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• W2076306057 endingPage "1730" @default.
• W2076306057 startingPage "1725" @default.
• W2076306057 abstract "New kinds of organic–inorganic hybrid materials consisting of lanthanide (Er3+, Eu3+, and Tb3+) complexes covalently bonded to a silica-based network have been obtained by a sol–gel approach. A new versatile compound containing terpyridine has been synthesized by 4′-p-aminophenyl-2,2′:6′,2″-terpyridine and 3-(triethoxysilyl)propyl isocyanate, which is used as the a ligand of lanthanide ions and also the siloxane network precursor. The obtained hybrid materials were characterized by FT-IR, TGA, DSC, near-infrared, and visible spectrofluorometer, as well as decay analysis. For the Hybrid-Er and Hybrid-Eu, excitation at the ligand absorption wavelength resulted in the typical near-IR luminescence (centered at around 1.54 μm) resulting from the 4I13/2–4I15/2 transition of Er3+ ions and strong visible region emission of the Eu3+ ions (5D0–7FJ), which contributed to the efficient energy transfer from the ligands to the lanthanide ions. However, we have not found strong emission for the Hybrid-Tb. This indicated that the energy transfer did not take place in this system. A model of indirect excitation mechanism to explain the phenomenon was also suggested." @default.
• W2076306057 created "2016-06-24" @default.
• W2076306057 creator A5061493341 @default.
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• W2076306057 date "2008-10-01" @default.
• W2076306057 modified "2023-10-16" @default.
• W2076306057 title "Preparation and luminescence properties of hybrid materials containing lanthanide complexes covalently bonded to a terpyridine-functionalized silica matrix" @default.
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• W2076306057 doi "https://doi.org/10.1016/j.jlumin.2008.03.020" @default.
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