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A ternary rare earth complex and its application in the preparation of high-intensity hybrid luminescent hydrogel

A technology of rare earth complexes and complexes, which is applied to compounds containing elements of group 3/13 of the periodic table, luminescent materials, organic compounds of group 3/13 without C-metal bonds, etc. problem, to achieve the effect of good mechanical strength, good self-healing performance and good mechanical properties

Active Publication Date: 2018-07-13
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a large number of carboxylate groups in ASAP can coordinate with rare earth ions, thereby competing with the original β-diketone ligands, causing the fluorescence quenching of rare earth ions, so the compatibility of ASAP and rare earth complexes has not yet been resolved.

Method used

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  • A ternary rare earth complex and its application in the preparation of high-intensity hybrid luminescent hydrogel
  • A ternary rare earth complex and its application in the preparation of high-intensity hybrid luminescent hydrogel
  • A ternary rare earth complex and its application in the preparation of high-intensity hybrid luminescent hydrogel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Using Eu(TTA) 3 (408mg, 0.5mmol) with Tpy-mim 2 (415mg, 0.5mmol) was dissolved in 10mL of methanol, heated to 80°C and kept stirring for 6 hours, after cooling to room temperature, 100mL of ether was added to make the precipitation fully, and a white precipitate was obtained. The resulting precipitate was collected by centrifugation, washed with three times the volume of precipitated ether, and dried in vacuo to obtain Eu(TTA) 3 Tpy-mim 2 powder.

[0032] (2) Disperse 150 mg of laponite LAPONITE XLG nanoclay in 3.5 mL of deionized water, and stir at room temperature for 10 minutes. 4.5 mg of ASAP was dissolved in 0.5 mL of deionized water and added to the nanoclay dispersion. After 10 minutes, add Eu(TTA) 3 Tpy-mim 2 Aqueous solution (containing 4.0mg Eu(TTA) 3 Tpy-mim 2 , the volume of the solution is 1.0 mL), and the stirring was continued for 3 minutes to obtain a luminescent hydrogel.

[0033] figure 1 for Eu(TTA) 3 Tpy-mim 2 of 1 H NMR nuclear mag...

Embodiment 2

[0038] Step (1) is the same as in Example 1, and the amount of laponite LAPONITE XLG nanoclay in step (2) is increased to 300 mg. Experiments show that increasing the mass fraction of laponite LAPONITE XLG nanoclay can significantly increase the elastic modulus value of the obtained gel, and achieve the purpose of enhancing its mechanical strength.

Embodiment 3

[0040] 1) Using Yb(TTA) 3 (420mg, 0.5mmol) with Tpy-mim 2 (415mg, 0.5mmol) was dissolved in 10mL of methanol, heated to 80°C and kept stirring for 6 hours, after cooling to room temperature, 100mL of ether was added to make the precipitation fully, and a white precipitate was obtained. The resulting precipitate was collected by centrifugation, washed with three times the volume of precipitated ether, and dried in vacuo to obtain Yb(TTA) 3 Tpy-mim 2 .

[0041] (2) Disperse 150 mg of laponite LAPONITE XLG nanoclay in 3.5 mL of deionized water, and stir at room temperature for 10 minutes. 4.5 mg of ASAP was dissolved in 0.5 mL of deionized water and added to the nanoclay dispersion. After 10 minutes, add Yb(TTA) 3 Tpy-mim 2 Aqueous solution (4.1mg, 1.0mL), continue to stir for 3 minutes to obtain a luminescent hydrogel. Compared with Example 1, its mechanical strength has no obvious change. and Yb(TTA) 3 Tpy-mim 2 Gel with Yb(TTA) 3 Compared with ASAP predispersed lapo...

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Abstract

The invention provides a ternary rare earth complex and application of the complex in preparing high-strength hybrid luminous hydrogel. The chemical structural formula of the ternary rare earth complex is shown as follows. First terpyridyl bridged imidazolium salt is used for being combined with a rare earth beta-diketone complex to form a ternary complex, the ternary complex can be self-assembled in water to form a micellar structure, and then rare earth ions and ASPA are isolated through the collaborative protection on the rare earth ions by the ternary complex and the micellar structure, so that the aim of preparing a hydrogel which is good in luminescence property and high in mechanical strength is achieved. The hydrogel uses water as a medium, the preparation method is simple, easy and environmentally friendly, and a volatile organic solvent is avoided from being used. Please see the formula in the description.

Description

technical field [0001] The invention belongs to the field of rare earth hybrid luminescent materials, and relates to a rare earth luminescent hydrogel, in particular to a preparation method of a high water content, high mechanical strength, self-repairing luminescent hydrogel. technical background [0002] Rare earth organic complexes have the advantages of strong light absorption ability, high luminous quantum efficiency, long fluorescence lifetime, good monochromatic performance, and rich emission spectrum. They play an extremely important role in the fields of luminescent materials, displays, OLEDs, etc. , Poor processability and other defects also limit the further functionalization and deviceization of rare earth complexes. Studies have shown that combining rare earth complexes with inorganic substrates such as zeolite and clay can effectively improve their light stability, thermal stability and processability. Among many matrix materials, hectorite can swell in water ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F5/00C09K11/06
CPCC07F5/003C09K11/06C09K2211/1044C09K2211/1092C09K2211/182
Inventor 李志强李焕荣侯朝晖
Owner HEBEI UNIV OF TECH
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