1. Department of Chemistry, Jayaraj Annapackiam College for Women (Autonomous), Periyakulam, Theni Dt. 625 601, Tamil Nadu, India
2. Department of Chemistry, Saraswathy Narayanan College, Madurai 625022, Tamil Nadu, India
3. School of Chemistry, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India