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Method for rapidly preparing carbon-oxygen co-doped boron nitride room-temperature phosphorescent material through microwave heating

A room temperature phosphorescence and microwave heating technology, applied in the directions of luminescent materials, chemical instruments and methods, etc., can solve the problems of limited types of room temperature phosphorescence materials, unfavorable afterglow visual observation, limited material quality preparation, etc., to achieve excellent room temperature phosphorescence performance, easy to batch Chemical production, good water solubility

Active Publication Date: 2020-01-31
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most of the above preparation methods have problems such as high cost, complicated preparation, high toxicity, and sensitivity to water and oxygen, which greatly limit the quality preparation of materials.
In addition, most of the reported RTP materials have short fluorescence lifetimes (millisecond lifetimes), and the fast-decaying emission is not conducive to the visual observation of afterglow, which greatly limits their applications in luminescence visualization and recognition.
[0004] So far, since the intersystem transition from the excited singlet state to the excited triplet state is forbidden, it is still a challenge to obtain long-lived RTP materials. Complicated issues

Method used

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  • Method for rapidly preparing carbon-oxygen co-doped boron nitride room-temperature phosphorescent material through microwave heating
  • Method for rapidly preparing carbon-oxygen co-doped boron nitride room-temperature phosphorescent material through microwave heating
  • Method for rapidly preparing carbon-oxygen co-doped boron nitride room-temperature phosphorescent material through microwave heating

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Embodiment 1

[0037] A method for rapidly preparing a carbon-oxygen co-doped boron nitride room temperature phosphorescent material by microwave heating, comprising the following steps:

[0038] 0.618 g of boric acid was dissolved in 10 mL of deionized water, and stirred magnetically for 30 minutes to obtain a uniform solution; 0.30 g of ethylenediamine was added thereto, and stirred magnetically for 30 minutes to obtain a mixed solution. The mixed solution was transferred to a microwave oven, and reacted for 15 minutes under the power condition of 700W, and naturally cooled to room temperature after the reaction was completed. Add 80 mL of ethanol to the obtained product, sonicate it for 10 min, then centrifuge it at 10,000 rpm for 10 min to obtain a precipitate, repeat washing 5 times, and vacuum dry the washed product at 80°C for 12 h to obtain a carbon-oxygen co-doped nitride Boron room temperature phosphorescent material.

[0039] Dissolve the carbon-oxygen co-doped boron nitride room...

Embodiment 2

[0049] A method for rapidly preparing a carbon-oxygen co-doped boron nitride room temperature phosphorescent material by microwave heating, comprising the following steps:

[0050] 0.618 g of boric acid was dissolved in 10 mL of deionized water, and stirred magnetically for 30 minutes to obtain a uniform solution; 0.612 g of ethanolamine was added thereto, and stirred magnetically for 30 minutes to obtain a mixed solution. The mixed solution was transferred to a microwave oven, and reacted for 15 minutes under the power condition of 700W, and naturally cooled to room temperature after the reaction was completed. Add 80 mL of ethanol to the obtained product, sonicate it for 10 min, then centrifuge it at 10,000 rpm for 10 min to obtain a precipitate, repeat washing 5 times, and vacuum dry the washed product at 80°C for 12 h to obtain a carbon-oxygen co-doped nitride Boron room temperature phosphorescent material.

Embodiment 3

[0052] A method for rapidly preparing a carbon-oxygen co-doped boron nitride room temperature phosphorescent material by microwave heating, comprising the following steps:

[0053] 0.618g of boric acid was dissolved in 10mL of deionized water, and magnetically stirred for 30 minutes to obtain a uniform solution; 1.055g of diethanolamine was added thereto, and magnetically stirred for 30 minutes to obtain a mixed solution. The mixed solution was transferred to a microwave oven, and reacted for 15 minutes under the power condition of 700W, and naturally cooled to room temperature after the reaction was completed. Add 80 mL of ethanol to the obtained product, sonicate it for 10 min, then centrifuge it at 10,000 rpm for 10 min to obtain a precipitate, repeat washing 5 times, and vacuum dry the washed product at 80°C for 12 h to obtain a carbon-oxygen co-doped nitride Boron room temperature phosphorescent material.

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Abstract

The invention provides a method for quickly preparing a carbon-oxygen co-doped boron nitride room-temperature phosphorescent material by microwave heating, and the method comprises the following steps: adding a carbon-nitrogen source into a boric acid water solution to obtain a mixed solution, carrying out microwave heating on the mixed solution to react, cooling, washing and drying to obtain thecarbon-oxygen co-doped boron nitride room-temperature phosphorescent material. The method has the advantages of convenient operation of the preparation process, low device requirements, short reactiontime, mild reaction conditions, simple post-treatment, environmental protection, easily available reaction raw materials, low cost, and easy batch production. The obtained carbon-oxygen co-doped boron nitride room-temperature phosphorescent material shows a green room-temperature phosphorescent phenomenon in a solid state, and the obtained carbon-oxygen co-doped boron nitride has good water solubility and has blue fluorescence in aqueous solution and powder states. The obtained carbon-oxygen co-doped boron nitride room-temperature phosphorescent material can be used for display materials andhigher-level anti-counterfeiting and information encryption.

Description

technical field [0001] The invention relates to a method for rapidly preparing a carbon-oxygen co-doped boron nitride room-temperature phosphorescent material by microwave heating, and belongs to the technical field of functional materials. Background technique [0002] In recent years, room temperature phosphorescent (RTP) materials have broad application prospects in the fields of optical imaging, biotherapy, display devices, sensors, photocatalysis, and information protection due to their long-lived excited states and delayed luminescence properties. However, due to the sensitivity of the triplet state to temperature and oxygen, the phosphorescent properties of the material can only be observed at ultra-low temperature and oxygen-free conditions, and the strict phosphorescence conditions greatly limit its application in various high-tech fields. [0003] At present, the most commonly used strategies for preparing RTP materials are as follows: one is to introduce heavy ato...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65
CPCC09K11/65
Inventor 廉刚韩生会孙军威孙朝阳肖风龙崔得良
Owner SHANDONG UNIV
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