Rare-earth metal luminous sensitizing agent, rare earth complex thereof, synthesis and use

A technology of rare earth metals and sensitizers, applied in the field of sensitizers, can solve problems such as weak light absorption ability

Active Publication Date: 2009-08-05
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since the f—f configuration transition of rare earth metals is forbidden by spectral selectivity, the light absorption ability is weak, and its molar absorption coefficient is usually less than 1M -1 cm -1 , so it is almost impossible to cause luminescence by directly exciting rare earth metals

Method used

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  • Rare-earth metal luminous sensitizing agent, rare earth complex thereof, synthesis and use
  • Rare-earth metal luminous sensitizing agent, rare earth complex thereof, synthesis and use

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Embodiment Construction

[0014] 1. Preparation of rare earth metal luminescent sensitizers and their complexes

[0015] Rare earth metal luminescent sensitizer 1-(3,5-phthalic acid group)-1H-1,2,3-triazole (H 2 Synthesis of dcpt):

[0016] Weigh 5-aminoisophthalic acid (25mmol), add concentrated HCl and H 2 O each 8mL, heated until all solids dissolved, poured into H2O cooled to 0°C 2 O (400mL) for use; weigh NaNO 2 (25mmol), add H 2 O (5mL), after cooling to 0°C, slowly drop into the above-mentioned 5-aminoisophthalic acid solution and stir rapidly for about 30 minutes, then add NaN 3 Aqueous solution (30mmol NaN 3 dissolved in 10mL H 2 O), a white precipitate was generated, filtered by suction, washed with distilled water and dried to obtain the intermediate product 5-azidophthalic acid. Weigh the intermediate product 5-azidophthalic acid (10mmol), add propiolic acid (0.62mL), MeOH (150mL) and H 2 O (50mL), after stirring the reaction for 10 minutes, add vitamin C sodium (1mmol) and CuSO 4 ...

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Abstract

The invention provides a rare earth metal luminous sensitizer, a rare earth complex thereof and synthesis and application thereof, and relates to the field of chemical synthesis. The sensitizer is prepared by four steps which are diazo reaction, acyl azide substitution, cycloaddition and hydrothermal decarboxylation. A luminous material of the rare earth complex is prepared by hydrothermal reaction and slow cooling. The mol ratio of the materials of Ln(NO3)3.5H2O, H2dcpt and NaOH is 1:1:1, H2O is used as a solvent, the temperature in the hydrothermal reaction is raised to be 180 DEG C, and the cooling speed is 1 DEG C/hour. Tests show that H2dcpt is a quite effective sensitizer, and can improve the fluorescence radiation of the rare earth metal. The rare earth complex can be used to produce luminescent devices.

Description

technical field [0001] The invention relates to a rare earth metal luminescent sensitizer H 2 dcpt and its rare earth complex luminescent material [Ln(Hdcpt)(dcpt)(H 2 O) 2 ] Preparation and application of complexes, where H 2 dcpt=1-(3,5-phthalic acid group)-1H-1,2,3-triazole, take off the hydrogen atom on one carboxyl group is Hdcpt, take off the hydrogen atom on two carboxyl groups is dcpt. Background technique [0002] As a national strategic resource and a treasure house of raw materials for optical materials, rare earth elements have attracted increasing attention in their value and application. Countries all over the world have invested huge manpower and material resources in the development and research of rare earth functional materials. In the research and development of rare earth functional materials, especially rare earth luminescent materials are attracting attention. Since the 4f orbital of rare earth ions is shielded by the 5s and 5p orbitals, the f—f tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D249/06C07F5/00C09K11/06H01L51/54
Inventor 邹文强郑发鲲李艳郭国聪陈其湧吴美凤
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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