RT Journal Article
T1 An air-stable high-performance single-molecule magnet operating as a luminescent thermometer below its blocking temperature
A1 Corredoira Vázquez, Julio
A1 González-Barreira, Cristina
A1 Fondo Busto, María Matilde
A1 García Deibe, Ana María
A1 Sanmartín Matalobos, Jesús
A1 Gómez Coca, Silvia
A1 Ruiz, Eliseo
A1 Brites, Carlos D. S.
A1 Carlos, Luís D.
K1 Molecule magnets
K1 Air-stable hexagonal bipyramidal compound
K1 Luminescent thermometer
AB The field of molecule magnets has advanced significantly in recent years. Yet, key challenges persist for their practical applications, such as achieving higher blocking temperatures and maintaining precise temperature control in air-stable magnets. This work addresses aspects related to both challenges. Thus, it presents the air-stable hexagonal bipyramidal compound {[Dy(LN6en)(OSiPh3)2](BPh4)}·1.5CH2Cl2 (1·1.5CH2Cl2) and its diluted analogue {[Dy0.1Y0.9(LN6en)(OSiPh3)2](BPh4)}·1.5CH2Cl2 (1@Y·1.5CH2Cl2). Their high axiality, achieved by reducing equatorial charge, enables magnetic behaviour with energy barriers higher than 1500 K and blocking temperatures based on hysteresis (THB) of 12 and 40 K, respectively. Hence, 1@Y·1.5CH2Cl2 is the SMM with the highest THB reported among air-stable uncapsulated molecule magnets. Besides, both complexes show temperature-dependent luminescence. Remarkably, 1@Y·1.5CH2Cl2 stands out as the pioneering example of a bifunctional molecule magnet and luminescent thermometer with both functionalities active below its THB. This breakthrough makes it possible to monitor the temperature of a molecule in the range where it exhibits remanent magnetization for the first time. Moreover, this molecular material presents by far the best magnetic characteristics (Ueff and THB) of any SMM luminescent thermometer reported to date. Experimental magnetic and luminescent data are analysed using theoretical calculations. Notably, luminescence is interpreted via coupled cluster methods, offering a more sophisticated alternative to the traditional time-dependent DFT approach
PB RSC
YR 2025
FD 2025-06-03
LK https://hdl.handle.net/10347/43313
UL https://hdl.handle.net/10347/43313
LA eng
NO Corredoira-Vázquez, J., González-Barreira, C., Fondo, M., García-Deibe, Ana M., Sanmartín-Matalobos, J., Gómez-Coca, S., Ruiz, E., Brites, C. D. S., and Carlos, L. D. (2025). An air-stable high-performance single-molecule magnet operating as a luminescent thermometer below its blocking temperature. Inorg. Chem. Front., 2025,12, 5506-5516
NO Universidade de Santiago de Compostela (2024-PU027-1)
NO Consellería de Cultura, Educación, Formación Profesional e Universidades, Xunta de Galicia (convenio 2023-1298)
NO Portuguese funds through the FCT/MCTES (PIDDAC) (UIDB/50011/2020, UIDP/50011/2020, and LA/P/0006/2020)
NO Maria de Maeztu CEX2021-001202-M
NO Xunta de Galicia, ED481B-2022-068
NO Generalitat de Catalunya 2021-SGR-00286 grant
DS Minerva
RD 28 abr 2026