1. Department of General Chemistry, University Politehnica Bucharest, 1-7 Gheorghe Polizu Sector 1, 011061 Bucharest, Romania
2. Department of Bioresources and Polymer Science, University Politehnica Bucharest, 1-7 Gheorghe Polizu Sector 1, 011061 Bucharest, Romania
3. Centre for Organic Chemistry Costin D. Nenitescu, Romanian Academy, 202B Splaiul Independentei, CP 35-108, 060023 Bucharest, Romania
4. Institute of Macromolecular Chemistry “Petru Poni” Iasi, 41A Aleea Grigore Ghica Voda, 700487 Iasi, Romania