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Solvent-controlled full-color-emitting copper cluster assembly fluorescent material and preparation method thereof, and application of fluorescent material to white LED devices

A fluorescent material and solvent regulation technology, which is applied in the direction of luminescent materials, semiconductor devices, chemical instruments and methods, etc., can solve the problems of energy transfer, weak luminescence of fluorescent powder, and difficult manufacturing process, and achieve low copper toxicity and green synthesis method , Experiment simple and safe effect

Inactive Publication Date: 2017-11-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Secondly, for white light devices constructed of pure metal clusters as the light-emitting layer, most of the fluorescent metal clusters have aggregation-induced quenching effects, and the resulting fluorescent powder emits extremely weak light; or energy transfer occurs when raw materials with different light colors are premixed, which affects the production process. bring difficulties

Method used

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  • Solvent-controlled full-color-emitting copper cluster assembly fluorescent material and preparation method thereof, and application of fluorescent material to white LED devices
  • Solvent-controlled full-color-emitting copper cluster assembly fluorescent material and preparation method thereof, and application of fluorescent material to white LED devices
  • Solvent-controlled full-color-emitting copper cluster assembly fluorescent material and preparation method thereof, and application of fluorescent material to white LED devices

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Add 200 μL of n-hexane and dissolve 0.06 mmol of CuCl in a 25 mL single-necked bottle 2 2H 2 O, ultrasonically dissolve the copper source completely, add 10mL of liquid paraffin, under magnetic stirring at room temperature, add 1.2mmol of octyl mercaptan, ultrasonically mix evenly, and then keep stirring at room temperature for 30min. Pour 10mL of the reacted solution into a 100mL centrifuge tube, add 20mL of dichloromethane and 40mL of ethanol successively, shake well, and centrifuge at 3000r / min for 3min; repeat the centrifugation operation of the above product three times with the same steps, and drain the product to obtain Thiol-stabilized copper nanocluster sheet assembly materials, such as figure 1 As shown, it is a blue fluorescent powder with a fluorescence peak at 490nm.

Embodiment 2

[0030] Add 200 μL of acetonitrile and dissolve 0.06 mmol of CuCl in a 25 mL single-necked bottle 2 2H 2 O, ultrasonically dissolve the copper source completely, add 10mL of liquid paraffin, under magnetic stirring at room temperature, add 1.2mmol of octyl mercaptan, ultrasonically mix evenly, and then keep stirring at room temperature for 30min. Pour 10mL of the reacted solution into a 100mL centrifuge tube, add 20mL of dichloromethane and 40mL of ethanol successively, shake well, centrifuge at 3000r / min for 3min, repeat the centrifugation operation of the above product three times with the same steps, and drain the product to obtain Thiol-stabilized copper nanocluster sheet assembly materials, such as figure 2 As shown, it is a green fluorescent powder with a fluorescence peak at 521nm.

Embodiment 3

[0032] Add 200 μL of ethanol and dissolve 0.06 mmol of CuCl in a 25 mL single-necked bottle 2 2H 2 O, ultrasonically dissolve the copper source completely, add 10mL of liquid paraffin, under magnetic stirring at room temperature, add 1.2mmol of octyl mercaptan, ultrasonically mix evenly, and then keep stirring at room temperature for 30min. Pour 10mL of the reacted solution into a 100mL centrifuge tube, add 20mL of dichloromethane and 40mL of ethanol successively, shake well, centrifuge at 3000r / min for 3min, repeat the centrifugation operation of the above product three times with the same steps, and drain the product to obtain Thiol-stabilized copper nanocluster sheet assembly materials, such as image 3 As shown, it is a yellow-green fluorescent powder with a fluorescence peak at 548nm.

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Abstract

The invention provides a high-brightness full-color-emitting copper cluster assembly fluorescent material which controls a light color to cover the whole visible light region from 490 nm to 670 nm by using different reaction solvents, a preparation method for the fluorescent material, and application of the fluorescent material to white LED illumination devices, belonging to the technical field of preparation of full-color-emitting metal cluster assemblies. According to the invention, a colloidal solution one-pot method is employed; aromatic and aliphatic mercapto groups are used for wrapping ligand; and the varieties of the reaction solvents are changed and stirring at room temperature is carried out so as to prepare the stable copper-cluster-assembled full-color-emitting two-dimensional assembly fluorescent material. The light color of the prepared fluorescent material is continuously adjustable in a range of 490 to 670 nm. The preparation method for the assembly fluorescent material is simple, fast, safe, pollution-free and suitable for batch production; in particular, the light color is easy to adjust and can cover the whole visible light region; and the prepared assembly fluorescent material has high brightness and good stability and is free of fluorescence quenching or energy transfer during premixing of white light, and thus, the assembly fluorescent material is applicable to the field of high-performance white LED illumination.

Description

technical field [0001] The invention belongs to the technical field of preparation of full-color emission metal cluster assemblies, and specifically relates to a full-color emission copper cluster assembly fluorescent material that uses different types of reaction solvents to control the light color to cover the entire visible light region at 490-670nm, a preparation method and the like. Application in preparation of pure copper cluster white light LED lighting device. Background technique [0002] Fluorescent metal nanoclusters, as potential phosphor materials for lighting and display applications, have received extensive attention in recent years. Although the research on gold-silver fluorescent nanoclusters is becoming more and more mature, fluorescent copper clusters, which are more suitable for commercial applications, have limited their research and application in the field of white LED lighting due to their poor stability, low brightness and poor light color adjustabi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/02C09K11/58H01L33/50
CPCC09K11/025C09K11/58H01L33/504
Inventor 张皓艾琳刘家乐杨柏
Owner JILIN UNIV
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