His research interest includes the development of new polymers for low-k applications, membrane materials for gas and liquid separation, proton exchange membrane materials for fuel cells and polymers for photovoltaic and optoelectronic applications. His research work has resolved many of the key issues in membrane based separation and he has successfully demonstrated new polymers that showed both high permeability and selectivity. His work has given a new direction in developing high proton conductive membranes for fuel cell application.