**Author details**

Maria Butnaru, Doina Macocinsch and Valeria Harabagiu *"Petru Poni" Institute of Macromolecular Chemistry, Iasi, Romania* 

Maria Butnaru, Ovidiu Bredetean, Cristina Daniela Dimitriu and Laura Knieling *"Grigore T. Popa " University of Medicine and Pharmacy, Iasi, Romania* 
