1. Department
of Chemistry, Maharaja Manindra Chandra College, University of Calcutta, Kolkata 700003, India
2. Molecular
Photoscience Research Center, Kobe University, Rokkodaicho 1-1, Nada, Kobe, 657-8501, Japan
3. Department
of Chemistry, Presidency University, Kolkata 700073, India
4. Department of Polymer Science & Technology, University of Calcutta, Kolkata 700009, India