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Naked eye or fluorescent Al<3+> probe and preparation method and application thereof

A probe and fluorescence technology, applied in the direction of fluorescence/phosphorescence, chemical instruments and methods, luminescent materials, etc., can solve the problems of inability to realize naked-eye detection and real-time detection, easy to be interfered by the external environment, and few types of probes, etc., to achieve responsiveness Rapid, simple detection method, sensitive detection effect

Active Publication Date: 2020-01-17
QIQIHAR UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The present invention will solve existing Al 3+ Due to the technical problems of fewer types of probes, susceptibility to interference from the external environment, high detection limit, and inability to realize naked-eye detection and real-time detection, a naked-eye or fluorescent Al 3+ Probe and its preparation method and application

Method used

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  • Naked eye or fluorescent Al&lt;3+&gt; probe and preparation method and application thereof
  • Naked eye or fluorescent Al&lt;3+&gt; probe and preparation method and application thereof
  • Naked eye or fluorescent Al&lt;3+&gt; probe and preparation method and application thereof

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specific Embodiment approach 1

[0030] Specific embodiment one: the naked eye or fluorescent Al of this embodiment 3+ The structural formula of the probe is:

[0031]

specific Embodiment approach 2

[0032] Specific embodiment two: naked-eye or fluorescent Al described in specific embodiment one 3+ The preparation method of the probe is as follows:

[0033] Add 2-(4-amino)phenylphenanthroimidazole and terephthalaldehyde into the reaction vessel according to the material ratio of (2.0~5.0):1.0, then add acid as the reaction solvent, and stir the reaction at room temperature for 4 ~10h, add alkaline solution after the reaction to adjust the pH value to 7~8, precipitate solid, filter with suction and dry to obtain the crude product; the crude product is recrystallized with a solvent, and after drying, naked-eye or fluorescent Al 3+ probe.

specific Embodiment approach 3

[0034] Specific embodiment three: what this embodiment is different from specific embodiment two is that the acid as reaction solvent is glacial acetic acid, phosphoric acid, p-toluenesulfonic acid, the concentrated hydrochloric acid that mass percentage concentration is 34%~35%, mass percentage concentration It is 65%~68% concentrated nitric acid or trifluoroacetic acid; the others are the same as the second embodiment.

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Abstract

The invention discloses a naked eye or fluorescent Al<3+> probe and a preparation method and an application thereof, relates to an Al<3+> probe and a detection method thereof, and solves the technicalproblems that an existing Al<3+> probe is relatively few in type, easy to interfere by external environment, relatively high in detection limit and incapable of realizing naked eye detection and real-time detection. The structure of the Al<3+> probe is as shown in the description. The preparation method comprises the following steps of reacting 2-(4-amino)phenyl phenanthroimidazole and p-phthalaldehyde in an acid solvent, adjusting the pH value to separate out solid, and performing suction filtration and drying to obtain a crude product; and recrystallizing and drying the crude product to obtain the naked eye or fluorescent Al<3+> probe. Al<3+> in a solution can be qualitatively detected through naked eye observation of color change and fluorescence intensity change or is quantitatively detected by using a fluorescence intensity standard curve method. The Al<3+> probe can be used in the field of detection of the Al<3+> in water systems or beverages.

Description

technical field [0001] The present invention relates to Al 3+ Probes and their detection methods. Background technique [0002] Aluminum is the most abundant metal in the earth's crust. Aluminum and its alloys are widely used in various industries due to their advantages of corrosion resistance, low density, good thermal and electrical conductivity, and good ductility. A small amount of Al 3+ Will not cause harm to the human body, but excessive Al 3+ It can be combined with protein to directly damage the central nervous system, causing symptoms such as memory loss and mental retardation, which will lead to early aging of people. al 3+ Accumulation in the brain can cause the degeneration of brain nerves, affect intelligence and personality, and even lead to more serious diseases. The World Health Organization (WTO) reported that Al in purified water 3+ The standard content should be lower than 0.2mg / L. Therefore, accurate, quantitative and qualitative detection of Al ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D235/02C09K11/06G01N21/64
CPCC07D235/02C09K11/06G01N21/6428C09K2211/1044C09K2211/1007G01N2021/6439
Inventor 赵冰卜凡强李安然宋天舒温景惠阚伟杜佳慧孔祥东
Owner QIQIHAR UNIVERSITY
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