1. Department of Chemistry, University Institute of Science, Chandigarh University, Mohali, Punjab-140 413, India
2. Department of Chemistry, Centre of Advanced Studies in Chemistry, Panjab University, Chandigarh-160 014, India
3. Department of UCRD, Chandigarh University, Gharuan, Mohali, Punjab-140 413, India
4. Department of Electrical and Biomedical Engineering, University of Nevada, Reno, NV 89557, USA