Utilize este identificador para referenciar este registo:
http://hdl.handle.net/10773/20823
Título: | Visible-Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks |
Autor: | Li, Liang Zhu, Yali Zhou, Xinhui Brites, Carlos D. S. Ananias, Duarte Lin, Zhi Almeida Paz, Filipe A. Rocha, João Huang, Wei Carlos, Luís D. |
Palavras-chave: | Temperature-measurement Coordination polymers Energy-transfer Emission Metal Nanothermometers Dependence Nanoscale Ligand Range |
Data: | 2016 |
Editora: | Wiley |
Resumo: | Isostructural lanthanide organic frameworks (Me2NH2)(3)[Ln(3)(FDC)(4)(NO3)(4)]center dot 4H(2)O (Ln = Eu (1), Gd (2), Tb (3), H2FDC = 9-fluorenone-2,7-dicarboxylic acid), synthesized under solvothermal conditions, feature a Ln-O-C rod-packing 3D framework. Time-resolved luminescence studies show that in 1 the energy difference between the H2FDC triplet excited state (17794 cm(-1)) and the D-5(0) Eu3+ level (17241 cm(-1)) is small enough to allow a strong thermally activated ion-to-ligand back energy transfer. Whereas the emission of the ligand is essentially constant the D-5(0)-> F-7(2) intensity is quenched when the temperature increases from 12 to 320 K, rendering 1 the first single-lanthanide organic framework ratiometric luminescent thermometer based on ion-to-ligand back energy transfer. More importantly, this material is also the first example of a metal organic framework thermometer operative over a wide temperature range including the physiological (12-320 K), upon excitation with visible light (450 nm). |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/20823 |
DOI: | 10.1002/adfm.201603179 |
ISSN: | 1616-301X |
Versão do Editor: | 10.1002/adfm.201603179 |
Aparece nas coleções: | CICECO - Artigos DFis - Artigos DQ - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Visible-Light Excited Luminescent Thermometer Based on Single Lanthanide Organic Frameworks_10.1002adfm.201603179.pdf | 1.66 MB | Adobe PDF |
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