1. Departement of Chemistry University of Basel St. Johanns‐Ring 19 4056 Basel Switzerland
2. Institute for Nanotechnology (INT) Karlsruhe Institute of Technology (KIT) P. O. Box 3640 76021 Karlsruhe Germany
3. Lehn Institute of Functional Materials (LIFM) Sun Yat‐Sen University (SYSU) Xingang Xi Rd. 135 510275 Guangzhou P. R. China