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co 2 Quantitative fluorescent sensing material, preparation method and application

A technology of fluorescence sensing and CO2, which is applied in the direction of luminescent materials, material analysis and material analysis through optical means, can solve the problems of complicated sampling steps, large instrument volume, poor accuracy, etc., and achieve accurate quantitative fluorescence detection, method Simple, distraction-free effect

Active Publication Date: 2019-07-05
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the acid-base titration method is extremely cumbersome to operate, and its accuracy is poor, so it has basically no application value; although the gas chromatography method has high accuracy, it requires a large volume of equipment and complicated sampling steps, making it difficult to apply it to rapid on-site detection; Electrochemical methods mainly use CO 2 The change of potential, current or resistance brought about by the interaction with the electrode can be monitored, but its speed is slow and it is easily interfered by other acid gases or water, so the application is greatly limited
Infrared spectroscopy is the current method for monitoring CO 2 Concentration is the most widely used technique, which utilizes CO 2 The characteristic carbonyl absorption of CO is calculated according to Lambert-Beer's law 2 It has the characteristics of fast analysis speed, no pollution, and portability, but it has a fatal disadvantage: because CO has the same 2 Very similar infrared absorption, and in some cases it is difficult to avoid the generation of CO, so the signal interference caused by CO cannot be ruled out by infrared spectroscopy, which greatly affects the accuracy of detection
CO 2 As a colorless and odorless gas, it has no fluorescent signal itself, and CO 2 In addition to showing weak acidity, it does not have high chemical reactivity, so the use of fluorescence means to develop the corresponding CO 2 Fluorescent sensing technology is extremely difficult

Method used

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  • co <sub>2</sub> Quantitative fluorescent sensing material, preparation method and application
  • co <sub>2</sub> Quantitative fluorescent sensing material, preparation method and application
  • co <sub>2</sub> Quantitative fluorescent sensing material, preparation method and application

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preparation example Construction

[0036] The embodiment of the present invention provides a CO 2 A method for preparing a quantitative fluorescent sensing material, comprising the following steps:

[0037] S1, the 9,10-diacrylate anthracene H 2 ADA is dissolved in a solvent, the solvent is one of N,N-dimethylformamide, N,N-dimethylacetamide or N,N-diethylformamide, and it is prepared into 5~10mg / mL The first solution; the MnCl 2 or Mn(ClO 4 ) 2 Dissolve in water, and prepare the second solution of 50-100 mg / mL.

[0038] S2. Mix the first solution and the second solution at a volume ratio of 4:1 to 1:4, and then add dropwise a dilute acid with a hydrogen ion concentration of 0.3 to 1 mol / mL. The dilute acid is preferably dilute nitric acid or dilute hydrochloric acid. The amount of acid added dropwise is 3-7 drops to obtain a mixed solution.

[0039] S3. Seal and heat the mixed solution for 2 to 6 days, preferably sealed in a glass seed bottle for heating, and the heating temperature is 70 to 90°C to obta...

Embodiment 1

[0058] Embodiment 1 provides a CO 2 Quantitative fluorescent sensing material, which is prepared according to the following method:

[0059] Dissolve 50 mg of 9,10-diacrylate anthracene in 10 mL of N,N-dimethylformamide to prepare a 5 mg / mL first solution; 500 mg of MnCl 2 Dissolve in 10mL of water to prepare a 50mg / mL second solution.

[0060] 8 mL of the first solution was mixed with 2 mL of the second solution, and then 7 drops of dilute nitric acid with a concentration of 0.3 mol / mL were added dropwise to obtain a mixed solution.

[0061] Seal the mixed solution in a glass inoculation bottle and heat for 4 days at 80°C to obtain the target product in the form of orange needle-like crystals, namely CO 2 Quantitative fluorescent sensing materials.

[0062] Use CO 2 Quantitative fluorescent sensing materials for CO 2 The method for fluorescence detection is:

[0063] (1) Test CO 2 Quantitative raw fluorescence spectra of fluorescent sensing materials:

[0064] Weigh o...

Embodiment 2

[0079] Embodiment 2 provides a CO 2 Quantitative fluorescent sensing material is prepared according to the following process:

[0080] Dissolve 100mg of 9,10-anthracene diacrylate in 10mL N,N-dimethylacetamide to prepare a 10mg / mL first solution; 1g of Mn(ClO 4 ) 2 Dissolve in 10mL of water to prepare a 100mg / mL second solution.

[0081] 2 mL of the first solution and 8 mL of the second solution were mixed, and then 3 drops of dilute hydrochloric acid with a concentration of 1 mol / mL were added dropwise to obtain a mixed solution.

[0082] Seal the mixed solution in a glass seed bottle and heat for 2 days at 90°C to obtain the target product in the form of orange needle-like crystals, which is CO 2 Quantitative fluorescent sensing materials.

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Abstract

CO 2 Quantitative fluorescent sensing material, preparation method and application, involving a CO 2 detection technology field, the CO 2 The preparation method of the quantitative fluorescent sensing material is to dissolve 9,10-diacrylic anthracene in a solvent, and prepare the first solution of 5-10 mg / mL; 2 or Mn(ClO 4 ) 2 Dissolve in water, and prepare the second solution of 50-100 mg / mL; mix the first solution and the second solution at a volume ratio of 4:1-1:4, and then dropwise add hydrogen ion concentration of 0.3-1mol / mL Dilute acid, sealed and heated at 70-90°C for 2-6 days, the method is simple, and the prepared CO 2 Quantitative fluorescent sensing material for rapid and accurate detection of CO 2 concentration to avoid interference; apply CO 2 When quantifying fluorescent sensing materials, CO 2 The ionic liquid formed by reacting with amine compounds promotes CO 2 Quantitative fluorescent sensing material aggregates to induce luminescence, which significantly enhances its fluorescence, thereby realizing rapid and accurate detection of CO 2 Quantitative fluorescent detection of concentrations.

Description

technical field [0001] The present invention relates to a CO 2 detection technology field, and especially relates to a CO 2 Quantitative fluorescent sensing materials, preparation methods and applications. Background technique [0002] The widespread use of fossil fuels and related industrial production emissions lead to CO in the air 2 emissions are increasing year by year, and by CO 2 The greenhouse effect has obviously begun to affect the normal living environment of all human beings, so the rapid and accurate monitoring of CO in the air 2 It is of great significance to improve the living environment of human beings. In addition, accurate monitoring of CO 2 The concentration also has important application value for many industries: for example, monitoring CO in greenhouses in agricultural production 2 content can effectively increase the yield of crops; monitor CO in the medical system 2 Concentrations help reduce respiratory diseases and improve people's health; m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64C09K11/06C08G83/00
CPCC08G83/008C09K11/06G01N21/64G01N21/643C09K2211/188G01N2021/6417G01N31/223G01N2021/6432G01N2021/6439G01N2021/7786G01N33/004Y02A50/20G01N21/6428G01N21/11
Inventor 解明华杨秀丽邵荣侯贵华关荣锋
Owner YANCHENG INST OF TECH