1. CIQUP/IMS, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, Rua do Campo Alegre 687, s/n, Porto 4169-007, Portugal
2. INESC TEC−Institute for Systems and Computer Engineering, Technology and Science, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
3. Department of Physics and Astronomy, Faculty of Sciences, University of Porto, Rua do Campo Alegre 687, s/n, Porto 4169-007, Portugal