1. Department of Chemistry, Sri Venkateswara University, Tirupati, India
2. Department of Chemistry, Dravidian University, Kuppam, India
3. Department of Chemistry, Jawaharlal Nehru Technological University, Ananthapur, India
4. DST-PURSE Centre, Sri Venkateswara University, Tirupati, India
5. Department of Bio-Chemistry, Sri Venkateswara University, Tirupati, India