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Synthetic method for micro-size polymer fluorescent microspheres

A technology of fluorescent microspheres and synthesis methods, applied in chemical instruments and methods, luminescent materials, coatings, etc., can solve the problems of limited application range and lack of fluorescent microsphere size, and achieve the effect of expanding the application range

Inactive Publication Date: 2011-07-06
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention develops a new method for synthesizing polymer microspheres to solve the problem of limited application range caused by the lack of micron-level fluorescent microspheres, and provides a method for synthesizing micron-scale polymer fluorescent microspheres

Method used

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  • Synthetic method for micro-size polymer fluorescent microspheres
  • Synthetic method for micro-size polymer fluorescent microspheres
  • Synthetic method for micro-size polymer fluorescent microspheres

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specific Embodiment approach 1

[0010] Specific embodiment one: the synthesis method of a kind of micron-scale polymer fluorescent microsphere of the present embodiment is carried out according to the following steps: one, Na 2 SO 3 Add it into deionized water to prepare Na with a concentration of 7.5g / L~23.5g / L 2 SO 3 solution, and then add Se powder, so that the concentration of Se in the solution is 4.4g / L-10.9g / L, in an oil bath at 55°C-65°C, feed nitrogen and evacuate oxygen for 2h-5h, and synthesize Na 2 SeSO 3 solution. 2. Add NaOH to deionized water to obtain a NaOH solution of 1.2mol / L to 2.25mol / L, then add absolute ethanol with a volume ratio of 2 to 5:1 to the NaOH solution, stir, and add NaOH after dissolving The volume ratio of the solution is 2-4.5:5 oleic acid. Then add 20g / L~30g / L of Cd(AC)··2H 2 O, the concentration is 2.5g / L~6.5g / L, and a mixed solution is obtained. The Na synthesized in step 1 2 SeSO 3 The solution is added to this mixed solution with a concentration of 0.01mol / L...

specific Embodiment approach 2

[0011] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the Na configured in step one 2 SO 3 The concentration of the solution is 10.5g / L~17.5g / L, the concentration of Se in the solution is 6.4g / L~9.9g / L, in an oil bath at 58°C~62°C, feed nitrogen and exhaust oxygen for 2.5h~4h, other The specific embodiment one is the same.

specific Embodiment approach 3

[0012] Specific embodiment three: the difference between this embodiment and specific embodiment one is: the Na configured in step one 2 SO 3 The concentration of the solution is 16.5g / L, the concentration of Se in the solution is 8.5g / L, in an oil bath at 60°C, and nitrogen is passed through to evacuate oxygen for 3.5h. Others are the same as in Embodiment 1.

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Abstract

The invention relates to a synthetic method for micro-size polymer fluorescent microspheres and aims to solve the problem of limited application range since the size of fluorescent microspheres is only defined between nanometer and submicron. The synthetic method comprises the following steps: firstly, synthesizing Na2SeSO3 solution; secondly, synthesizing quantum dots QDs1 with high quality; thirdly, preparing pure quantum dots QDs2; fourthly, adding the quantum dots QDs2 in styrene solution for shaking; fifthly, adding polyvinylpyrrolidone and absolute ethyl alcohol in a four-necked flask, then feeding N2 into the four-necked flask, and dripping the styrene solution to obtain an emulsion sample after polyreaction; and sixthly, performing centrifugal settling, washing and drying to the emulsion sample to obtain polystyrene microspheres. The quantum dots are wrapped in the polymer microspheres by the dispersion polymerization method to obtain 1-10 mu.m fluorescent microspheres, the fluorescent microspheres can be applied to the field of biomarkers, coating fillers, optical encoders and the like, and the method can be used for the synthesis of fluorescent microspheres.

Description

technical field [0001] The invention relates to a method for synthesizing micron-scale polymer fluorescent microspheres. Background technique [0002] Dispersion polymerization is a polymerization method developed in the early 1970s. Because of its advantages of simplicity and good product performance, dispersion polymerization has been fully developed in the past 30 years. When studying the polymerization conditions, the research on the mechanism of dispersed polymerization was carried out simultaneously, and great achievements were made. Tseng, Lok, Lu, Prochazka and Paine et al. made pioneering contributions. With the gradual maturity of the dispersion polymerization method and the gradual improvement of the polymerization mechanism, the dispersion polymerization is not limited to the preparation of a single type of polymer microspheres, but has developed into multi-functional, multi-morphological, and multi-type. Now, based on this method, new varieties such as cross-li...

Claims

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Application Information

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IPC IPC(8): C08F112/08C08F2/44C09K11/88C09D7/12
Inventor 孙立国战阴旭汪成黄瑶李朋
Owner HEILONGJIANG UNIV
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