1. Research Center for Macromolecular Materials and Membranes, Splaiul Independentei 206, Bucharest 79611, Romania
2. Polytechnic University of Bucharest, Department of Inorganic Chemistry, Polizu Str. 1, Bucharest 79611, Romania
3. University of Bucharest, Department of Inorganic Chemistry, Str. Dumbrava Rosie 23, Bucharest, Romania
4. Università degli Studi, Dipartimento di Chimica, Laboratorio di Chimica Inorganica e Bioinorganica, Via Gino Capponi 7, Florence I-50121, Italy