1. Faculty of Engineering and Natural Sciences, Tampere University, Korkeakoulunkatu 8, 33101 Tampere, Finland
2. Department of Chemistry, University of Jyväskylä, P.O. Box 35, 40014 Jyväskylä, Finland
3. LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal