1. COMOC-Center for Ordered Materials, Organometallics and Catalysis Department of Chemistry Ghent University Krijgslaan 281-S3 9000 Ghent Belgium
2. L3-Luminescent Lanthanide Lab. Department of Chemistry Ghent University Krijgslaan 281-S3 9000 Ghent Belgium
3. RWTH Aachen University Central Facility for Electron Microscopy 52074 Aachen Germany
4. Forschungszentrum Jülich GmbH Ernst Ruska-Centre (ER-C 2) 52425 Jülich Germany
5. TJU-NIMS International Collaboration Laboratory School of Materials Science and Engineering Tianjin University No. 92 Weijin Road, Nankai District Tianjin 300072 P. R. China