Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/184818
Title: | Luminiscent and Magnetic Tb-MOF Flakes Deposited on Silica |
Author: | Bartolomé, Elena Arauzo, Ana Herce, Sergio Palau, Anna Mestres, Narcis Fuertes, Sara Sevilla, Pablo Navarro Spreafico, Laura González, Jonay Sañudo Zotes, Eva Carolina Settineri, Nicholas S. |
Keywords: | Luminescència Propietats magnètiques Nanopartícules Metalls de terres rares Luminescence Magnetic properties Nanoparticles Rare earth metals |
Issue Date: | 6-Sep-2021 |
Publisher: | MDPI |
Abstract: | The synthesis of a terbium-based 2D metal-organic framework (MOF), of formula [Tb(MeCOO)(PhCOO)2] (1), a crystalline material formed by neutral nanosheets held together by Van der Waals interactions, is presented. The material can be easily exfoliated by sonication and deposited onto different substrates. Uniform distributions of Tb-2D MOF flakes onto silicon were obtained by spin-coating. We report the luminescent and magnetic properties of the deposited flakes compared with those of the bulk. Complex 1 is luminescent in the visible and has a sizeable quantum yield of QY = 61% upon excitation at 280 nm. Photoluminescence measurements performed using a micro-Raman set up allowed us to characterize the luminescent spectra of individual flakes on silicon. Magnetization measurements of flakes-on-silicon with the applied magnetic field in-plane and out-of-plane display anisotropy. Ac susceptibility measurements show that 1 in bulk exhibits field-induced slow relaxation of the magnetization through two relaxation paths and the slowest one, with a relaxation time of tlf ⇡ 0.5 s, is assigned to a direct process mechanism. The reported exfoliation of lanthanide 2D-MOFs onto substrates is an attractive approach for the development of multifunctional materials and devices for different applications. |
Note: | Reproducció del document publicat a: https://doi.org/10.3390/molecules26185503 |
It is part of: | Molecules, 2021, vol. 26, num. 8, p. 5503 |
URI: | http://hdl.handle.net/2445/184818 |
Related resource: | https://doi.org/10.3390/molecules26185503 |
ISSN: | 1420-3049 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB)) |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
720052.pdf | 23.95 MB | Adobe PDF | View/Open |
This item is licensed under a Creative Commons License