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Imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex, and preparation method and application thereof

A technology for bipyridine and complexes, applied in the field of imidazole-4-carboxylic acid-copper-2,2'-pyridine complexes and their preparation, to achieve excellent blue light emission specificity, good fat solubility and high yield Effect

Inactive Publication Date: 2014-08-06
CAPITAL NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nitrogen-containing bidentate ligands such as 2,2'-pyridine and its derivatives, imidazole and its derivatives are used in the synthesis of luminescent metal complexes, but 2,2'-pyridine and imidazole 4,5-bis The acid is used as a mixed ligand to coordinate with divalent copper to synthesize the patented imidazole-4-carboxylic acid-copper-2,2'-pyridine complex, which has not been reported, especially with imidazole-4-carboxylic acid as an auxiliary body, synergistically enhance the luminescent properties of 2,2'-pyridine with divalent copper and patents, and there is no report

Method used

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  • Imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex, and preparation method and application thereof
  • Imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex, and preparation method and application thereof
  • Imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex, and preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 Preparation of imidazole-4-carboxylic acid-copper-2,2'-pyridine complex

[0029] in H 2 O (12ml) solvent, add Cu (NO 3 ) 2 ·3H 2 O (0.204g, 0.85mmol), 2,2'-pyridine (0.086g, 0.5mmol), imidazole 4,5-dioic acid (0.078g, 0.5mmol), NaOH (0.020g, 0.5mmol), placed in Stir on an electromagnetic stirrer for 30 minutes, place the reactant in a 25ml polytetrafluoroethylene lined reactor, seal it and place it in a high-temperature oven, keep the temperature at 160°C for five days, then drop it to room temperature at a rate of 5°C / h, and place it in the reactor Blue blocky crystals were precipitated with a yield of 60% (based on copper).

[0030] Elemental analysis value, calculated value: C43.95; H2.820; N12.06; experimental value: C44.07; H2.94; N12.13..

[0031] Infrared analysis, IR (KBr tablet) spectrum see figure 2 . 3426(s,b),1687(s),1663(s),1630(s),1518(m),1473(m),1426(m),1352(s),1335(s),1279(m ), 1087(m), 852(m), 790(m), 723(m), 657(m), 544(m).

[00...

Embodiment 2

[0036] Embodiment 2 Preparation of imidazole-4-carboxylic acid-copper-2,2'-pyridine complex

[0037] in H 2 In O (12ml) solvent, add Cu(SO 4 ) 2 ·5H 2 O (0.212g, 0.85mmol), 2,2'-pyridine (0.086g, 0.5mmol), imidazole 4,5-dioic acid (0.078g, 0.5mmol), NaOH (0.020g, 0.5mmol), placed in Stir on an electromagnetic stirrer for 30 minutes, place the reactant in a 25ml polytetrafluoroethylene lined reactor, seal it and place it in a high-temperature oven, keep the temperature at 160°C for five days, then drop it to room temperature at a rate of 5°C / h, and place it in the reactor Blue blocky crystals were precipitated with a yield of 60% (based on copper).

[0038] Elemental analysis value, calculated value: C43.95; H2.820; N12.06; experimental value: C44.07; H2.94; N12.13..

[0039] Infrared analysis, IR (KBr tablet) spectrum see figure 2. 3426(s,b),1687(s),1663(s),1630(s),1518(m),1473(m),1426(m),1352(s),1335(s),1279(m ), 1087(m), 852(m), 790(m), 723(m), 657(m), 544(m).

[0...

Embodiment 3

[0042] Embodiment 3 Preparation of imidazole-4-carboxylic acid-copper-2,2'-pyridine complex

[0043] in H 2 O (12ml) solvent, add Cu (ClO 4 ) 2 ·6H 2 O (0.315g, 0.85mmol), 2,2'-pyridine (0.086g, 0.5mmol), imidazole 4,5-dioic acid (0.078g, 0.5mmol), NaOH (0.020g, 0.5mmol), placed in Stir on an electromagnetic stirrer for 30 minutes, place the reactant in a 25ml polytetrafluoroethylene-lined reactor, seal it and place it in a high-temperature oven, and after five days at a constant temperature of 160°C, drop it to room temperature at a rate of 5°C / h. Blue blocky crystals were precipitated with a yield of 60% (based on copper).

[0044] Elemental analysis value, calculated value: C43.95; H2.820; N12.06; experimental value: C44.07; H2.94; N12.13..

[0045] Infrared analysis, IR (KBr tablet) spectrum see figure 2 . 3426(s,b),1687(s),1663(s),1630(s),1518(m),1473(m),1426(m),1352(s),1335(s),1279(m ), 1087(m), 852(m), 790(m), 723(m), 657(m), 544(m).

[0046] Figure 1a Schema...

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Abstract

The invention relates to an imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex, and a preparation method and an application thereof, wherein the structural formula of the core complex is . The preparation method of the complex allows a copper compound, imidazole-4,5-dicarboxylic acid, 2,2'-bipyridine, and inorganic base or organic base or inorganic ammonium or organic amine to react in a water phase, an organic phase or a mixed phase of the water phase and the organic phase, so as to obtain the imidazole-4-carboxylic acid-copper-2,2'-bipyridine complex. The complex can stably exist in a natural state, has a certain water solubility, good fat solubility and excellent blue light emission specificity, and thus can be used as luminescent materials or used for preparing luminescent materials. The preparation method has characteristics of easy-to-obtain raw materials, low costs, crystal-form products, high purity, and high yield.

Description

technical field [0001] The invention relates to a complex, in particular to an imidazole-4-carboxylic acid-copper-2,2'-pyridine complex which can be used for luminescent materials, a preparation method thereof and an application in the vicinity of luminescent materials. Background technique [0002] In the field of luminescence, the research of organic materials has been paid more and more attention by people. Because there are many kinds of organic compounds, good adjustability, rich colors, high color purity, and relatively flexible molecular design. However, the low luminous intensity and poor stability of organic substances have become obstacles for their industrial application as luminescent materials. Seeking to coordinate luminescent ligands with metal ions to increase their rigidity and stability has become a hot spot in the study of luminescent materials in recent years. Metal ions are also divided into two categories, one with luminescence and the other without l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F1/08C09K11/06
Inventor 鲁晓明程一锋
Owner CAPITAL NORMAL UNIVERSITY
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