1. Department of Chemistry, Indian Institute of Technology Guwahati, Amingaon, Kamrup, Assam 781039, India
2. Biomaterial and Tissue Engineering Laboratory, Department of Biosciences and Bioengineering, Indian Institute of Technology Guwahati, Amingaon, Kamrup, Assam 781039, India
3. Centre for Nanotechnology, Indian Institute of Technology Guwahati, Amingaon, Kamrup, Assam 781039, India