1. Department of Chemistry, Koneru Lakshmaiah Education Foundation, Hyderabad, India
2. Department of Chemistry, Birla Institute of Technology & Science, Zuarinagar, Goa, India
3. School of Physics and Physical Engineering, Qufu Normal University, Qufu, People's Republic of China
4. Department of Chemistry, and Chemistry Center, University of Coimbra, Coimbra, Portugal