1. Bio-Inspired Polymeric Materials Lab, Department of Chemistry Indian Institute of Technology-Guwahati Kamrup Assam 781039 India
2. Department of Chemical and Biochemical Engineering The Ohio State University Columbus Ohio 43210 USA
3. Department of Chemistry DST Unit of Nanoscience (DST UNS) and Thematic Unit of Excellence (TUE) Indian Institute of Technology Madras Chennai 600036 India
4. Centre for Nanotechnology Indian Institute of Technology-Guwahati Kamrup Assam 781039 India