In last two decades the study of metal complexes with polymer ligands has been of great interest to chemists as they exhibit many interesting characteristics such as improved thermal stability, hardness, antimicrobial properties and catalytic activities, which are different from that of the corresponding ordinary metal complexes (where small group of atoms act as ligands) of low molecular weight. This has lead to the development of highly efficient catalysts, more effective antimicrobial, thermally stable, mechanically strong, biocompatible and hence eco-friendly polymers.