Rare earth terbium complex and preparation method thereof

A technology of rare earth complexes and rare earth salts, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of weak adsorption force, easy detachment and aggregation, high solubility of rare earth complexes, etc., and achieves the effect of improving the fluorescence lifetime and reducing the cost.

Active Publication Date: 2015-07-22
河南索顿新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the adsorption force of the rare earth complex on the surface of nano-silica is relatively weak, and it is easy to detach and re-aggregate during the processing of the material.
Although silica-coated rare earth complexes can effectively reduce costs, they are not suitable for all rare earth complexes, because most of the rare earth complexes have undergone decomposi

Method used

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  • Rare earth terbium complex and preparation method thereof
  • Rare earth terbium complex and preparation method thereof
  • Rare earth terbium complex and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Weigh 10g of terbium oxide in a beaker, pour 80ml of deionized water into the beaker, then slowly alternately add concentrated hydrochloric acid and hydrogen peroxide dropwise into the beaker, and then add an appropriate amount of hydrochloric acid to react until the solution is clear. Evaporate the solvent while stirring at 90°C. After a crystal film appears and covers the liquid surface, the reaction system is cooled, and a large amount of crystals are precipitated. After the crystals are filtered out with a Buchner funnel, terbium chloride is obtained. Dry at room temperature for later use.

[0061] Weigh 0.1 anhydrous sodium carbonate and place it in a 100mL beaker, add 15mL of absolute ethanol and disperse by ultrasonic vibration in an ultrasonic instrument for one hour.

[0062] Then weigh 0.5 mmol of dried terbium chloride and 1.5 mmol of acetylsalicylic acid into a beaker, and place the beaker on a magnetic stirrer to stir for 2 hours.

[0063] Finally, a solid...

Embodiment 2-7

[0065] Repeat Example 1, the only difference is to change the quality of anhydrous sodium carbonate to 0.2g, 0.3g, 0.4g, 0.5g, 0.6g, 0.7g respectively, to obtain the composite rare earth terbium complexes, whose characterization is shown in the following experimental example 1 -6.

Embodiment 8-15

[0067] Repeat Examples 1-7 respectively, the only difference is that commercially available terbium chloride is used as a raw material to finally obtain a composite rare earth terbium complex, its emission spectrum, excitation spectrum, infrared spectrum, fluorescence microscope photos, fluorescence emission intensity 1. The experimental results of the average fluorescence lifetime are similar to those of Examples 1-7.

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Abstract

The invention discloses a preparation method of a composite rare earth complex, which comprises the steps of weighing an inorganic alkaline matter, adding a polar solvent, performing dispersion, adding rare earth salt and ligand, performing a reaction under stirring, performing filtering, obtaining the composite rare earth complex, optionally performing drying, and obtaining the composite rare earth complex. According to the method, the composite rare earth complex is successfully synthesized and extracted in the polar solvent by using the inorganic alkaline matter for a rare earth binary complex which is difficultly deposited in the polar solvent, so that the difficult-to-deposit rare earth binary complex is effectively deposited out, and the cost of a rare earth fluorescent material is lowered.

Description

technical field [0001] The invention belongs to the technical field of rare earth luminescent materials, and relates to a novel composite luminescent material, in particular to a composite rare earth complex with an inorganic base as the inner core and a rare earth complex on the outer layer and a preparation method thereof. Background technique [0002] Rare earth complexes, as a kind of luminescent material, are widely used in luminescent display, fluorescent probe, anti-counterfeiting and other fields due to their characteristics of narrow emission peak, high quantum efficiency, and the emission peak position does not move with the change of ligand. [0003] However, due to the rising price of rare earths, the application of rare earth complexes in some fields has been limited. Some methods have been reported in the literature to improve the luminescent properties of rare earth complexes, such as the use of rare earth terbium doped alumina fibers in patent CN 102504817 A,...

Claims

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Application Information

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IPC IPC(8): C09K11/06C09K11/02
Inventor 陶栋梁
Owner 河南索顿新材料有限公司
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