Affiliation: | 1. Unit for Nano Science and Technology, Department for Chemical, Biological and Macromolecular Sciences, S.N. Bose National Centre for Basic Sciences, Block JD, Sector III, Salt Lake, Kolkata 700098 (India);2. Institute for Condensed Matter Physics, TU Braunschweig, Mendelssohnstr. 3, 38106 Braunschweig (Germany);3. Fakult?t für Chemie, Universit?t Bielefeld, Postfach 100131, 33501 Bielefeld (Germany) |