1. Department of Inorganic and Analytical Chemistry, University of Debrecen, Faculty of Science and Technology, 4032 Debrecen, Egyetem tér 1, Hungary, Fax: +36‐52‐518660
2. Department of Colloid and Environmental Chemistry, University of Debrecen, 4032 Debrecen, Egyetem tér 1, Hungary
3. Department of Chemistry, Szent István University, 1078 Budapest, István út 2, Hungary
4. Ecole Polytechnique Fédérale de Lausanne, BCH, 1015 Lausanne, Switzerland
5. Centre de Biophysique Moléculaire, CNRS, Rue Charles‐Sadron, 45071 Orléans, France