“…In catalysis, use of polymers as a capping agent for metal nanoparticles is gaining enormous interest since the polymers help by transforming the reaction system into a homogeneous one by dispersing the nanoparticles in the reaction media. Accordingly, these polymer-coated metal nanoparticles are known as ’quasi-homogeneous’ catalysts. − Due to better dispersion in the reaction medium and easier access to the catalytic surface, the quasi-homogeneous catalysts are catalytically more efficient. , Among the various capping molecules, polymers have several benefits like robust steric stabilization, the ability to alter nanoparticle morphology, and flexibility. , Polypyrrole, − chitosan, − polyaniline, , poly( N -isopropylacrylamide), , polyphenylquinoxalines are some polymers that are used to coat nanoparticles used as a catalyst in several organic reactions. , Presently, there is a need for “green catalysts” that will be effective at room temperature, in an aqueous medium, and easily recoverable and recyclable.…”