TY - JOUR
T1 - Toward Opto-Structural Correlation to Investigate Luminescence Thermometry in an Organometallic Eu(II) Complex
AU - Diaz-Rodriguez, Roberto M.
AU - Gálico, Diogo A.
AU - Chartrand, Daniel
AU - Suturina, Elizaveta A.
AU - Murugesu, Muralee
N1 - Funding Information:
We thank the Canadian Foundation for Innovation (CFI) and the Natural Sciences and Engineering Research Council of Canada (NSERC) for financial support of this work. We thank Dr. Jeffrey Ovens and the uOttawa X-ray Core Facility, as well as the X-ray Diffraction Laboratory at the Université de Montréal, for access to crystallographic instrumentation and resources. We are thankful to Dr. A. A. Kitos (Murugesu Group) for useful discussions regarding crystallographic refinement.
PY - 2022/1/19
Y1 - 2022/1/19
N2 - Lanthanide-based luminescent materials have unique properties and are well-studied for many potential applications. In particular, the characteristic 5d → 4f emission of divalent lanthanide ions such as EuII allows for tunability of the emissive properties via modulation of the coordination environment. We report the synthesis and photoluminescence investigation of pentamethylcyclopentadienyleuropium(II) tetrahydroborate bis(tetrahydrofuran) dimer (1), the first example of an organometallic, discrete molecular EuII band-shift luminescence thermometer. Complex 1 exhibits an absolute sensitivity of 8.2 cm–1 K–1 at 320 K, the highest thus far observed for a lanthanide-based band-shift thermometer. Opto-structural correlation via variable-temperature single-crystal X-ray diffraction and fluorescence spectroscopy allows rationalization of the remarkable thermometric luminescence of complex 1 and reveals the significant potential of molecular EuII compounds in luminescence thermometry.
AB - Lanthanide-based luminescent materials have unique properties and are well-studied for many potential applications. In particular, the characteristic 5d → 4f emission of divalent lanthanide ions such as EuII allows for tunability of the emissive properties via modulation of the coordination environment. We report the synthesis and photoluminescence investigation of pentamethylcyclopentadienyleuropium(II) tetrahydroborate bis(tetrahydrofuran) dimer (1), the first example of an organometallic, discrete molecular EuII band-shift luminescence thermometer. Complex 1 exhibits an absolute sensitivity of 8.2 cm–1 K–1 at 320 K, the highest thus far observed for a lanthanide-based band-shift thermometer. Opto-structural correlation via variable-temperature single-crystal X-ray diffraction and fluorescence spectroscopy allows rationalization of the remarkable thermometric luminescence of complex 1 and reveals the significant potential of molecular EuII compounds in luminescence thermometry.
UR - http://www.scopus.com/inward/record.url?scp=85123777364&partnerID=8YFLogxK
U2 - 10.1021/jacs.1c11076
DO - 10.1021/jacs.1c11076
M3 - Article
C2 - 34989573
AN - SCOPUS:85123777364
VL - 144
SP - 912
EP - 921
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
SN - 0002-7863
IS - 2
ER -