1. Ionic Liquids Research Laboratory, Department of Chemistry, Sardar Vallabhbhai National Institute of Technology, Surat-395007, Gujarat, India
2. Department of Biotechnology, Central Research Laboratory, MMES, Maharishi Markedshwar University, Mullana, Haryana-133 207, India
3. Solid State Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai-400085, India