1. Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, India
2. Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, India
3. Department of Chemistry, Deen Dayal Upadhyay Gorakhpur University, Gorakhpur, India
4. Centre for Nano and Soft Matter Sciences, Jalahalli, Bangalore, India