1. Department of Chemistry
2. University of Fribourg
3. CH-1700 Fribourg
4. Switzerland
5. Xiamen Institute of Rare-earth Materials
6. Fribourg Center for Nanomaterials, University of Fribourg
7. Institut des Sciences Moléculaires CNRS UMR5255
8. Univ. Bordeaux
9. 33400 Talence
10. France