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Rare-earth terbium complex, polyurethane foam doped with rare-earth terbium complex and application thereof

A technology of polyurethane foam and terbium complex, applied in the field of polyurethane foam and rare earth terbium complex, can solve the problems of high temperature resistance, unstable luminescence, weak rare earth ion terbium luminescence, etc. Effect

Inactive Publication Date: 2017-02-22
CHONGQING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the technical problem to be solved in the present invention is: aiming at the problems such as extremely weak luminescence, unstable luminescence and short lifespan of the rare earth ion terbium, and to provide a stable luminescence and long luminescence life, which is based on aminobenzoic acid Rare Earth Terbium Complexes with Derivatives (BAA) as Organic Ligands
[0004] The present invention also provides a polyurethane foam doped with a rare earth terbium complex to solve the problems that the rare earth terbium complex is in powder form, which is not conducive to transportation and recycling, and has poor stability in water and is not resistant to high temperatures.

Method used

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  • Rare-earth terbium complex, polyurethane foam doped with rare-earth terbium complex and application thereof
  • Rare-earth terbium complex, polyurethane foam doped with rare-earth terbium complex and application thereof
  • Rare-earth terbium complex, polyurethane foam doped with rare-earth terbium complex and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The synthetic method of embodiment 1 ligand BAA:

[0047] The general synthetic route of ligand BAA is as follows:

[0048] The synthetic route of anthranilic acid:

[0049]

[0050] The synthetic route of ligand BAA:

[0051]

[0052] The specific preparation method of the ligand BAA comprises the following steps:

[0053] 1) Hydrolysis of methyl anthranilate to generate anthranilic acid: Weigh 30g (0.2mol) methyl anthranilate and 16g sodium hydroxide respectively, and pour the weighed anthranilic acid into a 200ml single-necked flask , then add 50ml of tetrahydrofuran to prepare a methyl anthranilate solution, then dissolve the weighed sodium hydroxide with 100ml of distilled water to prepare an aqueous sodium hydroxide solution, and add the aqueous sodium hydroxide solution to a single-necked flask with anthranilate Methyl formate solution was mixed. The mixed reaction solution was heated at 68° C., condensed to reflux, and reacted for 3 h. After the react...

Embodiment 2

[0056] Embodiment 2 A rare earth terbium complex, the rare earth terbium complex molecular formula is Tb(BAA) 3 2H 2 O, the structural formula is:

[0057]

[0058] Terbium complex Tb(BAA) 3 2H 2 The synthesis method of O:

[0059] Terbium complex Tb(BAA) 3 2H 2 The synthetic route of O is as follows:

[0060]

[0061] Terbium complex Tb(BAA) 3 2H 2 The specific preparation method of O comprises the following steps:

[0062] ① Weigh TbCl 3 ·6H 2 O (0.37g, 1mmol), dissolved in 20-30ml of absolute ethanol, was fully dissolved with the help of ultrasonic cleaner vibration, and the solution was pale white.

[0063] ②TbCl 3 ·6H 2 O and BAA coordinate according to the molar ratio of 1:3, so weigh BAA (0.78g, 3mmol), add it to a 100ml three-necked flask, and then add about 40ml of tetrahydrofuran to dissolve it. The color of the solution is clear and transparent.

[0064] ③ Pour the homogeneously dissolved solution in step ① into a three-necked flask, and the mixt...

Embodiment 3

[0072] Embodiment 3 doping terbium complex polyurethane foam:

[0073] The synthetic route of doped terbium complex polyurethane foam is as follows:

[0074]

[0075] The concrete preparation method of doped terbium complex polyurethane foam comprises the following steps:

[0076] 1) Preparation of polyols from ring-opened epoxidized soybean oil:

[0077] The epoxy groups in the ring-opened epoxy soybean oil and methanol were weighed at a molar ratio of 1:11, and 0.2% of the ring-opened epoxy soybean oil was added as a catalyst tetrafluoroboric acid to react to synthesize polyols. Weigh 9.5g (0.01mol) epoxy soybean oil, 14.08g (0.44mol) methanol and 0.047g tetrafluoroboric acid respectively. First add 14.08g of methanol into a round bottom flask, add 0.047g of tetrafluoroboric acid, then dropwise add epoxy soybean oil, and react at a reaction temperature of 65°C for 1.5 to 2 hours to obtain the reaction product polyol.

[0078] 2) Polyurethane foam

[0079] In this grou...

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Abstract

The invention provides a rare-earth terbium complex, polyurethane foam doped with the rare-earth terbium complex and application thereof. The rare-earth terbium complex has a molecular formula of Tb(BAA)<3>.2H2O. The polyurethane foam is prepared by the following steps: synthesizing an aminobenzoic acid derivative BAA by taking o-aminobenzoic acid and isatoic anhydride as main raw materials, performing coordination with TbCl3.6H2O according to a molar ratio of 3:1, synthesizing a terbium complex Tb(BAA)<3>.2H2O, and doping the terbium complex in polyurethane foam, thereby obtaining the polyurethane foam with the advantages of excellent luminescence property and high thermal stability. The rare-earth terbium complex and the polyurethane foam doped with the rare-earth terbium complex are used for detecting H2PO4<->, CH3COO<-> and / or F<->. According to the rare-earth terbium complex and the polyurethane foam of the rare-earth terbium complex disclosed by the invention, the luminescence stability of terbium ions is improved, the luminescence lifetime is prolonged, the preparation cost is low, and the method is simple and easy to operate and has wide application prospects in the fields such as biological materials, medical treatment, agriculture, daily use chemicals and the like.

Description

technical field [0001] The invention belongs to the technical field of rare earth complexes, in particular to rare earth terbium complexes, polyurethane foam doped with rare earth terbium complexes and applications thereof. Background technique [0002] Rare earth is a new type of functional material with optical, magnetic, electrical and biological properties at the same time. Because of its unique structure with similar 4f electron energy levels, rare earth ions have optical, electrical, magnetic, high color purity and long life. characteristics, so that rare earth luminescent materials are widely used in the fields of fluorescent probes, solid sensors and nano-luminescent materials. However, rare earth ions have disadvantages such as small absorption coefficient, extremely weak fluorescence, and extremely unstable luminescence. As a rare earth ion, terbium is usually used in green phosphors. Terbium ions have extremely weak luminescence, unstable luminescence, and short l...

Claims

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Application Information

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IPC IPC(8): C07F5/00C07C231/08C07C237/40C07C227/20C07C229/56C09K11/06G01N21/64
CPCC07C227/20C07C231/08C07F5/003C09K11/06C09K2211/182G01N21/643G01N2021/6432C07C237/40C07C229/56
Inventor 杨朝龙苏艳李又兵高宝张强
Owner CHONGQING UNIV OF TECH
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