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Red light-blue light dual-emission composited optical transfer material, and preparation method and application of red light-blue light dual-emission composited optical transfer material

A luminescent material, dual-emission technology, applied in the field of agricultural light conversion, to increase the utilization rate of light energy, improve stability, and reduce costs

Inactive Publication Date: 2017-04-19
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as far as we know, there is no published literature on red and blue dual-emission composite light-converting materials.

Method used

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  • Red light-blue light dual-emission composited optical transfer material, and preparation method and application of red light-blue light dual-emission composited optical transfer material
  • Red light-blue light dual-emission composited optical transfer material, and preparation method and application of red light-blue light dual-emission composited optical transfer material
  • Red light-blue light dual-emission composited optical transfer material, and preparation method and application of red light-blue light dual-emission composited optical transfer material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Example 1: Preparation of red and blue dual emission composite light conversion material

[0041] (1) Weigh 100 mg of the blue light carbon dot solution (for the preparation method, please refer to Chen Y, Zheng M, Xiao Y, etal. Advanced Materials, 2016, 28(2): 312-318), disperse in 50 mL of ethanol and deionized In a mixed solvent with a water volume ratio of 1:1, stir until the solution is clear and transparent.

[0042] (2) Next, sequentially add different masses (50mg, 100mg, 200mg) of Sr 2 Si 5 N 8 :Eu 2+ (Preparation method can refer to Li J, Lei B, Qin J, et al.Journal of the American Ceramic Society, 2013,96 (3): 873-878) and 10mL of ethyl orthosilicate, stirred reaction 2 at room temperature Hour.

[0043] (3) Red and blue dual emission silica composite powder can be obtained after filtering, drying and grinding.

[0044] The composite material of the present invention presents a red and blue double-color composite luminescent color under an ultraviolet lam...

Embodiment 2

[0046] Example 2: Preparation of red and blue dual emission composite light conversion material

[0047] (1) Measure 1mL of blue-light carbon dot solution (for the preparation method, please refer to Xie Z, Wang F, Liu C. Advanced Materials, 2012, 24(13): 1716-1721), dissolve it in 50mL of deionized water, and form by stirring homogeneous solution.

[0048] (2) Next, add 50 mg of Sr 2 Si 5 N 8 :Eu 2+ (For the preparation method, please refer to Li J, Lei B, Qin J, et al. Journal of the American Ceramic Society, 2013, 96(3):873-878) and 500 mg of cellulose, and continue stirring for 24 hours.

[0049] (3) After filtering, drying and grinding, the polymer composite luminescent material can be obtained.

[0050] The composite material exhibits red and blue two-color composite luminous color under ultraviolet light, and its corresponding fluorescence emission spectrum is as follows: image 3 Shown (test conditions: excitation wavelength 360nm). Depend on image 3 It can be...

Embodiment 3

[0051] Example 3: Preparation of red and blue dual emission composite light conversion material

[0052] (1) Weigh 100mg of blue light carbon dot solution (for the preparation method, please refer to Wang F, Xie Z, Zhang H, etal. Advanced Functional Materials, 2011, 21(6): 1027-1031), disperse in 50mL of ethanol and remove In a mixed solvent with a volume ratio of 1:1 to ionic water, stir until the solution is clear and transparent.

[0053] (2) Next, add 20 mg of CaAl in sequence 12 o 19 :Mn 2+ (For the preparation method, please refer to Li W, Zhang H, Chen S, et al. Advanced Optical Materials, 2015, 4, 427-434) and 1 mL of ethyl orthosilicate, stirred at room temperature for 2 hours.

[0054] (3) Red and blue dual emission silica composite powder can be obtained after filtering, drying and grinding.

[0055] The composite material exhibits red and blue two-color composite luminescent colors under ultraviolet light, and its emission spectra are as follows: Figure 4 Sho...

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Abstract

The invention belongs to the technical field of agricultural optical transfer, and discloses a red light-blue light dual-emission composited optical transfer material, and a preparation method and an application of the red light-blue light dual-emission composited optical transfer material. The red light-blue light dual-emission composited optical transfer material comprises a matrix and a luminous material; the matrix comprises at least one of inorganic oxide and a high molecular material; the inorganic oxide comprises at least one of silicon dioxide, titanium dioxide and aluminum oxide; the high molecular material comprises at least one of cellulose, starch, chitin, chitosan and chitosan derivatives; and the luminous material is carbon dots, or carbon dots and fluorescent powder. Ultraviolet light and a part of useful green light in sunlight are converted to red light and blue light that are useful for plant growth by using red light carbon dots and blue light carbon dots; through combined action of the matrix and the luminous material, available resources are used fully, the production cost is reduced, fluorescence quenching caused by aggregation of the luminous material is avoided, and a matrix material is endowed with new characteristic on the basis of the traditional optical thin film.

Description

technical field [0001] The invention belongs to the technical field of agricultural light conversion, and in particular relates to a red and blue dual emission composite light conversion material and its preparation method and application. Background technique [0002] Carbon dots are monodispersed, quasi-spherical fluorescent carbon-based nanomaterials with a size less than 10nm. Compared with other fluorescent materials, carbon dots have the advantages of high chemical stability, low toxicity and good biocompatibility, and have now attracted the attention and love of extensive researchers. Due to the influence of quantum size effect and dielectric confinement effect, carbon dots have shown attractive application prospects in the fields of luminescent display, laser, lighting, solar cell and biomedicine. However, it is generally difficult to obtain pure carbon dot luminescent powders due to their solid-state fluorescence quenching. [0003] Based on this, in order to pres...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/59C09K11/02C09K11/64C09K11/67
CPCC09K11/025C09K11/655C09K11/7728
Inventor 刘应亮游雅琴雷炳富肖勇郑明涛董汉武张浩然
Owner SOUTH CHINA AGRI UNIV
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