1. Department of Chemistry and Pharmacy & Interdisciplinary Center for Molecular Materials Friedrich‐Alexander University Erlangen‐Nürnberg Egerlandstrasse 3 91058 Erlangen Germany
2. Centre for Advanced Materials Ruprecht‐Karls‐University Heidelberg Im Neuenheimer Feld 225 69120 Heidelberg Germany
3. Institute of Particle Technology & Interdisciplinary Center of Functional Particle Systems Friedrich‐Alexander University Erlangen‐Nürnberg Cauerstrasse 4 91058 Erlangen Germany