1. Department of Chemistry, University College of Science, University of Calcutta, 92, APC Road, Kolkata-700 009, India
2. Sarojini Naidu College for Women, 30 Jessore Road, Kolkata-700 028, India
3. School of Chemistry, The University of Reading, P.O Box 224, Whiteknights, Reading RG 66AD, U.K.
4. Instituto de Ciencia Molecular (ICMol), Parque Científico, Universidad de Valencia, 46980 Paterna, Valencia, Spain
5. Fundación General de la Universidad de Valencia (FGUV), Valencia, Spain