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A kind of nano-silica supported fluoride ion fluorescent probe, preparation method and application thereof

A technology of nano-silica and fluorescent probes, applied in chemical instruments and methods, fluorescence/phosphorescence, luminescent materials, etc., can solve problems such as inapplicability, and achieve the effect of easy repeatability and simple preparation

Active Publication Date: 2020-01-31
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Hydrogen-bonded fluoride ion fluorescent probes are easy to prepare and have good fluoride ion fluorescence effects. However, due to their hydrophobic structure, they need to be used in mixed systems such as water / DCM and water / methanol to achieve effective detection of fluoride ions. , which cannot be applied in a single aqueous solution

Method used

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  • A kind of nano-silica supported fluoride ion fluorescent probe, preparation method and application thereof
  • A kind of nano-silica supported fluoride ion fluorescent probe, preparation method and application thereof
  • A kind of nano-silica supported fluoride ion fluorescent probe, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Weigh 50 mg of amino-modified porous silica nanoparticles obtained by loading ammonium acetate and porous SBA-15 under the condition of 1:1, and dissolve it in 20 ml of anhydrous toluene solution;

[0032] 2) Weigh 50 mg of 9-anthracenemethylamine, and dissolve it in 10 ml of anhydrous toluene solution;

[0033] 3) Nitrogen purged 5 times, heated to 110°C under nitrogen atmosphere and refluxed for 8 hours;

[0034] 4) The solution obtained in step 3) was distilled under reduced pressure, washed with a sufficient amount of ethyl acetate, and vacuum-dried at 40°C to obtain an off-white powder, which was the nano-silica-loaded fluoride ion fluorescent probe , corresponding to a maximum absorption wavelength of 408nm.

[0035] According to the above examples, the nano-silica supported fluoride ion fluorescent probe with a mass ratio of organic part to inorganic part of 1:1 can be directly applied to the detection of fluoride ion in pure water system without further modi...

Embodiment 2

[0037] 1) Weigh 50 mg of amino-modified porous silica nanoparticles obtained by carrying out amino-loading of ammonium acetate and porous SBA-15 under the condition of 1:1.1, and dissolve it in 20 ml of anhydrous toluene solution;

[0038] 2) Weigh 50 mg of 9-anthracenemethylamine, and dissolve it in 10 ml of anhydrous toluene solution;

[0039] 3) Nitrogen purged 5 times, heated to 110°C under nitrogen atmosphere and refluxed for 8 hours;

[0040] 4) The solution obtained in step 3) was distilled under reduced pressure, washed with a sufficient amount of ethyl acetate, and vacuum-dried at 40°C to obtain an off-white powder, which was the nano-silica-loaded fluoride ion fluorescent probe , corresponding to a maximum absorption wavelength of 403nm.

[0041] According to the above examples, the nano-silica supported fluoride ion fluorescent probe with a mass ratio of organic part to inorganic part of 1:1 can be directly applied to the detection of fluoride ion in pure water sys...

Embodiment 3

[0043] 1) Weigh 50 mg of amino-modified porous silica nanoparticles obtained by carrying out amino loading on ammonium acetate and porous SBA-15 under the condition of 0.9:1, and dissolve it in 20 ml of anhydrous toluene solution;

[0044] 2) Weigh 50 mg of 9-anthracenemethylamine, and dissolve it in 10 ml of anhydrous toluene solution;

[0045] 3) Nitrogen purged 5 times, heated to 110°C under nitrogen atmosphere and refluxed for 8 hours;

[0046] 4) The solution obtained in step 3) was distilled under reduced pressure, washed with a sufficient amount of ethyl acetate, and vacuum-dried at 40°C to obtain an off-white powder, which was the nano-silica-loaded fluoride ion fluorescent probe , corresponding to a maximum absorption wavelength of 417nm.

[0047] According to the above examples, the nano-silica supported fluoride ion fluorescent probe with a mass ratio of organic part to inorganic part of 1:1 can be directly applied to the detection of fluoride ion in pure water sys...

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Abstract

The invention discloses a nano silicon dioxide loaded fluorine-ion fluorescent probe, and a preparation method and application of the probe. The preparation method provided by the invention comprisesthe following steps: firstly, taking tetraethyl orthosilicate and P123 as raw materials, and carrying out a series of steps of hydrothermal treatment, aging, amino activation and the like to prepare amino-modified porous silicon dioxide nanoparticle SBA-15; then, performing a reaction on 9-aminomethylanthracene with the amino modified SBA-15 by the one-pot method to obtain the nano silicon dioxideloaded fluorine-ion fluorescent probe. The preparation method is simple, and the obtained nano silicon dioxide loaded fluorine-ion fluorescent probe has good water solubility and strong fluorescenceeffect, is environmentally friendly, can be recycled for reuse, has high sensitivity and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials, and in particular relates to a fluoride ion fluorescent probe supported by nano silicon dioxide, a preparation method and an application thereof. Background technique [0002] Fluoride is a double-edged sword. An appropriate amount of fluoride is beneficial to natural development and human metabolism, while excessive fluoride can lead to various diseases. Anions play a very important role in many chemical and biological processes, and the identification and detection of anions can play an important role in guiding pollutant ions. With the continuous development of science and technology, various detection methods have come out one after another, among which the fluoride ion fluorescent probe method is a low-cost, fast and safe method for detecting fluoride ions. [0003] Fluorescent sensors can convert the information of chemical molecular recognition into visible fluoresc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/02C09K11/06G01N21/64
CPCC09K11/02C09K11/06C09K2211/1011G01N21/643
Inventor 卢德力任济夫任大伟许莉刘青韩生
Owner SHANGHAI INST OF TECH