Hydrogel material containing macrocyclic rare earth complex and preparation method and application thereof

A technology of rare earth complexes and hydrogels, which is applied in the fields of analytical materials, luminescent materials, and material excitation analysis. It can solve the problems of reduced fluorescence intensity, difficult biodegradation, and poor biocompatibility, and achieves high color purity and easy degradation. , post-processing simple effects

Active Publication Date: 2018-07-10
YUNNAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, silica and synthetic polymer materials have poor biocompatibility and are not easy to biodegrade.
In addition, the ligands selected for rare earth composite materials prepared by traditional methods are generally β-diketone or aromatic carboxylic acid series. When such organic ligands form complexes with rare earth ions, solvent water molecules often participate in coordination. leading to a decrease in fluorescence intensity

Method used

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  • Hydrogel material containing macrocyclic rare earth complex and preparation method and application thereof
  • Hydrogel material containing macrocyclic rare earth complex and preparation method and application thereof
  • Hydrogel material containing macrocyclic rare earth complex and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Add 0.5 g of sodium alginate into 100 mL of deionized water, and stir magnetically at room temperature until completely dissolved. Then, using a medical syringe, sodium alginate sol was added dropwise to 50mL of 0.03M terbium trichloride aqueous solution, and after aging for 24 hours, it was fully washed with deionized water to obtain sodium alginate / Tb 3+ Hydrogel spheres. Weigh 0.2 g of tetrakis(4-carboxyphenyl) porphine, add 40 mL of deionized water, adjust the pH value with 0.1 M sodium hydroxide dilute solution, and make the pH of the solution reach 9. Alginate / Tb 3+ The hydrogel pellets were added to an aqueous solution of tetrakis(4-carboxyphenyl)porphine sodium salt, stirred slowly on a magnetic stirrer for 12 hours, and then fully washed with deionized water to remove residual salt. Finally, soak the obtained TCPP / Tb / Alg pellets with deionized water to obtain a luminescent hydrogel material.

Embodiment 2

[0035] Add 0.8 g of sodium alginate into 100 mL of deionized water, and stir magnetically at room temperature until it is completely dissolved and becomes a sol. Then, using a medical syringe, sodium alginate sol was added dropwise to 50mL 0.04M terbium trichloride aqueous solution, aged for 24 hours and then fully washed with deionized water to obtain sodium alginate / Tb 3+ Hydrogel spheres. Weigh 0.2 g of tetrakis(4-carboxyphenyl) porphine, add 40 mL of deionized water, adjust the pH value with 0.1 M sodium hydroxide dilute solution, and make the pH of the solution reach 10. Alginate / Tb 3+ The hydrogel pellets were added to an aqueous solution of tetrakis(4-carboxyphenyl)porphine sodium salt, stirred slowly on a magnetic stirrer for 12 hours, and then fully washed with deionized water to remove residual salt. Finally, soak the obtained TCPP / Tb / Alg pellets with deionized water to obtain a luminescent hydrogel material.

Embodiment 3

[0037] Add 1.0 g of sodium alginate into 100 mL of deionized water, and stir magnetically at room temperature until it is completely dissolved and becomes a sol. Then, using a medical syringe, sodium alginate sol was added dropwise to 50mL of 0.06M terbium trichloride aqueous solution, and after aging for 24 hours, it was fully washed with deionized water to obtain sodium alginate / Tb 3+ Hydrogel spheres. Weigh 0.4 g of tetrakis(4-carboxyphenyl) porphin, add 80 mL of deionized water, adjust the pH value with 0.1 M sodium hydroxide dilute solution, and make the pH of the solution reach 11. Alginate / Tb 3+ The hydrogel pellets were added to an aqueous solution of tetrakis(4-carboxyphenyl)porphine sodium salt, stirred slowly on a magnetic stirrer for 12 hours, and then fully washed with deionized water to remove residual salt. Finally, soak the obtained TCPP / Tb / Alg pellets with deionized water to obtain a luminescent hydrogel material.

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Abstract

The invention discloses an eco-friendly light-emitting hydrogel material containing a macrocyclic rare earth-terbium complex and a preparation method and application thereof. The eco-friendly light-emitting hydrogel material is TCPP / Tb / Alg. TCPP is tetrakis(4-carboxyphenyl)porphin, Tb is a rare earth terbium ion, Alg is sodium alginate and the material is in a form of hydrogel. In the hydrogel, the macrocyclic rare earth-terbium complex is connected to a sodium alginate network skeleton through covalent bonding. The decomposition temperature is 200 DEG C. The preparation method is carried outat the normal temperature under the normal pressure, utilizes cheap water as a solvent and is environment friendly. The material post-treatment is simple and easy. The hydrogel material has substantially no toxicity to rat thoracic aortic endothelial cells, good biocompatibility, and good recognition effects on transition metal ions and especially on Fe<3+> ions. The eco-friendly light-emitting hydrogel material can be used as a potential identification material for metal ions.

Description

technical field [0001] The invention belongs to a hydrogel luminescent composite material, in particular to a hydrogel material containing a macrocyclic rare earth complex, a preparation method and an application. Background technique [0002] The preparation of rare earth composite luminescent materials can further expand the application range of rare earth complexes. The traditional method is to dope rare earth complexes into some matrix to improve the stability of the material. The matrix material used is generally silicon dioxide or synthetic polymer materials. However, silica and synthetic polymer materials have poor biocompatibility and are not easy to biodegrade. In addition, the ligands selected for rare earth composite materials prepared by traditional methods are generally β-diketone or aromatic carboxylic acid series. When such organic ligands form complexes with rare earth ions, solvent water molecules often participate in coordination. resulting in a decrease ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B37/04C09K11/06G01N21/64
CPCC08B37/0084C09K11/06C09K2211/182G01N21/643
Inventor 刘丰祎张泽宇朱晗寇军锋范文涛
Owner YUNNAN NORMAL UNIV
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