期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 2, 期 33, 页码 6758-6764出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4tc00962b
关键词
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资金
- National Natural Science Foundation of China [91122003, 20971100]
- Program for New Century Excellent Talents in University [NCET-08-0398]
- Tongji University
Solvothermal reactions of LnCl(3)center dot 6H(2)O (Ln - Eu, Tb, Sm and Dy) with 2-aminoterephthalic acid obtain four isostructural lanthanide(III)-organic frameworks. The structure has the topology of a gadolinium 2-aminoterephthalic acid (MOF-LIC-1). The as-obtained samples were characterized by X-ray diffraction, FT-IR, TGA and luminescence spectroscopy. They all belong to the luminescence materials system with broad band excitation, which could extend to the visible-light region. The selected ligand could effectively sensitize the luminescence of Eu3+, Tb3+ and Sm3+, particularly the Eu3+ ions; thus, leading to the characteristic luminescence of Ln(3+). More significantly, the white-light emission may be realized by a single-component Sm(III) framework. Furthermore, Eu-MOF was selected as a representative sample to examine the potential of the material for the sensing of metal ions. It showed highly selective and sensitive luminescence sensing for Al3+ ions. In addition, the luminescence color change can be easily distinguished with the naked eye under UV-light irradiation.
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