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Article

Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers

1
Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, Slovakia
2
Universidade de Franca, Science &Technology, Av. Armando Salles Oliveira 201, Franca 14404-600, Brazil
3
Institute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., BU-1113 Sofia, Bulgaria
*
Author to whom correspondence should be addressed.
Academic Editors: Lars Öhrström, Susan Bourne and Francoise M. Amombo Noa
Received: 6 September 2021 / Revised: 12 October 2021 / Accepted: 13 October 2021 / Published: 15 October 2021
This study presents the synthesis, structural and luminescence properties for lanthanide metal–organic frameworks (LnMOFs), which belong to the sub-class of coordination polymers. The series of nanosized LnMOFs (Ln = Eu, Gd, Tb, Eu0.5Gd0.5, Tb0.5Gd0.5 and Eu0.5Tb0.5) was prepared by solvothermal synthesis using a modulator (sodium acetate). We investigated the various surface chemistry compositions of the isostructural LnMOFs with a [Ln(btc)] structure (BTC: Benzene-1,3,5-tricarboxylate) by X-ray photoelectron spectroscopy (XPS). The XPS confirmed the mixed-valent Eu3+ and Eu2+ compounds, and the presence of Tb in both +3 and +4 valence states, and one +3 valency of Gd. A nanostructure of mixed LnMOFs (EuGd, TbGd and EuTb) with a rod-like shape is related to luminescence properties. The MOFs (EuTb and EuGd) presented Comission Internationale de l’Éclairage (CIE) chromaticities of x = 0.666 and y = 0.331, and x = 0.654 and y = 0.348, respectively, in the red region. They were better than the values desired for use in commercial phosphors, which are x = 0.64 and y = 0.35. For [Tb/Gd(btc)], the CIE coordinates were x = 0.334 and y = 0.562, presenting emissions in the green region. Bimetallic LnMOFs are very promising UV light sensors for biological applications. View Full-Text
Keywords: coordination polymers; metal-organic frameworks; lanthanides; solvothermal synthesis; X-ray photoelectron spectroscopy; luminescence coordination polymers; metal-organic frameworks; lanthanides; solvothermal synthesis; X-ray photoelectron spectroscopy; luminescence
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MDPI and ACS Style

Brunckova, H.; Mudra, E.; Rocha, L.; Nassar, E.; Nascimento, W.; Kolev, H.; Lisnichuk, M.; Kovalcikova, A.; Molcanova, Z.; Strečkova, M.; Medvecky, L. Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers. Inorganics 2021, 9, 77. https://0-doi-org.brum.beds.ac.uk/10.3390/inorganics9100077

AMA Style

Brunckova H, Mudra E, Rocha L, Nassar E, Nascimento W, Kolev H, Lisnichuk M, Kovalcikova A, Molcanova Z, Strečkova M, Medvecky L. Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers. Inorganics. 2021; 9(10):77. https://0-doi-org.brum.beds.ac.uk/10.3390/inorganics9100077

Chicago/Turabian Style

Brunckova, Helena, Erika Mudra, Lucas Rocha, Eduardo Nassar, Willian Nascimento, Hristo Kolev, Maksym Lisnichuk, Alexandra Kovalcikova, Zuzana Molcanova, Magdalena Strečkova, and Lubomir Medvecky. 2021. "Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers" Inorganics 9, no. 10: 77. https://0-doi-org.brum.beds.ac.uk/10.3390/inorganics9100077

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