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Paper chips with extended chemiluminescence

A chemiluminescence, paper chip technology, applied in chemiluminescence/bioluminescence, chemical analysis by catalysis, analysis by chemical reaction of materials, etc. Simple method, good water solubility and low toxicity

Inactive Publication Date: 2021-09-28
SHAANXI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the above methods, to achieve delayed luminescence, the operation is relatively complicated or the participation of additional substances makes the system complex

Method used

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  • Paper chips with extended chemiluminescence
  • Paper chips with extended chemiluminescence
  • Paper chips with extended chemiluminescence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Cu-MOF was dissolved in BR buffer solution with pH 9.5 to prepare 0.1 mg / mL Cu-MOFs solution, and then the loading capacity of Cu-MOF was 8.8×10 -6 mg / mm 2 , 2.5 μL of 0.1 mg / mL Cu-MOFs solution was dropped onto Whatman No. 1 filter paper with a diameter of 6 mm, and dried naturally to obtain a paper chip with extended chemiluminescence function. Depend on figure 1 It can be seen that Cu-MOF is a rod-like structure with a particle size of 2 μm, which is embedded in the fiber structure of paper.

Embodiment 2

[0026] Cu-MOF was dissolved in BR buffer solution with pH 9.5 to prepare 0.5 mg / mL Cu-MOFs solution, and then according to the loading capacity of Cu-MOF was 4.4×10 -5 mg / mm 2 , 2.5 μL of 0.5 mg / mL Cu-MOFs solution was dropped onto Whatman No. 1 filter paper with a diameter of 6 mm, and dried naturally to obtain a paper chip with extended chemiluminescence function.

Embodiment 3

[0028] Dissolve Cu-MOF in BR buffer solution with pH 9.5 to prepare 1 mg / mL Cu-MOFs solution, and then according to the loading capacity of Cu-MOF to be 8.8×10 -5 mg / mm 2 , 2.5 μL of 1 mg / mL Cu-MOFs solution was dropped onto Whatman No. 1 filter paper with a diameter of 6 mm, and dried naturally to obtain a paper chip with extended chemiluminescence function.

[0029]The inventor uses the paper chip that embodiment 1 obtains for luminol-H 2 o 2 Chemiluminescent system, the specific method is as follows:

[0030] Use a flow syringe pump to inject 20 μL of luminol-H with a pH of 11 onto the paper chip obtained in Example 1. 2 o 2 The mixed solution was recorded with a chemiluminescence instrument to produce chemiluminescent signals. And the same amount of BR buffer solution and containing the same molar equivalent of Cu 2+ CuCl 2 Add the aqueous solution dropwise to Whatman No. 1 filter paper with a diameter of 6mm, and then inject luminol-H in the same way 2 o 2 The mi...

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Abstract

The invention discloses a paper chip with the function of prolonging chemiluminescence. After the reaction, the water-soluble metal-organic complex Cu-MOF was obtained by freeze-drying as a catalyst, and the filter paper was used as a carrier. Cu-MOF was dissolved in a BR buffer solution with a pH of 8-10, and then the solution was dropped on the filter paper. , dried naturally to obtain paper chips. The present invention is aimed at traditional luminol-H that occurs in solution 2 o 2 The chemiluminescence system, by changing the carrier of the reaction—making the reaction occur on the surface of the solid-phase paper, with the help of the unique capillary structure of the paper, affects the contact time between the luminescence system and the catalyst, thereby prolonging the time for the chemiluminescence intensity to reach the maximum value, Realize the effect of delayed glow. The preparation method of the paper chip of the present invention is simple, low in cost, green and environment-friendly, and can be used in the fields of underwater lighting, emergency rescue and the like.

Description

technical field [0001] The invention belongs to the technical field of making chemiluminescence paper chips, and in particular relates to a paper chip with the function of prolonging chemiluminescence. Background technique [0002] Paper chips are favored by researchers in the research field due to their ease of use and good biodegradability. The paper's pore structure and capillary action facilitate the flow of liquids that are dropped onto the paper chips. The large specific surface area caused by its unique pore structure also makes it a carrier successfully used for reactions. In recent years, detection methods on paper chips have gradually diversified, and common methods include electrochemiluminescence detection (ECL), colorimetric detection, fluorescence detection (FL), chemiluminescence detection (CL), and electrochemical methods. Among these detection methods, chemiluminescence detection is widely used due to its advantages of rapidity, simple instrumentation, low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/76G01N31/10
CPCG01N21/76G01N31/10
Inventor 刘伟郭小艳陈莹张柳
Owner SHAANXI NORMAL UNIV
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