1. Department of Nanotechnology; Acharya Nagarjuna University; Andhra Pradesh India
2. Polymer Electronics Research Centre, School of Chemical Sciences; University of Auckland; Private Bag 92019 Auckland 1142 New Zealand
3. Université Paris Sud, Polytech' Paris Sud; Departement Materiaux; 13 Rue de la Poterie, 91530 le Val St Germain France
4. MacDiarmid Institute for Advanced Materials and Nanotechnology; New Zealand
5. NMR Centre, School of Chemical Sciences; University of Auckland; Private Bag 92019 Auckland 1142 New Zealand