1. Department of Chemistry, Guru Ghasidas Vishwavidyalaya, Koni, Bilaspur, C.G. 495009, India
2. Department of Pure and Applied Physics, Guru Ghasidas Vishwavidyalaya, Koni, Bilaspur, C.G. 495009, India
3. Department of Chemistry, National Institute of Technology Sikkim, Barfung Block, Ravangla, Sikkim 737139, India
4. Department of Chemistry, The University of South Dakota, 414 E. Clark, Vermillion, South Dakota 57069, United States