1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission
Two homometallic Coordination Polymers (CPs) with composition [Ln(hfac)<sub>3</sub>bipy]<sub>n</sub> (Ln<sup>3+</sup> = Eu<sup>3+</sup>, <b>1</b>, and Tb<sup>3+</sup>, <b>2</b>; hfac = hexafluoroacetylacetonato, bipy...
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oai:doaj.org-article:87c0d2cde9b343e5b8b20757392ea74d2021-11-11T18:01:18Z1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission10.3390/ma142164451996-1944https://doaj.org/article/87c0d2cde9b343e5b8b20757392ea74d2021-10-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6445https://doaj.org/toc/1996-1944Two homometallic Coordination Polymers (CPs) with composition [Ln(hfac)<sub>3</sub>bipy]<sub>n</sub> (Ln<sup>3+</sup> = Eu<sup>3+</sup>, <b>1</b>, and Tb<sup>3+</sup>, <b>2</b>; hfac = hexafluoroacetylacetonato, bipy = 4,4′-bipyridine) were used to develop a family of ratiometric luminescent thermometers containing Eu<sup>3+</sup> and Tb<sup>3+</sup> as red and green emitters, respectively. The thermometric properties of pure CPs and of their mixtures having an Eu<sup>3+</sup>/Tb<sup>3+</sup> molar ratio of 1:1, 1:3, 1:5, and 1:10 (samples: <b>Eu1Tb1</b>, <b>Eu1Tb3</b>, <b>Eu1Tb5</b>, and <b>Eu1Tb10</b>) were studied in the 83–383 K temperature range. Irrespective of the chemical composition, we observed similar thermometric responses characterized by broad applicative temperature ranges (from 100 to 165 K wide), and high relative thermal sensitivity values (S<sub>r</sub>), up to 2.40% K<sup>−1</sup>, in the physiological temperature range (298–318 K). All samples showed emissions endowed with peculiar and continuous color variation from green (83 K) to red (383 K) that can be exploited to develop a colorimetric temperature indicator. At fixed temperature, the color of the emitted light can be tuned by varying composition and excitation wavelength.Luca BellucciGregorio BottaroLuca LabellaFabio MarchettiSimona SamaritaniDaniela Belli Dell'AmicoLidia ArmelaoMDPI AGarticleluminescenceeuropiumterbiumlanthanide coordination polymersluminescent molecular thermometersratiometric thermometersTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6445, p 6445 (2021) |
| institution |
DOAJ |
| collection |
DOAJ |
| language |
EN |
| topic |
luminescence europium terbium lanthanide coordination polymers luminescent molecular thermometers ratiometric thermometers Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 |
| spellingShingle |
luminescence europium terbium lanthanide coordination polymers luminescent molecular thermometers ratiometric thermometers Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Luca Bellucci Gregorio Bottaro Luca Labella Fabio Marchetti Simona Samaritani Daniela Belli Dell'Amico Lidia Armelao 1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| description |
Two homometallic Coordination Polymers (CPs) with composition [Ln(hfac)<sub>3</sub>bipy]<sub>n</sub> (Ln<sup>3+</sup> = Eu<sup>3+</sup>, <b>1</b>, and Tb<sup>3+</sup>, <b>2</b>; hfac = hexafluoroacetylacetonato, bipy = 4,4′-bipyridine) were used to develop a family of ratiometric luminescent thermometers containing Eu<sup>3+</sup> and Tb<sup>3+</sup> as red and green emitters, respectively. The thermometric properties of pure CPs and of their mixtures having an Eu<sup>3+</sup>/Tb<sup>3+</sup> molar ratio of 1:1, 1:3, 1:5, and 1:10 (samples: <b>Eu1Tb1</b>, <b>Eu1Tb3</b>, <b>Eu1Tb5</b>, and <b>Eu1Tb10</b>) were studied in the 83–383 K temperature range. Irrespective of the chemical composition, we observed similar thermometric responses characterized by broad applicative temperature ranges (from 100 to 165 K wide), and high relative thermal sensitivity values (S<sub>r</sub>), up to 2.40% K<sup>−1</sup>, in the physiological temperature range (298–318 K). All samples showed emissions endowed with peculiar and continuous color variation from green (83 K) to red (383 K) that can be exploited to develop a colorimetric temperature indicator. At fixed temperature, the color of the emitted light can be tuned by varying composition and excitation wavelength. |
| format |
article |
| author |
Luca Bellucci Gregorio Bottaro Luca Labella Fabio Marchetti Simona Samaritani Daniela Belli Dell'Amico Lidia Armelao |
| author_facet |
Luca Bellucci Gregorio Bottaro Luca Labella Fabio Marchetti Simona Samaritani Daniela Belli Dell'Amico Lidia Armelao |
| author_sort |
Luca Bellucci |
| title |
1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| title_short |
1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| title_full |
1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| title_fullStr |
1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| title_full_unstemmed |
1D-Zigzag Eu<sup>3+</sup>/Tb<sup>3+</sup> Coordination Chains as Luminescent Ratiometric Thermometers Endowed with Multicolor Emission |
| title_sort |
1d-zigzag eu<sup>3+</sup>/tb<sup>3+</sup> coordination chains as luminescent ratiometric thermometers endowed with multicolor emission |
| publisher |
MDPI AG |
| publishDate |
2021 |
| url |
https://doaj.org/article/87c0d2cde9b343e5b8b20757392ea74d |
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