1. Aurel Vlaicu University of Arad, 310130 Arad, Romania
2. National
Institute
for Research and Development in Electrochemistry and Condensed Matter, 300569 Timisoara, Romania
3. West University of Timisoara, 300223 Timisoara, Romania
4. Department
of Pharmacy, Victor Babes University of Medicine and Pharmacy, 300041 Timisoara, Romania
5. Department
of Chemistry and Biochemistry, University of Zagreb Medical School, HR−10000 Zagreb, Croatia
6. Department
of Chemistry, Indiana University, Bloomington, Indiana 47405, United States