1. Department for Earth and Environmental Sciences and Center for NanoScience, Ludwig-Maximilians-Universität, Theresienstrasse 41, 80333 München, Germany
2. Technical University Munich, TUM School of Education, Schellingstrasse 33, 80799 München, Germany
3. Center of Micro and Nanochemistry and Engineering, Organische Chemie I, Universität Siegen, Adolf-Reichwein-Strasse 2, 57068 Siegen, Germany
4. Deutsches Museum, Museumsinsel 1, 80538 München, Germany