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Application of infinite coordination polymer with visual alcoholic strength sensing function

A technology of alcohol content and concentration, which is applied in biological testing, material inspection products, fluorescence/phosphorescence, etc., to achieve the effect of easy on-site measurement, simple operation and high stability

Active Publication Date: 2013-09-25
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, infinite coordination polymers also have unique advantages, that is, they can wrap guest molecules in them through self-adaptive assembly, and the composite ICP materials formed have the unique properties of both ICP and guest molecules. The performance of this composite ICP material has not been reported in its application research in analytical chemistry.

Method used

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  • Application of infinite coordination polymer with visual alcoholic strength sensing function
  • Application of infinite coordination polymer with visual alcoholic strength sensing function
  • Application of infinite coordination polymer with visual alcoholic strength sensing function

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0052] Embodiment 1, the different stability of composite ICP material [RhB / Zn (bix)] in ethanol and water

[0053] 2.5 mL of ethanol and water were added to the ethanol dispersion (500 μL, 2 mg / mL) of [RhB / Zn(bix)], respectively.

[0054] The obtained result is: after adding ethanol, the ethanol dispersion of [RhB / Zn(bix)] does not change substantially;

[0055] But after adding water, the ethanol dispersion of [RhB / Zn(bix)] became clear and transparent.

[0056] Figure 4 It is the SEM image of the different morphologies of [RhB / Zn(bix)]ICP particles in ethanol and water.

[0057] It can be seen from the figure that in ethanol, [RhB / Zn(bix)]ICP particles maintain a stable spherical structure, and the guest molecule RhB is wrapped in the spherical structure;

[0058] While in water, the spherical structure of [RhB / Zn(bix)]ICP particles was destroyed, resulting in the release of the encapsulated guest molecule RhB.

[0059] The present invention uses the different stabilit...

Embodiment 2

[0060] Embodiment 2, composite ICP material [RhB / Zn (bix)] is to the analytical performance of different volume percentage concentration water response

[0061] Add 1 μL, 2 μL, 5 μL, 10 μL, 20 μL, 40 μL, 60 μL, 80 μL, 100 μL of water to 2.0 mL of [RhB / Zn(bix)] ethanol suspension with a concentration of 2 mg / mL, centrifuge, and take the supernatant Fluorescence was measured with a fluorescence instrument, with the fluorescence wavelength as the abscissa, and the fluorescence response value at 580nm as the ordinate (excitation wavelength: 545nm), to obtain the response curve of the composite ICP material [RhB / Zn(bix)] to water;

[0062] Figure 5 It is the rapid and linear response of the composite ICP material [RhB / Zn(bix)] to water with different volume percentage concentrations. The volume percentage concentration of water in the response range is 0.05%-4.76%. The composite ICP material [RhB / Zn(bix)] responds to water when the volume fraction of is in the range of 0.05%-4.76...

Embodiment 3

[0063] Embodiment 3, detect alcohol content

[0064] 1) Make a standard curve:

[0065] Add a series of 100 μL ethanol aqueous solution standards with ethanol concentrations of 20%, 30%, 40%, 50%, 60%, 70%, 80%, and 100% in sequence to 1.9 mL of composite ICP In the ethanol dispersion of the material [RhB / Zn(bix)], the concentration of [RhB / Zn(bix)] in the ethanol dispersion is 2 mg / mL, (that is, the volume fraction of water contained in the ethanol-water mixed solution used is sequentially 4%, 3.5%, 3%, 2.5%, 2%, 1.5%, 1%, 0%, in line with the linear response range of the composite ICP material to water) Ultrasound for 1min, centrifuge, collect the supernatant, and use a fluorescence instrument For the measurement, take the volume percent concentration of ethanol as the abscissa, the fluorescence response value at 580 nm as the ordinate, and the excitation wavelength as 545 nm, and draw a standard curve.

[0066] As can be seen from the result obtained in Example 2, the met...

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Abstract

The invention discloses application of an infinite coordination polymer with a visual alcoholic strength sensing function. An ICP material coated with a guest molecule is instable to water and has an optical sensing function of the guest molecule, so that the alcoholic strength of white spirit can be directly and visually analyzed and measured. The method comprises the following steps of: dispersing the simply synthesized ICP material in ethanol, adding the commercially available white spirit, performing ultrasonic and centrifugal detection, performing visual analysis and fluorometric analysis on supernatant liquid, and substituting the measurement value into a standard curve so as to obtain the alcoholic strength of the white spirit. The method has the advantages of high sensitivity, fast response, low cost, low demand on sample quantity and the like; more important, the method is easy to operate, high in stability and suitable for field measurement. Therefore, the method for analyzing and measuring the alcoholic strength of white spirit has wide application prospects in aspects of controlling excessive alcohol consumption, preventing drunk driving, maintaining social public security and the like.

Description

technical field [0001] The invention relates to the application of an infinite coordination polymer with visual alcohol level sensing function. Background technique [0002] Along with the progress of society and the raising of people's living standards, alcoholic drinks are more and more subject to people's attention. Liquor is one of the most popular drinking alcohols in recent years. In recent years, the consumption of liquor has shown an increasing trend every year. In order to further ensure consumers' drinking safety and correctly guide consumers to consume, accurate detection and analysis of liquor alcohol content is a must The main way of wine quality is good or bad. Therefore, the analysis of liquor alcohol content is an important part of alcohol testing. [0003] The traditional method of detecting alcohol content is mainly the distillation method, which takes a long time and has high requirements for the operating experience of the detection and analysis personn...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N33/98
Inventor 毛兰群邓晶晶杨丽芬于萍
Owner INST OF CHEM CHINESE ACAD OF SCI
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