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Luminescent material Zn(phen)(HL)2 and preparation method thereof

A technology of znso4 7h2o and complexes, applied in luminescent materials, chemical instruments and methods, zinc organic compounds, etc., can solve the problems of easy weathering, low degree of ligand conjugation, low stability, etc., and achieve the effect of not easy weathering

Active Publication Date: 2014-01-22
CHONGQING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The metal-organic light-emitting materials reported in the past mainly have two deficiencies: (1) There are deficiencies in ligand selection, and the degree of conjugation of the ligand is low. Generally speaking, the greater the degree of conjugation of the ligand, the more complex the complex The greater the degree of conjugation plane and rigid structure, the higher the luminous efficiency of the complex
(2) The stability is not high, it can be dissolved in solvents such as water, ethanol, DMF (N,N'-dimethylformamide), or it is easily weathered

Method used

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  • Luminescent material Zn(phen)(HL)2 and preparation method thereof
  • Luminescent material Zn(phen)(HL)2 and preparation method thereof
  • Luminescent material Zn(phen)(HL)2 and preparation method thereof

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Experimental program
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preparation example Construction

[0027] H used in the present invention 2 The preparation process of L can be found in reference [1].

[0028] The selected ligand H of the present invention 2 The degree of L conjugation is very large. During the reaction H 2 L has taken off an H atom and becomes HL-1 to coordinate with the zinc ion in zinc sulfate. The resulting product is H 2 L is the yield based on calculation. That is, according to the H in the reactant 2 L and Zn(phen)(HL) 2 The molar ratio of Zn(phen)(HL) that should be obtained in theory is converted into 2 quality, and then according to the actual Zn(phen)(HL) 2 The ratio of the latter to the former is the yield.

[0029] In the present invention, X-ray diffraction analysis is performed on the final product to obtain its crystal structure. And carry out a series of characterizations on the final product, such as elemental analysis, infrared, fluorescence, x-ray powder diffraction.

[0030] The present invention has also measured the luminous...

Embodiment 1

[0031] The preparation of embodiment 1 complex of the present invention

[0032] Add 35.0 mg (0.095 mmol) H in a 50 mL glass beaker 2 L, 18.0 mg (0.091 mmol) phen, 27.1 mg (0.094 mmol) ZnSO 4 , 1.8mL (23.264 mmol) DMF, 7.8mL (433.333 mmol) H 2 0, the mixture was stirred for 0.5h, then transferred into a 20mL glass bottle with a screw cap, reacted at 80°C for 3 days, cooled to room temperature naturally, and observed pale yellow crystals, which were the target product, which was filtered out from the mother liquor , washed with water and methanol in turn, and then dried naturally.

[0033] ProductZn(phen)(HL) 2 Elemental analysis of C, H, and N in the element, the calculated value (%): C, 66.43; H, 5.38; N, 2.77; the actual measured (%): C, 66.75; H, 4.99; N, 2.86. FT-IR (KBr, cm -1 ): 1635(m), 1599(m), 1555(s), 1406(s), 846(m), 723(s). Note: Elemental analysis values ​​are measured by Perkin-Elmer2400 elemental analyzer; infrared spectrum is measured by NicoletImpact410F...

Embodiment 2

[0037] The preparation of embodiment 2 complexes of the present invention

[0038] In a 50 mL glass beaker was added 36.8 mg (0.1 mmol) of H 2 L, 19.8 mg (0.1 mmol) phen, 28.8 mg (0.1 mmol) ZnSO 4 , 2mL (25.960 mmol) DMF, 8mL (444.444 mmol) H 2 0, the mixture was stirred for 0.5h, then transferred into a 20mL glass bottle with a screw cap, reacted at 80°C for 3 days, cooled to room temperature naturally, and observed pale yellow crystals, which were the target product, which was filtered out from the mother liquor , washed with water and methanol in turn, and then dried naturally.

[0039] The product was characterized by elemental analysis, infrared, fluorescence, and x-ray powder diffraction, and the data obtained were similar to those in Example 1. Illustrate that the crystal structure that makes with embodiment 2 does not change and product is purer (see Figure 6 ), performance also varies for (see Figure 5 ).

[0040] This embodiment is repeated many times, obtain...

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Abstract

The invention belongs to the technical field of luminescent materials, and concretely relates to a luminescent material Zn(phen)(HL)2 and a preparation method thereof. A technical problem to be solved is to provide a luminescent material. A technical scheme in the invention is characterized in that the molecular structure of a luminescent complex Zn(phen)(HL1)2 is shown in the specification. The invention also provides the preparation method of the complex Zn(phen)(HL)2. The invention provides a new blue luminescent material.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, in particular to the luminescent material Zn(phen)(HL) 2 and its preparation method. Background technique [0002] Metal-organic complexes have the advantages of stable structure and long service life of inorganic light-emitting materials and high luminous efficiency and spectral bandwidth of organic light-emitting materials. At the same time, the width, wavelength (color) and intensity of the light-emitting spectrum can be selected by selecting Different metal ions, organic ligands with different structures, and the addition of other ligands to form multi-component complexes can be adjusted. In 1987, Tang et al first used the metal-organic complex 8-hydroxyquinoline aluminum (AlQ 3 ) as the light-emitting layer to prepare a high-brightness light-emitting device (OLED) driven by DC low voltage; in 1993, Hamada et al. used 10-hydroxybenzoquinoline beryllium as the light-emitting la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F3/06C09K11/06
Inventor 黄坤林杨姗姗张明星陈新
Owner CHONGQING NORMAL UNIVERSITY
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