1. Department of Chemistry, University of Calcutta, Kolkata 700009, India
2. Center for Phononics and Thermal Energy Science, School of Physics Science and Engineering, Tongji University, Shanghai 200092, People’s Republic of China
3. Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China
4. Department of Chemistry, Presidency University, Kolkata 700073, India
5. Dipartimento di Fisica, Università di Camerino, I-62032 Camerino, Italy