Luminescent Nanothermometers Obtained by Post-Synthetic Modification of Metal-Organic Framework MIL-68

authors	Abdelhameed, RM; Ananias, D; Silva, AMS; Rocha, J
nationality	International
journal	EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
author keywords	Metal-organic frameworks; Lanthanides; Post-synthetic modification; Luminescent thermometry
keywords	HYDROGEN
abstract	Metal-organic frameworks (MOFs) bearing lanthanide ions are excellent platforms for designing luminescent thermometers. However, so far, post-synthetic modification of MOFs linkers has not been explored as a route to produce such thermometers, despite its potential to design the lanthanide coordination sphere and, thus, tune the emission properties of the material. Here, nanocrystals of MIL-68-NH2 were post-synthetically modified via a cross-linking reaction with 1,4-Bis{4-[(E)-3-(N,N-dimethylamino)prop-2-enoyl]phenoxy}butane (HL), followed by coordination to Eu3+ and Tb3+ ions. The luminescence properties of the material were assessed. Tb90Eu10-MIL-68-HL was found to be an excellent cryogenic (< 100 K) ratiometric luminescent nanothermometer exhibiting a maximum relative sensitivity of 9.4 % K-1 at 12 K.
publisher	WILEY-V C H VERLAG GMBH
issn	1434-1948
isbn	1099-0682
year published	2019
issue	10
beginning page	1354
ending page	1359
digital object identifier (doi)	10.1002/ejic.201900110
web of science category	Chemistry, Inorganic & Nuclear
subject category	Chemistry
unique article identifier	WOS:000461218300007