1. Molecular Modeling Division, Center of Excellence in Polymer Science, Karnatak University, Dharwad, India 580 003, Organic Coatings and Polymers Division, Indian Institute of Chemical Technology, Hyderabad, India 500 007 Catalysis Division, National Chemical Laboratory, Pune, India 411 008, and Department of Chemical Engineering and Chemical Technology, 128 ACE Extension, South Kensington Campus, Imperial College, United Kingdom