1. Department of Chemistry, N. S. S. College, Ottapalam, Palakkad, Kerala, India, College of Mechanical and Electrical Engineering and College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, China, Rubber Research Institute of India, Kottayam, 686009, Kerala, India, and School of Chemical Sciences, Mahatma Gandhi University, Priyadarshini Hills Po, Kottayam 686560, Kerala, India