Magnetic and luminescent lanthanoid (Ln = Tb, Dy) 2D MOFs on functionalized silicon

Bartolomé, Elena ; Sevilla, Pablo ; Gabarró-Riera, Guillem ; Arauzo, Ana (Universidad de Zaragoza) ; Rubio Zuazo, Juan ; Sañudo, E. Carolina

Resumen: The controlled deposition of organized molecular materials on technologically relevant substrates is crucial for the development of innovative magneto-optical devices. In this work, we report the growth of lanthanoid-based 2D metal–organic frameworks (MOFs) with formula unit [Ln(MeCOO)(PhCOO)2] (Ln = Dy, Tb) on Si(100) wafers functionalized by silanization. The thickness, morphology and composition of the grown material was assessed using a combination of ellipsometry, contact angle measurements, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The on-surface grown terbium 2D MOFs exhibit green luminescence, like the bulk. Furthermore, chemisorbed Dy and Tb 2D MOFs retain a significant magnetic moment, as demonstrated by X-ray magnetic circular dichroism (XMCD) measurements conducted at the M4,5 edge of the two lanthanoids. Our work paves the way for the preparation of magneto-optical devices and organized arrays of single-molecule magnets (SMMs) and qubits on surfaces for high-density information storage and quantum computing applications.

Idioma: Inglés

DOI: 10.1039/d5tc02447a

Año: 2025

Publicado en: JOURNAL OF MATERIALS CHEMISTRY C (2025), [12 pp.]
ISSN: 2050-7526

Financiación: info:eu-repo/grantAgreement/ES/DGA/E12-23R
Financiación: info:eu-repo/grantAgreement/ES/MCIU/PGC2018-098630-B-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-137764OB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2022-138492NB-I00

Tipo y forma: Artículo (Versión definitiva)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)