Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers
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, Eu<sub>0.5</sub>Gd<sub>0.5</sub>, Tb<sub>...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-10-01
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| Series: | Inorganics |
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| Online Access: | https://www.mdpi.com/2304-6740/9/10/77 |
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| author | Helena Brunckova Erika Mudra Lucas Rocha Eduardo Nassar Willian Nascimento Hristo Kolev Maksym Lisnichuk Alexandra Kovalcikova Zuzana Molcanova Magdalena Strečkova Lubomir Medvecky |
| author_facet | Helena Brunckova Erika Mudra Lucas Rocha Eduardo Nassar Willian Nascimento Hristo Kolev Maksym Lisnichuk Alexandra Kovalcikova Zuzana Molcanova Magdalena Strečkova Lubomir Medvecky |
| author_sort | Helena Brunckova |
| collection | DOAJ |
| description | 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, Eu<sub>0.5</sub>Gd<sub>0.5</sub>, Tb<sub>0.5</sub>Gd<sub>0.5</sub> and Eu<sub>0.5</sub>Tb<sub>0.5</sub>) 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 Eu<sup>3+</sup> and Eu<sup>2+</sup> 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. |
| first_indexed | 2024-03-10T06:29:54Z |
| format | Article |
| id | doaj.art-80022745450c4279835eefb2e20dc1ec |
| institution | Directory Open Access Journal |
| issn | 2304-6740 |
| language | English |
| last_indexed | 2024-03-10T06:29:54Z |
| publishDate | 2021-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Inorganics |
| spelling | doaj.art-80022745450c4279835eefb2e20dc1ec2023-11-22T18:38:24ZengMDPI AGInorganics2304-67402021-10-019107710.3390/inorganics9100077Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination PolymersHelena Brunckova0Erika Mudra1Lucas Rocha2Eduardo Nassar3Willian Nascimento4Hristo Kolev5Maksym Lisnichuk6Alexandra Kovalcikova7Zuzana Molcanova8Magdalena Strečkova9Lubomir Medvecky10Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaUniversidade de Franca, Science &Technology, Av. Armando Salles Oliveira 201, Franca 14404-600, BrazilUniversidade de Franca, Science &Technology, Av. Armando Salles Oliveira 201, Franca 14404-600, BrazilUniversidade de Franca, Science &Technology, Av. Armando Salles Oliveira 201, Franca 14404-600, BrazilInstitute of Catalysis, Bulgarian Academy of Sciences, Acad. G. Bonchev St., BU-1113 Sofia, BulgariaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaInstitute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, SlovakiaThis 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, Eu<sub>0.5</sub>Gd<sub>0.5</sub>, Tb<sub>0.5</sub>Gd<sub>0.5</sub> and Eu<sub>0.5</sub>Tb<sub>0.5</sub>) 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 Eu<sup>3+</sup> and Eu<sup>2+</sup> 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.https://www.mdpi.com/2304-6740/9/10/77coordination polymersmetal-organic frameworkslanthanidessolvothermal synthesisX-ray photoelectron spectroscopyluminescence |
| spellingShingle | Helena Brunckova Erika Mudra Lucas Rocha Eduardo Nassar Willian Nascimento Hristo Kolev Maksym Lisnichuk Alexandra Kovalcikova Zuzana Molcanova Magdalena Strečkova Lubomir Medvecky Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers Inorganics coordination polymers metal-organic frameworks lanthanides solvothermal synthesis X-ray photoelectron spectroscopy luminescence |
| title | Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers |
| title_full | Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers |
| title_fullStr | Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers |
| title_full_unstemmed | Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers |
| title_short | Nanostructure and Luminescent Properties of Bimetallic Lanthanide Eu/Gd, Tb/Gd and Eu/Tb Coordination Polymers |
| title_sort | nanostructure and luminescent properties of bimetallic lanthanide eu gd tb gd and eu tb coordination polymers |
| topic | coordination polymers metal-organic frameworks lanthanides solvothermal synthesis X-ray photoelectron spectroscopy luminescence |
| url | https://www.mdpi.com/2304-6740/9/10/77 |
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