1. “Petru Poni” Institute of Macromolecular Chemistry; 700487 Iasi Romania
2. School of Engineering and Science; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
3. Laboratoire de Physicochimie des Polymères et des Interfaces (EA 2528); Institut des Matériaux; Université de Cergy-Pontoise; 5 mail Gay-Lussac 95031 Cergy-Pontoise Cedex France