1. Advanced Molecular Materials Research Centre, Mahatma Gandhi University, Kottayam, 686 560, Kerala, India
2. School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, 686 560, Kerala, India
3. Department of Chemistry, Kottayam CMS College (Autonomous) – affiliated to Mahatma Gandhi University, Kottayam, 686 001, Kerala, India
4. Dept. of Mechanical Engineering, Ramaiah Institute of Technology, Bangalore, 560 054, India