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A 9-acetylanthracene eutectic material with adjustable up-conversion luminescence and its preparation method

A eutectic material, acetyl anthracene technology, applied in the field of fluorescent materials and preparation based on 9-acetyl anthracene eutectic structure, can solve the problems of easy photochemical reaction, spatial structure complexity, unpredictability of solid-state emission color, etc. , to achieve the effect of improving optical stability, broadening the application space and preparation range

Active Publication Date: 2017-06-06
闫东鹏 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the spatial structure of the molecule when it forms a solid, the solid-state emission color of 9-acetylanthracene is unpredictable. At the same time, 9-acetylanthracene is a kind of photosensitive molecule, which is prone to photochemical reaction

Method used

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  • A 9-acetylanthracene eutectic material with adjustable up-conversion luminescence and its preparation method
  • A 9-acetylanthracene eutectic material with adjustable up-conversion luminescence and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Weigh 0.044g of 9-acetyl anthracene and dissolve it in 10mL of acetone, fully dissolve to obtain solution A;

[0023] 2. Weigh 0.0356g of 1,2,4,5-tetracyanobenzene and dissolve it in 10mL of methanol. After the dissolution is complete, solution B is obtained;

[0024] 3. The solutions A and B were evenly mixed under ultrasonic conditions, and left to stand in the dark, and crystals formed after one week.

[0025] To characterize the product:

[0026] According to single crystal XRD analysis, 9-acetylanthracene and 1,2,4,5-tetracyanobenzene form co-crystal products through charge transfer force;

[0027] It can be seen from the fluorescence spectrum that the luminescence peak of the eutectic is obviously red-shifted compared with that of 9-acetylanthracene.

[0028] Under 800nm ​​laser excitation, there is an obvious red light up-conversion signal, such as figure 1 shown.

Embodiment 2

[0030] 1. Weigh 0.044g of 9-acetyl anthracene, 0.0546g of 4-bromo-2,3,5,6-tetrafluorobenzoic acid;

[0031] 2. Mix the two evenly and put them into a ball mill, add 0.1mL of acetone, and grind at 15r / s for 30min;

[0032] 3. Take the ground powder and dissolve it in 20mL of acetone, place it under dark conditions, and wait for the solvent to evaporate completely to obtain the eutectic product.

[0033] Characterize the product:

[0034] From the ground powder PXRD, it can be seen that new substances are produced; from the single crystal XRD analysis, it can be seen that the eutectic product is formed through hydrogen bond interaction;

[0035] It can be seen from the fluorescence analysis that the quantum yield and lifetime of this compound are improved compared with 9-acetylanthracene, and the emission peak position is blue-shifted from 476nm to 450nm;

[0036] Under 800nm ​​laser excitation, blue light up-conversion signals appear, such as figure 2 shown.

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Abstract

The invention discloses a 9-acetyl anthracene eutectic material with adjustable up-conversion luminescence and a preparation method thereof, and belongs to the field of solid light-emitting materials. A new eutectic compound is formed after naphthyl or phenyl compounds substituted with halogen, carboxylic acid, hydroxide radical and cyan are selected as the eutectic unit to react with 9-acetyl anthracene through a mechanical grinding method by means of halogen bonds, hydrogen bonds, pi-pi acting force and charge transfer acting force. The series of eutectic products have the up-conversion emission characteristic; meanwhile, up-conversion luminescence colors and strength of different eutectic materials can be adjusted. The luminescence service life and quantum yield of the eutectic material formed together with phenyl cyanide are multiplied compared with pure 9-acetyl anthracene. In addition, the method has the advantages of being easy to implement, high in yield, small in pollution, beneficial to large-scale production and the like, and the good application prospects of the material in the field of solid light-emitting materials are embodied.

Description

technical field [0001] The invention belongs to the field of solid luminescent materials, and particularly relates to a fluorescent material based on a 9-acetylanthracene eutectic structure and a preparation method, which provides a new design idea and a feasible solution for molecular fluorescent materials with up-converting adjustable characteristics. Background technique [0002] Up-conversion luminescence was developed in the 1960s and widely used as a luminescence technology for infrared or near-infrared conversion. Since the 1980s, the up-conversion effect of rare earth ions has been used to cover visible light wavelengths such as red, green and blue. Continuous room temperature operation and higher output power up-conversion luminous output can be obtained in all ranges. The application of up-conversion luminescent materials in laser technology, optical fiber communication technology, optical information storage and display and other fields has made great progress bas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/06C30B7/06C30B7/14C30B29/54
Inventor 闫东鹏李树珍宋明
Owner 闫东鹏
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