1. Institute for Materials Research (IMO) Hasselt University Agoralaan Diepenbeek 3590 Belgium
2. IMEC Associated Lab IMOMEC Wetenschapspark 1 Diepenbeek 3590 Belgium
3. Vrije Universiteit Brussel Physical Chemistry and Polymer Science Pleinlaan 2 Brussels 1050 Belgium
4. University of Namur Laboratory of Theoretical Chemistry Theoretical and Structural Physical Chemistry Unit Namur Institute of Structured Matter Rue de Bruxelles 61 Namur 5000 Belgium