@misc{10481/94395,
year = {2022},
month = {11},
url = {https://hdl.handle.net/10481/94395},
abstract = {The present work reports on a detailed discussion about the synthesis, characterization,
and luminescence properties of three pairs of enantiopure 3D metal–organic frameworks (MOFs)
with general formula {[Ln2(L/D-tart)3(H2O)2] 3H2O}n (3D_Ln-L/D, where Ln = Sm(III), Eu(III) or
Gd(III), and L/D-tart = L- or D-tartrate), and ten pairs of enantiopure 2D coordination polymers
(CPs) with general formula [Ln(L/D-Htart)2(OH)(H2O)2]n (2D_Ln-L/D, where Ln = Y(III), Sm(III),
Eu(III), Gd(III), Tb(III), Dy(III), Ho(III), Er(III), Tm(III) or Yb(III), and L/D-Htart = hydrogen L- or Dtartrate)
based on single-crystal X-ray structures. Enantiopure nature of the samples has been further
corroborated by Root Mean Square Deviation (RMSD) as well as by circular dichroism (CD) spectra.
Solid-state emission spectra of Eu(III), Tb(III), and Dy(III)-based compounds confirm the occurrence
of ligand-to-metal charge transfers in view of the characteristic emissions for these lanthanide ions,
and emission decay curves were also recorded to estimate the emission lifetimes for the reported
compounds. A complete theoretical study was accomplished to better understand the energy transfers
occurring in the Eu-based counterparts, which allows for explaining the different performances
of 3D-MOFs and 2D-layered compounds. As inferred from the colorimetric diagrams, emission
characteristics of Eu-based 2D CPs depend on the temperature, so their luminescent thermometry has
been determined on the basis of a ratiometric analysis between the ligand-centered and Eu-centered
emission. Finally, a detailed study of the polarized luminescence intensity emitted by the samples is
also accomplished to support the occurrence of chiro-optical activity.},
organization = {University of the Basque Country (GIU20/028), Gobierno
Vasco/Eusko Jaurlaritza (IT1755-22, IT1500-22), Junta de Andalucía (FQM-394, B-FQM-734-UGR20 and
ProyExcel_00386)},
organization = {SpanishMinistry of Economy and Competitiveness (MCIU/AEI/FEDER,
UE) (PGC2018-102052-A-C22, PGC2018-102052-B-C21)},
publisher = {MDPI},
keywords = {chiral MOFs},
keywords = {lanthanides},
keywords = {photoluminescence properties},
title = {Influence of Tartrate Ligand Coordination over Luminescence Properties of Chiral Lanthanide-Based Metal–Organic Frameworks},
doi = {10.3390/nano12223999},
author = {Huizi-Rayo, Uxua and Gastearena, Xuban and Ortuño Guzmán, Ana María and Cuerva, Juan M. and Rodríguez Diéguez, Antonio and García, José Angel and Ugalde, Jesus and Seco, Jose Manuel and San Sebastián, Eider and Cepeda, Javier},
}