Method for preparing rare earth aromatic carboxylic acids mesoporous red light material

An aromatic carboxylic acid and luminescent material technology, which is applied in luminescent materials, chemical instruments and methods, and optical devices to transmit sensing components, etc., to achieve the effects of regular and orderly microscopic morphology and simple and easy preparation methods.

Inactive Publication Date: 2008-08-06
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no report on the preparation of a rare earth aromatic carboxylic acid mesoporous red light material by assembling a rare earth aromatic carboxylic acid complex with a clear structure into a mesoporous material at home and abroad.

Method used

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  • Method for preparing rare earth aromatic carboxylic acids mesoporous red light material
  • Method for preparing rare earth aromatic carboxylic acids mesoporous red light material

Examples

Experimental program
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Effect test

Embodiment 1

[0026] (1) Synthesis of europium-o-phenylacetic acid-o-phenanthroline complex

[0027] Add 0.20mmol Eu(NO 3 ) 3 ·6H 2 O, 0.30mmol o-formic acid phenylacetic acid and 0.20mmol o-phenanthroline, after stirring at room temperature for half an hour, pour it into a 15mL polytetrafluoroethylene-lined stainless steel reactor, and crystallize at 110°C for 72 hours, slowly Cool to room temperature. The obtained product was suction-filtered and washed several times with deionized water and absolute ethanol to obtain a white europium-o-formic acid phenylacetic acid-o-phenanthroline complex polycrystalline powder sample.

[0028] (2) Synthesis reaction of mesoporous MCM-41

[0029] Add 20mL of deionized water to 0.80g of cetyltrimethylammonium bromide (CTAB) surfactant, stir at 40°C for 30 minutes to dissolve it, then add 10mL of concentrated ammonia water, and add 2mL of Orthoethyl silicate (TEOS), continue to stir for 24 hours, put the obtained colloidal liquid into a stainless ste...

Embodiment 2

[0034] (1) Synthesis of europium-o-formic acid phenylacetic acid-2,2'-bipyridine complex

[0035] Add 0.40mmol Eu(NO 3 ) 3 ·6H 2 O, 0.60mmol o-formic acid phenylacetic acid and 0.40mmol 2,2'-bipyridine, stirred at room temperature for half an hour, poured into a 15mL stainless steel reaction kettle lined with polytetrafluoroethylene, and crystallized at 110°C for 72 Hours, slowly cooled to room temperature. The resulting product was suction-filtered and washed five times with deionized water and absolute ethanol to obtain a white polycrystalline powder sample of europium-o-formic acid phenylacetic acid-2,2'-bipyridine complex.

[0036] (2) Synthesis reaction of mesoporous MCM-41

[0037]Add 20mL of deionized water to 0.80g of cetyltrimethylammonium bromide (CTAB) surfactant, stir at 60°C for 15 minutes to dissolve it, then add 10mL of concentrated ammonia water, and then stir vigorously Add 2 mL of tetraethyl orthosilicate (TEOS), continue to stir for 24 hours, put the ob...

Embodiment 3

[0041] (1) Synthesis of europium-5-hydroxyisophthalic acid-phenanthroline complex

[0042] Add 0.30mmol Eu(NO 3 ) 3 ·6H 2 O, 0.45mmol 5-hydroxyisophthalic acid and 0.30mmol o-phenanthroline were stirred at room temperature for half an hour and then poured into a 15mL polytetrafluoroethylene-lined stainless steel reactor, and crystallized at 130°C for 80 Hours, slowly cooled to room temperature. The obtained product was suction-filtered and washed 6 times with deionized water and absolute ethanol to obtain a white polycrystalline powder sample of europium-5-hydroxyisophthalic acid-o-phenanthroline complex.

[0043] (2) Synthesis reaction of mesoporous MCM-41

[0044] Add 25mL of deionized water to 1.16g of cetyltrimethylammonium bromide (CTAB) surfactant, heat and stir to dissolve it, then add 12mL of concentrated ammonia water, and then add 4mL of tetraethyl orthosilicate under vigorous stirring (TEOS), continue to stir for 32 hours, put the obtained colloidal liquid into...

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Abstract

The invention belongs to the nano mesoporous material preparation technology field, in particular to the synthesis technology of rare earth aromatic carboxylic acids mesoporous red luminescent material. The invention adopts a two-step method, firstly synthesizing complex which has distinct and stable structure and bright light-emitting, then assembling to the pore passage of MCM-41 mesoporous material, thereby synthesizing red mesoporous material which has stable and high ordered chemical and thermodynamic properties. The process which is provided by the invention is simple and easy to operate, has the characteristics of controllability and quantification. And the rare earth aromatic carboxylic acids mesoporous red luminescent material has long service life and high light-emitting quantum efficiency, regular ordered microcosmic topography, which can be extensively applied on the fields of luminescent material, catalyst material, sorbent material, nano reactor and photoelectric sensor and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of mesoporous materials, and in particular relates to a preparation method of rare earth aromatic carboxylic acid mesoporous red light materials. Background technique [0002] Due to their high specific surface area, mesoporous materials have been widely used in the fields of adsorption, catalysis and separation for a long time. The superiority of mesoporous materials lies in their special mesoscopic structure and properties, ultra-high surface area (>2000m 2 / g), large pore volume (~2cm 3 / g), large and uniform adjustable pore size (2-50nm), with a stable framework structure, easy to modify the inner surface, a certain wall thickness and easy to dope amorphous framework, can be used as functional materials, adsorbents, Catalysts and their supports can also use ordered mesopores as "microreactors" to prepare nanomaterials with special optical, electrical, and magnetic properties. There a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06G01D5/26B01J20/22B01J35/00
Inventor 闫冰黄艳李颖
Owner TONGJI UNIV
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