1. Department of Chemistry and Center for NanoScience (CeNS), LMU Munich, Butenandtstraße 11, 81377 Munich, Germany
2. Department of Pharmacy and Center for NanoScience (CeNS), LMU Munich, Butenandtstraße 5-13, 81377 Munich, Germany
3. Institute of Organic Chemistry, Johannes Gutenberg-University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany
4. School of Chemistry, College of Science, University of Lincoln, Brayford Way, Brayford Pool, Lincoln LN6 7TS, United Kingdom