1. “Petru Poni” Institute of Macromolecular Chemistry Iasi, Grigore Ghica Voda Al. No. 41A, 700487 Iasi, Romania
2. Department of Chemistry, “Alexandru Ioan Cuza” University of Iasi, Carol I Blvd. No 11, 700506 Iasi, Romania
3. Department of Chemical and Geological Sciences, University of Cagliari, I-09042 Monserrato, Italy
4. Department of Materials and Environmental Chemistry, Division of Physical Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden