1. Department of Chemistry, KU Leuven (University of Leuven), Celestijnenlaan 200 F, Heverlee 3001, Belgium
2. IMEC, Kapeldreef 75, Leuven 3001, Belgium
3. Department of Chemistry, University of Antwerp, Campus Drie Eiken, Universiteitsplein 1, Wilrijk 2610, Belgium
4. ETSF European Theoretical Spectroscopy Facility, Institut de Physique, Université de Liège, Allée du 6 août 17, Liège 4000, Belgium