Phosphorescent carbon quantum dot-based composite material and preparation method thereof

A technology of carbon quantum dots and composite materials, applied in luminescent materials, chemical instruments and methods, nanotechnology for materials and surface science, etc. problem, to achieve the effect of simple preparation process

Active Publication Date: 2022-07-22
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a phosphorescent carbon quantum dot-based composite material and its preparation method. The phosphorescent carbon quantum dot-based composite material of the present invention is a blue-violet room temperature phosphorescent material to solve or improve the blue room temperature phosphorescent material in the prior art. At least one of the problems of rarity, short lifespan, high cost of metal-containing and complicated preparation process

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  • Phosphorescent carbon quantum dot-based composite material and preparation method thereof
  • Phosphorescent carbon quantum dot-based composite material and preparation method thereof
  • Phosphorescent carbon quantum dot-based composite material and preparation method thereof

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preparation example Construction

[0060] In view of the existing problems, the present invention provides a preparation method of a phosphorescent carbon quantum dot-based composite material, so as to solve or improve the scarcity of blue room temperature phosphorescent materials in the prior art, the short lifespan, the high metal-containing cost and the complicated preparation process. at least one question. The preparation method of the phosphorescent carbon quantum dot-based composite material in the embodiment of the present invention includes the following steps: melting and reacting a carbon source and boric acid; the carbon source is an organic compound containing a benzene ring and at least one carbon atom of the benzene ring is connected to a carboxyl group.

[0061] The phosphorescent carbon quantum dot-based composite material prepared by the method of the invention is a solid blue-violet phosphorescent carbon quantum dot-based composite material, does not contain metal, and has a simple preparation...

Embodiment 1

[0077] The preparation method of the phosphorescent carbon quantum dot-based composite material of the present embodiment comprises the following steps:

[0078] (1) 25mg of pyromellitic acid, trimesic acid and terephthalic acid are added in the boric acid of 3g respectively, fully grind and mix at normal temperature, obtain uniformly mixed pyromellitic acid, trimesic acid and p-benzene Mixed white powder of dicarboxylic acid and boric acid.

[0079] (2) The above-mentioned white powder mixtures were placed in 20 mL screw-top glass bottles, respectively, and heated and reacted in a muffle furnace at 220° C. for 10 min by a melting method.

[0080] (3) after the reaction finishes and is cooled to room temperature, take out the solid sample in the threaded glass bottle, and grind it into powder with a mortar to obtain the phosphorescence color of the present embodiment, which is respectively blue (with pyromellitic acid as carbon source), purple (with trimesic acid as the carbo...

Embodiment 2

[0092] The preparation method of the phosphorescent carbon quantum dot-based composite material of the present embodiment comprises the following steps:

[0093] (1) 100mg of pyromellitic acid, trimesic acid and terephthalic acid are added in the boric acid of 3g respectively, fully grind and mix at normal temperature, obtain respectively uniformly mixed pyromellitic acid, trimesic acid and terephthalic acid Mixed white powder of phthalic acid and boric acid.

[0094] (2) The above-mentioned white powder mixtures were placed in 20 mL screw-top glass bottles, respectively, and heated and reacted in a muffle furnace at 220° C. for 10 min by a melting method.

[0095] (3) after the reaction finishes and is cooled to room temperature, take out the solid sample in the threaded glass bottle, and grind it into powder with a mortar to obtain the phosphorescence color of the present embodiment, which is respectively blue (with pyromellitic acid as carbon source), purple (with trimesic...

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Abstract

The invention belongs to the technical field of phosphorescent luminescent materials, and particularly relates to a phosphorescent carbon quantum dot-based composite material and a preparation method thereof. The method comprises the following steps: carrying out melt reaction on a carbon source and boric acid; the carbon source is an organic compound containing a benzene ring, and at least one carbon atom of the benzene ring is connected with carboxyl. The phosphorescent carbon quantum dot-based composite material disclosed by the invention is a solid bluish violet phosphorescent carbon quantum dot-based composite material, does not contain metal, and is simple in preparation process.

Description

technical field [0001] The invention belongs to the technical field of phosphorescent light-emitting materials, and particularly relates to a phosphorescent carbon quantum dot-based composite material and a preparation method thereof. Background technique [0002] Carbon nanomaterials are a recent rookie of nanomaterials, since the first member of carbon nanomaterials, fullerenes (Fullerenes, C 60 ) was reported in 1985, carbon nanomaterials have attracted more and more attention. Carbon quantum dots (Carbon Dots, CDs) were first discovered in 2004, but did not attract much attention. In 2006, Sun et al. used a mixture of graphite powder and clay as carbon source to obtain nano-scale fluorescent CDs particles by laser ablation, which were named CDs due to their size and optical properties. [0003] CDs refer to zero-dimensional carbon nanomaterials with a size of less than 10 nm, mostly with sp 2 The skeleton structure of hybrid carbon, its lattice spacing is consistent w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65B82Y20/00B82Y30/00
CPCC09K11/65B82Y20/00B82Y30/00Y02B20/00
Inventor 刘伟峰柳晓晶刘旭光左焜
Owner TAIYUAN UNIV OF TECH
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