Rare-earth complex nano luminescent material
A technology of nano-luminescent materials and rare earth complexes, which is applied in the fields of luminescent materials, compounds containing Group 3/13 elements of the periodic table, chemical instruments and methods, etc., can solve the problems of weak ion fluorescence and low ion absorption, and save energy. Cost, cost reduction, effect of maintaining luminous performance
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Embodiment 1
[0028] Rare earth complex nanomaterials: Weigh 205mg of potassium hydrogen phthalate, 73mg of adipic acid and 82mg of sodium hydroxide dissolved in 10mL of water, then add 5mL of dissolved 1mmol of rare earth nitrate Ln(NO 3 ) 3 ·6H 2 The aqueous solution of O (Ln=Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb) completely clarified the solution after addition, continued to stir the reaction, the solution gradually became turbid, and filtered the turbid solution after 1 hour, water and ethanol After washing several times and drying in vacuum, a powdery product is obtained with a yield of 57-63%. X-ray powder diffraction characterization confirmed that the product is a pure phase powder of rare earth complexes, and the spectrum is shown in the attached figure 1 , due to the characteristics of material orientation growth, some diffraction peaks are enhanced and some diffraction peaks basically disappear. Scanning electron microscope observation found that the product is indeed an orientation-...
Embodiment 2
[0030] Eu complex nanomaterials doped with equal proportions of Yb: Weigh 205mg of potassium hydrogen phthalate, 73mg of adipic acid and 82mg of sodium hydroxide dissolved in 10mL of water, then add 5mL of dissolved Eu(NO 3 ) 3 ·6H 2 O and Yb(NO 3 ) 3 ·6H 2 O each 0.5mmol mixed rare earth nitrate aqueous solution, completely clarifies the added solution, continues to stir and react, the solution becomes turbid gradually, after 1 hour the turbid solution is filtered, water and ethanol are washed several times, vacuum-dried to obtain powdery product, Yield 59%. Due to the low content of Eu in this nanomaterial, it directly excites the rare earth ion Eu(λ ex =394nm) is much lower than that of pure Eu material, and its fluorescence emission spectrum is shown in the attached Image 6 .
Embodiment 3
[0032] Tb complex nanomaterials doped with equal proportions of Gd: Weigh 205mg of potassium hydrogen phthalate, 73mg of adipic acid and 82mg of sodium hydroxide dissolved in 10mL of water, then add 5mL of dissolved Tb(NO 3 ) 3 ·6H 2 O and Gd(NO 3 ) 3 ·6H 2 O each 0.5mmol mixed rare earth nitrate aqueous solution, completely clarifies the added solution, continues to stir and react, the solution becomes turbid gradually, after 1 hour the turbid solution is filtered, water and ethanol are washed several times, vacuum-dried to obtain powdery product, Yield 58%. Due to the low content of Tb in this nanomaterial, it directly excites the rare earth ion Tb(λ ex =369nm) is much lower than the pure Tb material, and its fluorescence emission spectrum is shown in the attached Figure 8 . And when the material is excited with 289nm light, due to the good energy transfer from ligand to rare earth and Gd to Tb ions inside the material (antenna effect and concentration effect), its f...
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