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Method for synthesizing rare-earth organic-inorganic hybrid fluorescent material

A fluorescent material, rare earth technology, applied in the field of synthesis of rare earth organic-inorganic hybrid materials

Inactive Publication Date: 2009-10-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Before the work of this patent application, there was no report on the synthesis and method of hybrid compounds of rare earth metals (Eu, Gd), 4,4'-bipyridine and phosphotungstate, neither in patent literature nor in scientific papers. Aspects of reports

Method used

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  • Method for synthesizing rare-earth organic-inorganic hybrid fluorescent material
  • Method for synthesizing rare-earth organic-inorganic hybrid fluorescent material
  • Method for synthesizing rare-earth organic-inorganic hybrid fluorescent material

Examples

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example 1

[0016] Accurately weigh 146.54mg (0.4mmol) EuCl 3 ·6H 2 O, 62.47mg (0.4mmol) of 4,4'-bpy and 596.95mg (0.2mmol) of (NH 4 ) 3 PW 12 o 40 ·3H 2 0, put into a stainless steel reaction tank with a polytetrafluoroethylene liner volume of 25ml, add 13ml of deionized water, stir evenly, and adjust the pH value to about 5-6 with 10% hydrochloric acid. Put the reactor into an oven, react at 130°C for 72 hours under constant temperature and self-generated pressure, and then cool naturally for 24 hours to room temperature. Filter through a Buchner funnel, wash with deionized water, and dry naturally at room temperature to obtain regular colorless transparent block crystals with a yield of 66%.

example 2

[0018] Accurately weigh 146.54mg (0.4mmol) EuCl 3 ·6H 2 O, 62.47mg (0.4mmol) of 4,4'-bpy and 298.48mg (0.1mmol) of (NH 4 ) 3 PW 12 o 40 ·3H 2 0, put into a stainless steel reaction tank with a polytetrafluoroethylene liner volume of 25ml, add 13ml of deionized water, stir evenly, and adjust the pH value to about 5-6 with 10% hydrochloric acid. Put the reaction kettle into an oven, react at 140°C for 72 hours under constant temperature and self-generated pressure, and then cool naturally for 24 hours to room temperature. Filtered through a Buchner funnel, washed with deionized water, and dried naturally at room temperature to obtain colorless transparent block crystals with a yield of 53%.

example 3

[0020] Accurately weigh 148.64mg (0.4mmol) GdCl 3 ·6H 2 O, 62.47mg (0.4mmol) of 4,4'-bpy and 298,48mg (0.1mmol) of (NH 4 ) 3 PW 12 o 40 ·3H 2 0, put into a stainless steel reaction tank with a polytetrafluoroethylene liner volume of 25ml, add 13ml of deionized water, stir evenly, and adjust the pH value to 5-6 with 10% hydrochloric acid. Put the reaction kettle into an oven, react at 140°C for 72 hours under constant temperature and self-generated pressure, and then cool naturally for 24 hours to room temperature. Filtered through a Buchner funnel, washed with deionized water, and dried naturally at room temperature to obtain regular colorless transparent block crystals with a yield of 72%.

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Abstract

The invention provides a novel method for synthesizing rare-earth organic phosphotungstate hybrid compound (Ln(PW11O39)(H2O)2)(H2bpy)2.6.5H2O(Ln=Eu(1), Gd(2); bpy=4,4'-bipyridyl). The hybrid compound belongs to a triclinic system, has a space group of P(-1) and is synthesized by Ln2Cl3.6H2O, 4, 4'-bipyridyl, (NH4)3PW12O40.3H2O and deionized water by a hydro-thermal method. A fluorescence spectrum displays that the compound has the obvious fluorescent characteristics.

Description

[0001] The synthesis belongs to the field of synthesis of rare earth organic-inorganic hybrid materials, and specifically relates to the synthesis of rare earth metals, organic ligands and phosphotungstate. Background technique [0002] The unique 4f outer electron shell structure of rare earth elements not only makes it have a variety of coordination numbers, but also can form a variety of geometric configurations during the coordination process. At the same time, its complexes also have outstanding optical, magnetic, electrical and catalytic properties. [0003] Hybrid materials use the hybridization of inorganic components and organic components to produce new structural types and functional properties, and have excellent application prospects and huge economic benefit potential in many aspects. Among them, the organic components are highly selective and easy to modify, and can be coordinated with various metal ions to form metal-organic complexes through electrostatic or h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C09K11/77
Inventor 李增和柳正文
Owner BEIJING UNIV OF CHEM TECH
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