1. Department of Supramolecular and Biomaterials Chemistry Leiden Institute of Chemistry Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
2. Division of Drug Discovery and Safety Leiden Academic Centre for Drug Research Leiden University P.O. Box 9502 Leiden 2300 RA Netherlands
3. Department of Physics Huygens‐Kamerlingh Onnes Laboratory Leiden University Leiden 2300 RA Netherlands
4. Fraunhofer Institute for Silicate Research ISC Neunerplatz 2 Würzburg 97082 Germany