1. Applied Chemistry Department, Sardar Vallabhbhai National Institute of Technology (SVNIT), Ichchhanath, Surat 395 007, Gujarat, India
2. Maliba Pharmacy College, UKA Tarsadia University (UTU), Gopal-Vidyanagar Campus, Surat 394 350, Gujarat, India
3. Solid State Physics Division, Bhabha Atomic Research Centre (BARC), Trombay, Mumbai 400 085, Maharashtra, India
4. Department of Chemistry, Veer Narmad South Gujarat University (VNSGU), Udhana-Magdalla Road, Surat 395 007, Gujarat, India