RT Journal Article
T1 Luminescence thermometry in a Dy4 single molecule magnet
A1 Corredoira Vázquez, Julio
A1 González-Barreira, Cristina
A1 Fondo Busto, María Matilde
A1 García Deibe, Ana María
A1 Sanmartín Matalobos, Jesús
A1 Hernández Rodríguez, Miguel Ángel
A1 Carlos, Luis D
K1 SMM
K1 Luminescent thermometers
AB The tetranuclear linear complex [Dy4(1,1,4-H3Lr)2(OAc)6]·CH3OH (1·CH3OH) was satisfactorily prepared and characterized. Its X-ray structure shows that it contains two types of octacoordinated DyIII ions, with distorted triangular dodecahedral and square antiprism geometries. This complex is an SMM, with multiple relaxation pathways, and with an anisotropic energy barrier of 39.7 K. 1·CH3OH also operates as a luminescent thermometer in the 11–295 K range, with a maximum relative thermal sensitivity of 1.6% K−1 and a minimum temperature uncertainty of 1.1 K at 295 K. Thus, 1·CH3OH is the first Dy4 SMM with luminescent thermometry, and this system is a rare example of dysprosium SMM that accesses the thermometric characteristics involving the ligand ascribed to the triplet emission in combination with DyIII emission.
PB The Royal Society of Chemistry
YR 2022
FD 2022-09-22
LK http://hdl.handle.net/10347/32381
UL http://hdl.handle.net/10347/32381
LA eng
NO Corredoira-Vázquez J., González-Barreira, C., Fondo, M., García-Deibe, A.M., Sanmartín-Matalobos, J., Hernández-Rodríguez, M.A., Carlos, L.D. (2022). Luminescence thermometry in a Dy4 single molecule magnet. "Dalton Transactions", vol. 51, n. 40, 15593-15600
NO Authors thank the Spanish Ministerio de Innovación, Ciencia y Universidades (PGC2018102052-B-C21), and Xunta de Galicia for financial support. J. C.-V. also thanks Xunta de Galicia for his postdoctoral fellowship (ED481B-2022-068). This work was also developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by Portuguese funds through the FCT/MEC (PIDDAC).
DS Minerva
RD 23 abr 2026