Date of Award
Doctor of Philosophy
In the first chapter, a brief background in the formation of reverse micelles and their applications was presented, followed by the formation and applications of interfacially crossed-linked reverse micelles(ICRM) in catalysis. In the second chapter, self-assembly of proline surfactants and its application in aldol reaction were discussed. Prolinamide-functionalized surfactants catalyzed aldol reaction in a nonpolar solvent in the reverse-micelle form. The reverse micelle nanostructure creates a high local concentration of prolinamide, which catalyzes aldol reaction co-operatively. In polar DMSO, the surfactants exist as individual molecules and lose their catalytic activity. In the third chapter, hydrophilic dyes were trapped in the core of the ICRM to help understand the micropolarity of the ICRM. In the fourth chapter, the site isolation of catalysts by ICRM was demonstrated for manganese porphyrins that are known to dimerize and deactivate. ICRM-entrapped catalysts showed enhanced catalytic activity than their free counterparts. In the fifth chapter, the advantage of ICRM over uncross-linked reverse micelle and its selectivity towards hydrophilic substrates were demonstrated by trapping PtCl2(TPPTS)2 in the core of the ICRM. This catalyst was used to catalyze hydration of alkynes. Since water is a reactant and can be concentrated in the core of the ICRM, the catalyst showed enhanced catalytic activity and selectivity towards hydrophilic substrates.
Premkumar Rathinam Arivalagan
Rathinam Arivalagan, Premkumar, "Reverse micelles: Functionalizing, cross-linking, entrapment and applications" (2016). Graduate Theses and Dissertations. 16000.