1. School
of Chemistry and Chemical Engineering, The QUILL Research Centre,
David Keir Building, Queen’s University Belfast, Stranmillis
Road, Belfast BT9 5AG, United Kingdom
2. Dutch-Belgian
Beamline (DUBBLE), ESRF - The European Synchrotron, CS 40220, 38043 Grenoble Cedex 9, France
3. Centre
for Nanostructured Media, School of Mathematics and Physics, Queen’s University Belfast, Belfast BT7 1NN, United Kingdom
4. L3 − Luminescent Lanthanide
Lab, Department of Inorganic
and Physical Chemistry, Ghent University, Krijgslaan 281-S3, B-9000 Ghent, Belgium