1. National Research-Development Institute for Chemistry and Petrochemistry-ICECHIM; Bucharest 060021 Romania
2. Department of Bioresources and Polymer Science; University “Politehnica”; Bucharest 010072 Romania
3. Department of Anatomy; Animal Physiology and Biophysics; Faculty of Biology; University of Bucharest; Bucharest 050095 Romania
4. Faculty of Physics; University of Bucharest; Măgurele Ilfov 077125 Romania
5. Institute of Organic Chemistry; Bulgarian Academy of Sciences; 1113 Sofia Bulgaria
6. Department of Chemical Engineering; Technical University; Maslak Istanbul 34469 Turkey