1. Department of Chemistry, Sri Indu College of Engineering and Technology (Autonomous), Sheriguda (V), Hyderabad - 501510, Telangana, India.
2. Department of Chemistry, Swami Dayananda College of Arts and Science, Manjakkudi, 612610 (Affiliated to Bharthidasan University), Tamil Nadu, India.
3. Department of Physics, Sri Indu College of Engineering and Technology (Autonomous), Sheriguda (V), Hyderabad-501510, Telangana, India.