(bpy)3 2+ also offers to use it as a sensing probe in point-of-care testing devices such as portable ECL sensor devices, wireless ECL kits, paper-based microfluidic ECL devices, and bipolar ECL devices. Moreover, these kinds of ECL-based sensor kit will extent to the development of sensing of food adulterants to detect the toxic, hazardous and harmful compounds in food. In near future, the fabrication of Ru(bpy)3 2+ based ECL sensor kits will be useful in various clinical diagnostic applications, pharmaceutical, and other point-of-care applications.

*Ruthenium-Tris-Bipyridine Derivatives as a Divine Complex for Electrochemiluminescence… DOI: http://dx.doi.org/10.5772/intechopen.96819*
