1. International and Interuniversity Centre for Nanoscience and Nanotechnology Mahatma Gandhi University Priyadarshini Hills P.O. Kottayam Kerala 686560 India
2. Department of Basic Science Amal Jyothi College of Engineering Koovapally P.O. Kottayam Kerala 686518 India
3. School of Chemical Sciences Mahatma Gandhi University Kottayam Kerala 686560 India