1. Department of Chemistry, Ewing Christian College, University of Allahabad, Prayagraj 211003, India
2. Centre of Material Sciences, University of Allahabad, Prayagraj 211002, India
3. Department of Physics, Ewing Christian College, University of Allahabad, Prayagraj 211003, India
4. Department of Applied Sciences and Chemistry, Military University of Technology, Warsaw 00-908, Poland