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Fluorescent probe, preparation method, application and fluorescence detection test paper thereof

A fluorescent probe and aminobenzene technology, applied in the field of fluorescent probes, can solve problems such as the inability to use fluorescent test paper, complex synthesis methods, and poor photostability, and achieve good photostability, easy purification, and short time-consuming effects

Pending Publication Date: 2022-07-08
SHAANXI UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the existing Zn (II) fluorescent probe synthesis method is complex, and in the concentrated state poor photostability and can not be used for the preparation of portable fluorescent test paper shortcomings, to provide a fluorescent probe, preparation method, application and its fluorescence detection test paper

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  • Fluorescent probe, preparation method, application and fluorescence detection test paper thereof
  • Fluorescent probe, preparation method, application and fluorescence detection test paper thereof
  • Fluorescent probe, preparation method, application and fluorescence detection test paper thereof

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Embodiment 1

[0033] Synthesis of fluorescent probe: 1-(4-aminobenzene)-1,2,2-triphenylene (0.0694g, 0.2mmol) and 8-hydroxyquinoline-2-carbaldehyde (0.0346g, 0.2mmol) were respectively 1 mL of toluene was added to dissolve, and the two were mixed in a round-bottom flask, heated and stirred at 105° C. for 4 h, and then cooled to room temperature. The reaction solution was volatilized at room temperature for 1 to 2 days to obtain yellow crystals, which were washed with toluene, filtered, and dried to obtain Zn(II) fluorescent probe compound (0.0632g, 62.8%). The structural formula of the fluorescent probe is shown in figure 1 shown.

[0034] see figure 2 and image 3 , figure 2 for fluorescent probes 1 H NMR, image 3 The ESI-HRM S of the fluorescent probe, the above figures all characterize the structure of the probe molecule, from elemental analysis and 1 It can be seen from H NMR that the probe compound obtained by this method is of high purity.

[0035] Elemental Analysis (C 36 ...

Embodiment 2

[0037] The selection performance test of the fluorescent probe for Zn(II) ions and the application of the test paper detection of the present embodiment are implemented according to the following steps:

[0038] (1) Fluorescence selectivity of fluorescent probes to metal ions: The fluorescent probes were combined with 15 kinds of metal ions (Al 3+ , Fe3+ , Co 2+ , Ni 2+ , Cu 2+ , Cr 3+ , Cd 2+ , Mn 2+ , Pb 2+ , Zn 2+ , K + , Ca 2+ , Na + , Mg 2+ , Li + ) in THF / H 2 Mixed in O(v / v, 3 / 7) solution, in which the concentration of fluorescent probe is 20 μM and the concentration of metal ion is 20 μM. The fluorescence emission spectrum of each solution to be tested was measured with 420 nm as the excitation light wavelength. see Figure 4 , the results show that the fluorescent probe itself has almost no fluorescence under the test conditions, only the addition of Zn 2+ The fluorescence was significantly enhanced after ionization. Fluorescence titration experiments ...

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Abstract

The invention discloses a fluorescent probe, a preparation method, application and fluorescence detection test paper thereof, and belongs to the field of fluorescent probes. According to the fluorescent probe disclosed by the invention, a metal ion chelating group 8-hydroxyquinolyl with ESIPT activity is taken as a recognition group, and meanwhile, a typical AIE active group tetraphenyl vinyl is introduced into a molecule, so that an ACQ effect is avoided. According to the application of the fluorescent probe, Zn (II) in a water medium can be detected, fluorescent response to Zn (II) can be rapidly achieved in the water medium with the pH value of 6-12, it is indicated that when the probe is used for recognizing Zn (II), the pH value of a sample to be detected does not need to be strictly controlled, and Zn (II) in a complex environmental sample can be easily detected. The obtained fluorescent probe has good light stability in Zn (II) detection under the condition of high concentration, so that Zn (II) fluorescence detection test paper which is more convenient to use is prepared by utilizing the fluorescent probe.

Description

technical field [0001] The invention belongs to the field of fluorescent probes, in particular to a fluorescent probe, a preparation method, an application and a fluorescent detection test paper thereof. Background technique [0002] Zinc is a necessary metal element in animals and plants, so zinc is usually non-toxic, but when the intake of zinc is too much, it will accumulate to a certain level, which will cause serious harm to animals and plants. For example, fish exposed to high levels of zinc for long periods of time can be lethally harmed. In addition, excessive intake of zinc in the human body can cause diseases such as anemia and brain tissue atrophy. Therefore, it is necessary to regularly monitor the zinc content in the water environment around the city, and focus on monitoring industrial wastewater to find the source of Zn(II) pollution, so as to reduce or eliminate the emission of Zn(II). Therefore, it is very necessary to develop a simple, convenient and sensi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D215/12C09K11/06G01N21/64
CPCC07D215/12C09K11/06G01N21/643C09K2211/1029C09K2211/1007G01N2021/6439
Inventor 王丹李少洁
Owner SHAANXI UNIV OF SCI & TECH