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Organic room-temperature phosphorescent and white-light luminescent material and preparation method thereof

A luminescent material, room temperature phosphorescence technology, applied in luminescent materials, chemical instruments and methods, organic chemistry, etc., can solve the problems of color aging, manufacturing complexity, phase separation, etc., to achieve broad application prospects, excellent warm white light emission effect

Active Publication Date: 2020-06-30
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, multi-component white light emission still has many defects, such as phase separation, color aging, manufacturing complexity, etc.

Method used

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  • Organic room-temperature phosphorescent and white-light luminescent material and preparation method thereof
  • Organic room-temperature phosphorescent and white-light luminescent material and preparation method thereof
  • Organic room-temperature phosphorescent and white-light luminescent material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Dissolve 226.23 mg (1 mmol) of 4-benzoylbenzoic acid (compound of formula I-1) in 1 mL of dichloromethane (DCM), then add 735 mg (3.5 mmol) of trifluoroacetic anhydride (TFAA), then add 167.2 mg (1mmol) carbazole, 4.9mg (0.1mmol) phosphoric acid, stirred at room temperature for 2h, column chromatography (petroleum ether / ethyl acetate=200:1, V / V), to obtain the luminescent material shown in formula II-1, its product The rate is 16%, and the reaction equation is as follows:

[0021]

[0022] The structural characterization data of the obtained luminescent material is: 1 H NMR (400MHz, DMSO) δ8.27-8.20 (m, 2H), 8.12 (d, J = 8.0Hz, 1H), 7.92 (q, J = 8.4Hz, 3H), 7.84 (d, J = 7.5Hz ,2H),7.74(dd,J=15.2,7.5Hz,2H),7.61(dd,J=13.7,6.3Hz,2H),7.50-7.37(m,5H).

Embodiment 2

[0024] In this example, the 4-benzoylbenzoic acid in Example 1 is replaced with an equimolar amount of o-benzoylbenzoic acid, and the other steps are the same as in Example 1 to obtain the luminescent material shown in formula II-2, which The yield was 43%.

[0025]

[0026] The structural characterization data of the obtained luminescent material is: 1 H NMR (300MHz, CDCl 3 )δ8.18(s,1H),7.97(dd,J=8.3,5.1Hz,3H),7.65(ddd,J=26.5,15.1,7.4Hz,3H),7.51-7.29(m,9H),7.21 (ddd,J=8.0,5.5,2.7Hz,1H).

Embodiment 3

[0028] In this example, the 4-benzoylbenzoic acid in Example 1 was replaced with 3-benzoylbenzoic acid in an equimolar amount, and the other steps were the same as in Example 1 to obtain the luminescent material shown in formula II-3, Its yield is 15%.

[0029]

[0030] The structural characterization data of the obtained luminescent material is: 1 H NMR (300MHz, CDCl 3 )δ8.15(d,J=7.8Hz,1H),8.07-7.94(m,4H),7.73(dt,J=15.2,7.5Hz,3H),7.54(dd,J=5.8,1.9Hz,3H ),7.45-7.31(m,6H).

[0031] The performance test of the luminescent material prepared by the inventor above is carried out, and the specific test is as follows:

[0032] The luminescent material is dissolved in a mixed solvent of dichloromethane and n-hexane with a volume ratio of 1:2, and then the solvent is volatilized to obtain crystals. The white light and room temperature phosphorescence properties of the obtained crystals were tested by a Hitachi F-7000 fluorescence spectrophotometer. figure 1 It is the steady-sta...

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Abstract

The invention discloses a class of organic room-temperature phosphorescent and white-light luminescent material and a preparation method thereof, wherein the structural general formula of the luminescent material is defined in the specification, and R represents any one of H, F, Cl, Br and I. According to the invention, under the condition that trifluoroacetic anhydride and phosphoric acid are used as catalysts, a benzophenone carboxylic acid compound and carbazole react to prepare the luminescent material; the luminescent material disclosed by the invention has a macroscopic phosphorescence characteristic at room temperature, so that the luminescent material has great potential application in biological imaging; and the luminescent material can realize white light emission, can be used for safe printing, and has a wide application prospect in the field of organic photoelectricity.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric materials, and specifically relates to a kind of luminescent material with organic room-temperature phosphorescent luminescence properties and white light emission, and a preparation method of the luminescent material. Background technique [0002] Photoluminescence, including fluorescence and phosphorescence, remains one of the most active areas of research in science and technology today due to its wide-ranging applications ranging from household lamps to civilian radar. [0003] Phosphorescent materials have attracted great attention of scientists in recent years due to their great application value in optoelectronic devices, environmental sensors, biological sciences and other fields. With the development of photoluminescent systems with various compositions, some unconventional structures, including aromatic organic systems as fluorophores and organic luminophores as sources of ...

Claims

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Application Information

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IPC IPC(8): C07D209/86C09K11/06
CPCC07D209/86C09K11/06C09K2211/1007C09K2211/1029Y02B20/00
Inventor 赵娜李楠杨翰枭
Owner SHAANXI NORMAL UNIV
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