1. Department of Polymer Science, University of Madras, Maraimalai Campus, Guindy, Chennai-600 025, India
2. Department of Bio-Technology, University of Madras, Maraimalai Campus, Guindy, Chennai-600 025, India
3. Department of Chemistry, Arignar Anna Government Arts College for Women, Walajapet- 632513, Vellore, Tamil Nadu, India