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Employing three-blade propeller lanthanide complexes as molecular luminescent thermometers: study of temperature sensing through a concerted experimental/theory approach
We report the synthesis, structures, magnetic and luminescence properties of a series of three-blade propeller homoleptic lanthanide complexes [LnL 3 ](ClO 4 ) 3 H 2 O2MeCN (Ln = Eu ( 1 ), Tb ( 2 ), Dy ( 3 ), Er ( 4 ), Yb ( 5 ), Gd ( 6 ); L = 2,6-bis(1-methyl-imidazol-2-yl)pyridine). The Eu, Tb, and...
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Published in: | Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2022, Vol.1 (18), p.7176-7188 |
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Main Authors: | , , , , , , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | We report the synthesis, structures, magnetic and luminescence properties of a series of three-blade propeller homoleptic lanthanide complexes [LnL
3
](ClO
4
)
3
H
2
O2MeCN (Ln = Eu (
1
), Tb (
2
), Dy (
3
), Er (
4
), Yb (
5
), Gd (
6
); L = 2,6-bis(1-methyl-imidazol-2-yl)pyridine). The Eu, Tb, and Dy analogues exhibit the characteristic lanthanide-based luminescence. Remarkably, the mixed Eu/Tb complex with a metal ratio of 1:10 can be used as a ratiometric thermometer in the solid-state between 130 and 220 K with the maximum value of
S
r
= 6.6% K
1
within the range of 150170 K. Theoretical calculations allow not only modelling of the luminescence properties of pure complexes but also rationalization of the performances of the mixed Eu/Tb thermometers.
The synthesis, structures, magnetic and luminescence (including thermometry) properties of a series of three-blade propeller homoleptic lanthanide complexes are reported. |
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ISSN: | 2050-7526 2050-7534 |
DOI: | 10.1039/d2tc01289h |