1. School of Applied and Interdisciplinary Sciences, Indian Association for the Cultivation of Science, Kolkata 700032, India
2. Department of Industrial Chemistry and Swami Vivekananda Research Centre, Ramakrishna Mission Vidyamandira, Belur Math, Howrah 711202, India
3. Macromolecular Chemistry and Institute for Polymer Technology, Wuppertal University, Gauss-Strasse 20, 42119 Wuppertal, Germany