1. Department of Chemistry and MacDiarmid Institute of Advanced Materials and Nanotechnology University of Otago PO Box 56 Dunedin 9054 New Zealand
2. Department of Chemistry “Ugo Schiff” and INSTM Research Unit University of Florence 50019 Sesto Fiorentino Italy
3. Centre for Theoretical Chemistry and Physics The New Zealand Institute for Advanced Study and the Institute for Natural and Mathematical Sciences Massey University Auckland New Zealand
4. Department of Nanotechnology Helmholtz Centre for Materials and Coastal Research Max-Planck-Straße 1 21502 Geesthacht Germany