1. PG and Research Department of Chemistry, Presidency College, Chennai 600005, Tamil Nadu, India
2. Department of Chemistry, Bharath Institute of Higher Education and Research, Bharath University, Chennai 600073, Tamil Nadu, India
3. PG and Research Department of Chemistry, Rajah Serfoji Government College, Thanjavur 613005, Tamil Nadu, India
4. Department of Physics, A.V.V.M Sri Pushpam College, Poondi, Thanjavur 613503, Tamil Nadu, India