Preparation method of rare-earth fluorescent microspheres

A technology of rare earth fluorescence and microspheres, which is applied in the field of preparation of rare earth fluorescent microspheres, can solve the problems of difficulty in maintaining long-term luminescence, poor plasticity, and weak luminescence intensity, and achieve significant luminescence effects, increased luminescence time, and improved luminescence time Effect

Inactive Publication Date: 2015-11-25
JIANGSU ZHENYU ENVIRONMENTAL PROTECTION TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention: the plasticity of the products made of the current general fluorescent materials is relatively poor, and the fluorescent materials themselves contain a large amount of harmful substances to the human body, which will increase the incidence of human cancer. In addition, the luminous intensity of the current fluorescent materials is relatively weak, It is difficult to maintain long-term luminescence, and a preparation of rare earth fluorescent microspheres is provided. The method first prepares

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1

[0021] First, take 100 mL of methyl methacrylate and put it into a 250 mL separatory funnel, wash three times with 5% sodium hydroxide solution, and use 30 mL each time until colorless, and then rinse with deionized water until the pH is 7 Then, it was dried with anhydrous sodium sulfate for 5 days to obtain refined methyl methacrylate; then, 50 mL of absolute ethanol was added to a 150-mL conical flask, placed in a water bath and heated to 50°C, and then 5 g of azobisisobutyronitrile was added, Shake the shaker until it is completely dissolved, quickly filter the filtrate, cool the filtrate until white crystals separate out, filter with a Buchner funnel, and put the crystals into a vacuum drying oven to dry to obtain refined azobisisobutyronitrile; In a 150mL three-necked flask, add 5mg of europium oxide, 1g of α-methacrylic acid and 50mL of water, heat it to 80°C in a water bath, pour in condensed water, and place it on a magnetic stirrer to stir the react...

Example Embodiment

[0023] Example 2

[0024] First, take 150 mL of methyl methacrylate into a 250 mL separatory funnel, wash 4 times with 5% sodium hydroxide solution, each time using 35 mL until colorless, and then rinse with deionized water until the pH is 7.5 Then, it was dried with anhydrous sodium sulfate for 6 days to obtain refined methyl methacrylate; then 80 mL of absolute ethanol was added to a 150-mL conical flask, placed in a water bath and heated to 53 ° C, and then 7 g of azobisisobutyronitrile was added, Shake the shaker until it is completely dissolved, quickly filter the filtrate, cool the filtrate until white crystals separate out, filter with a Buchner funnel, and put the crystals into a vacuum drying oven to dry to obtain refined azobisisobutyronitrile; In a 150mL three-necked flask, add 8mg europium oxide, 1.2g α-methacrylic acid and 80mL water, heat it to 85°C in a water bath, pour in condensed water, and place it on a magnetic stirrer to stir the reaction for 2.5h. The stirr...

Example Embodiment

[0026] Example 3

[0027] First, take 200 mL of methyl methacrylate and put it into a 250 mL separatory funnel, wash 5 times with 5% sodium hydroxide solution, each time using 40 mL until colorless, and then rinse with deionized water until the pH is 8 After that, it was dried with anhydrous sodium sulfate for 7 days to obtain refined methyl methacrylate; then, into a 150-mL conical flask, add 100 mL of anhydrous ethanol, put it in a water bath and heat to 55°C, then add 10 g of azobisisobutyronitrile, Shake the shaker until it is completely dissolved, quickly filter the filtrate, cool the filtrate until white crystals separate out, filter with a Buchner funnel, and put the crystals into a vacuum drying oven to dry to obtain refined azobisisobutyronitrile; In a 150mL three-necked flask, add 10mg of europium oxide, 2g of α-methacrylic acid and 100mL of water, heat it to 90°C in a water bath, pour in condensed water, and place it on a magnetic stirrer to stir the reaction for 3h...

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Abstract

The invention relates to a preparation method of rare-earth fluorescent microspheres, belonging to the technical field of fluorescent substance preparation. The method comprises the following steps: carrying out pretreatment to obtain a monomer refined methyl methacrylate and an initiator refined azodiisobutyronitrile, preparing a rare-earth high-luminescent-intensity three-element coordination compound with polymerization activity by a coprecipitation process, copolymerizing the three-element coordination compound with methyl methacrylate to obtain a high-molecular-weight high-polymer rare-earth metal copolymer solid material which is the rare-earth fluorescent microspheres. The example proves that the rare-earth fluorescent microspheres can be used in the aspects of biological detection, fluorescent markers, special-type inks, medical immune detection and cell markers, can not injure the human body, and has stable and efficient luminous emissivity and longer fluorescent lifetime (by 30% or above).

Description

technical field [0001] The invention relates to a preparation method of rare earth fluorescent microspheres, belonging to the technical field of fluorescent powder preparation. Background technique [0002] Fluorescent microspheres refer to solid particles with a diameter ranging from nanometer to micrometer, loaded with fluorescent substances, and can be stimulated by external energy to emit fluorescence. The shape can be any shape, and the typical shape is spherical. The carriers of fluorescent microspheres are mostly organic or inorganic polymer materials, which have a relatively stable morphological structure to stimulate light behavior, and are less affected by external conditions such as solvents, heat, electricity, and magnetism than pure fluorescent compounds. As a new type of carrier material, it has been widely used in the field of biomedicine, such as directional drug delivery in biochemistry and biomedicine, medical latex reagents, biomolecular labeling and traci...

Claims

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Application Information

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IPC IPC(8): C08F220/14C08F230/04C09K11/02C09K11/06
Inventor 郭迎庆林大伟张帆
Owner JIANGSU ZHENYU ENVIRONMENTAL PROTECTION TECH
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