1. Department of Organic Chemistry; Ghent University; Krijgslaan 281 S4-bis B-9000 Ghent Belgium
2. Department of Pharmaceutics, Laboratory of Pharmaceutical Technology; Ghent University; Harelbekestraat 72 B-9000 Ghent Belgium
3. Lodz University of Technology, Institute of Polymer and Dye Technology; Stefanowskiego 12/16 90 924 Lodz Poland