Preparation method of gadolinium doped rare earth europium complex

A europium complex and rare earth technology, applied in the field of luminescent materials, can solve the problems such as the need to improve the fluorescence intensity, the high price of rare earth metals, and the shortage of principles.

Active Publication Date: 2016-02-17
河南索顿新材料有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

[0003] There are a large number of methods for preparing double-ligand ternary complexes in the prior art, such as Chinese patent CN103224660A, which discloses a method for preparing rare earth complexes / polymer nanocomposite plastic films, wherein the ternary complex Eu( TTA) 3 TPPO, which reacts the aqueous solution of europium chloride with TTA, and then reacts with TPPO to prepare the above-mentioned complex, and then reacts the prepared complex with low-density polyethylene to make a nanometer rare earth complex light conversion film. In this patent Among them, there is only one rare earth metal europium in the above-mentioned ternary complexes, the price of this rare earth metal is high, and the principle is short because it should be widely used, and the fluorescence intensity needs to be improved

Method used

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  • Preparation method of gadolinium doped rare earth europium complex
  • Preparation method of gadolinium doped rare earth europium complex
  • Preparation method of gadolinium doped rare earth europium complex

Examples

Experimental program
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Effect test

Embodiment 1

[0059] (1)EuCl 3 ·6H 2 Preparation of O:

[0060] (1-1) Mix 10.0 g of europium oxide with 16 mL of hydrochloric acid (5%), and heat up to 60° C. under stirring to obtain a clear liquid;

[0061] (1-2) Filter the clarified liquid obtained in step (1-1), evaporate the filtrate until a crystal film appears on the surface, stop heating, apply filter paper to the mouth of the container, let it stand, and keep cooling at room temperature. A large number of white crystals, the crystals were filtered out, and the mother liquor continued to crystallize in the same way until the filtrate was evaporated to obtain EuCl 3 ·6H 2 O crystals;

[0062] (2) GdCl 3 ·6H 2 The preparation of O, the method used is the same as step (1), the only difference is that the reagent used is gadolinium oxide, and GdCl 3 ·6H 2 O crystals;

[0063] (3) EuCl prepared in 3mmolTTA, step (1) 3 ·6H 2 The GdCl that makes in the 0.9mmol and step (2) 3 ·6H 2 0.1mmol was dissolved in absolute ethanol to o...

Embodiment 2

[0067] The method used in this embodiment is the same as that of Example 1, the difference is only that 3 mmolTTA is added in step (3), the EuCl prepared in step (1) 3 ·6H 2 The GdCl that makes in the 0.8mmol and step (2) 3 ·6H 2 O0.2mmol, the prepared quaternary double-ligand complex is Eu 0.8 Gd 0.2 (TTA) 3 (TPPO) 2 . Its infrared spectrum is as figure 1 Shown: there are strong absorption peaks at wavelengths of 540nm, 1302nm and 1612nm; its fluorescence spectrum is as figure 2 Shown: Under the condition that the detection wavelength is 612nm and the excitation and emission slits are both 1nm, there is a broad and strong peak near the excitation wavelength of 365nm, and a sharp and weak peak at the excitation wavelength of 461nm.

Embodiment 3

[0069] The method used in this embodiment is the same as that of Example 1, the difference is only that 3 mmolTTA is added in step (3), the EuCl prepared in step (1) 3 ·6H 2 The GdCl that makes in the 0.7mmol and step (2) 3 ·6H 2 O0.3mmol, the prepared quaternary double-ligand complex is Eu 0.7 Gd 0.3 (TTA) 3 (TPPO) 2 . Its infrared spectrum is as figure 1 There are strong absorption peaks at the shown wavelengths of 540nm, 1302nm and 1612nm; its fluorescence spectrum is as follows figure 2 Shown: Under the condition that the detection wavelength is 612nm and the excitation and emission slits are both 1nm, there is a broad and strong peak near the excitation wavelength of 366nm, and a sharp and weak peak at the excitation wavelength of 459nm.

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Abstract

The invention discloses a preparation method of a gadolinium doped rare earth europium complex. The method is as below: preparing europium oxide and gadolinium oxide into europium chloride and gadolinium chloride; and conducting a coordination reaction on europium chloride and gadolinium chloride and a ligand to prepare a quaternary dual ligand complex. The complex is doped with cheap and non-luminescence gadolinium, but complex has improved fluorescence intensity, and greatly reduces production costs.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to a method for preparing gadolinium-doped rare earth europium complexes. Background technique [0002] Because rare earth elements have the same electronic structure in the outer layer and the similar electronic configuration of the 4f electron in the inner layer, they have unique photoelectromagnetic properties, that is, photoluminescence and electroluminescence characteristics, and are often used as fluorescent materials. Materials such as phosphors in color televisions. [0003] There are a large number of methods for preparing double-ligand ternary complexes in the prior art, such as Chinese patent CN103224660A, which discloses a method for preparing rare earth complexes / polymer nanocomposite plastic films, wherein the ternary complex Eu( TTA) 3 TPPO, which reacts the aqueous solution of europium chloride with TTA, and then reacts with TPPO to prepare the above-mentioned ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F5/00C09K11/06
Inventor 陶栋梁崔玉民张宏李世刚
Owner 河南索顿新材料有限公司
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