A cryogenic luminescent ratiometric thermometer based on a lanthanide phosphonate dimer
The first example of a ratiometric Eu/Tb thermometer based on a lanthanide phosphonate is reported, which presents a temperature dependent emission under 393 nm excitation that enables its use as a molecular thermometer with a maximum relative sensitivity of 3.9% K-1 and a minimum temperature uncert...
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| Other Authors: | , , , , |
| Format: | article |
| Language: | eng |
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1000
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10773/19901 |
| Country: | Portugal |
| Oai: | oai:ria.ua.pt:10773/19901 |
| Summary: | The first example of a ratiometric Eu/Tb thermometer based on a lanthanide phosphonate is reported, which presents a temperature dependent emission under 393 nm excitation that enables its use as a molecular thermometer with a maximum relative sensitivity of 3.9% K-1 and a minimum temperature uncertainty of 0.15 K, both at 38 K. Additionally, the compound is a competitive luminescent colorimetric probe showing temperature dependent (x, y) CIE color coordinates changing from yellow, (0.48, 0.48) at 18 K, to red, (0.64, 0.37) at 300 K. |
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