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Fluorescent film sensor for fluoride ion detection and preparation method of fluorescent film sensor

A thin-film sensor and fluorine ion technology, applied in fluorescence/phosphorescence, instruments, measuring devices, etc., can solve problems such as hindering the rapid diffusion of metal ions to be measured, weakening of the quantum efficiency of thin-film fluorescence, and dissolution, so as to achieve stable adhesion to the substrate Controllable intensity, ensuring permeability and fluorescence efficiency, ensuring rapid diffusion effect

Active Publication Date: 2017-05-31
JIANGXI PURUIFENG ECOLOGICAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far there are few reports on the fluorescence detection of efficient fluoride ion thin films, mainly because the use of fluorescent detection substances in the form of thin films, the dense thin film hinders the rapid diffusion of the metal ions to be measured, and the weakening of the fluorescence quantum efficiency of the thin film. Membrane material is unstable, easy to swell, dissolve, decay quickly, poor stability, poor selectivity and other problems during use

Method used

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  • Fluorescent film sensor for fluoride ion detection and preparation method of fluorescent film sensor
  • Fluorescent film sensor for fluoride ion detection and preparation method of fluorescent film sensor
  • Fluorescent film sensor for fluoride ion detection and preparation method of fluorescent film sensor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Using 3.78g of 2-bromo-9,9-(N-carbazole-hexyl)fluorene as raw material, add solvent triethylamine 20mL, and carry out catalytic reaction with 0.69g trimethylacetylene, the catalyst used includes bis Triphenylphosphine palladium dichloride 20mg, cuprous iodide 20mg and triphenylphosphine 70mg. In the catalytic reaction, the temperature is controlled at 90°C, and the reaction is kept stirring for 5 hours. The crude product obtained by volatilizing the solvent is separated and purified by using petroleum ether / dichloromethane mixed solution (volume ratio: 3:1) to obtain 2-trimethylacetylene Base-9,9-(N-carbazole-hexyl)fluorene. Dissolve 2-trimethylethynyl-9,9-(N-carbazol-hexyl)fluorene in 20 mL THF / H 2 O (volume ratio is 1:1), add 1.12g K 2 CO 3 , The reaction was stirred at room temperature for 2h. The solvent was then removed under reduced pressure, and CH 2 Cl 2 Extraction, the organic layer was washed repeatedly with deionized water and concentrated hydrochlo...

Embodiment 2

[0035](1) Using 2.53g of 2-bromo-9,9-(N-carbazole-hexyl)fluorene as raw material, add 12mL of solvent triethylamine, and carry out catalytic reaction with 0.46g of trimethylacetylene, the catalyst used includes bis Triphenylphosphine palladium dichloride 15mg, cuprous iodide 15mg and triphenylphosphine 56mg. In the catalytic reaction, the temperature is controlled at 80°C, the reaction is kept stirring for 4 hours, and the crude product obtained by volatilizing the solvent is separated and purified by using petroleum ether / dichloromethane mixed solution (volume ratio: 3:1) to obtain 2-trimethylacetylene Base-9,9-(N-carbazole-hexyl)fluorene. Dissolve 2-trimethylethynyl-9,9-(N-carbazol-hexyl)fluorene in 15 mL THF / H 2 O (volume ratio is 1:1), add 0.88g K 2 CO 3 , Stir the reaction at room temperature for 1.5h. The solvent was then removed under reduced pressure, and CH 2 Cl 2 Extraction, the organic layer was washed repeatedly with deionized water and concentrated hydrochlo...

Embodiment 3

[0042] (1) Using 1.62g of 2-bromo-9,9-(N-carbazole-hexyl)fluorene as raw material, add solvent triethylamine 8mL, and carry out catalytic reaction with 0.22g trimethylacetylene, the catalyst used includes bis Triphenylphosphine palladium dichloride 12mg, cuprous iodide 12mg and triphenylphosphine 38mg. In the catalytic reaction, the temperature is controlled at 80°C, the reaction is kept stirring for 4 hours, and the crude product obtained by volatilizing the solvent is separated and purified by using petroleum ether / dichloromethane mixed solution (volume ratio: 3:1) to obtain 2-trimethylacetylene Base-9,9-(N-carbazole-hexyl)fluorene. Dissolve 2-trimethylethynyl-9,9-(N-carbazol-hexyl)fluorene in 8 mL THF / H 2 O (volume ratio is 1:1), add 0.59g K 2 CO 3 , The reaction was stirred at room temperature for 1 h. The solvent was then removed under reduced pressure, and CH 2 Cl 2 Extraction, the organic layer was washed repeatedly with deionized water and concentrated hydrochlor...

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Abstract

The invention discloses a fluorescent film sensor for fluoride ion detection and a preparation method of the fluorescent film sensor and relates to the field of fluorescent molecular sensors. According to the fluoride ion detecting fluorescent film sensor and the preparation method thereof, firstly, an electropolymerizable fluorescent sensing material monomer is prepared from 2-bromo-9,9-(N-carbazole-hexyl) fluorene and trimethylsilylacetylene through a reaction; then the fluorescent film sensor poly1,4-bis(4-(9,9-bis(N-carbazole-hexyl) fluorenyl)-1,2,3-triazolyl) benzene is obtained from the fluorescent sensing material monomer through electrochemical polymerization, and Fe<3+> can be added to the obtained fluorescent film sensor to enhance the detection performance of the sensor. The fluorescent film sensor can effectively guarantee fast diffusion of metal ions in a film and improves the film detection sensitivity, the used fluorescent sensing raw materials are cheap and available, the synthetic method is relatively simple, and a constructed device is good in reversibility and high in practicability.

Description

technical field [0001] The invention belongs to the field of fluorescent molecular sensors, in particular to a fluorescent film sensor for detecting fluorine ions and a preparation method thereof. Background technique [0002] Anions play an important role in the fields of biology, environment, and chemical industry. Designing and synthesizing chemical sensors that selectively recognize anions has become an important topic in the field of supramolecular chemistry research. Among them, fluorescent sensors can convert molecular recognition information into perceivable Fluorescent signal, with high sensitivity, rapid detection, low detection limit and other characteristics, can be widely used in biochemistry, cell biology and analytical chemistry and other related fields. [0003] Fluoride ion has many unique biological and chemical properties. Fluorine is one of the essential trace elements for the human body. The lack of fluorine in the human body will cause diseases such as...

Claims

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Application Information

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IPC IPC(8): G01N21/64C25B3/00C25B3/10C08G73/08C07D403/14C25B3/29
CPCG01N21/6428C25B3/00C07D403/14C08G73/08C08J5/18C08J2379/06C25B3/29
Inventor 文阳平徐景坤丁万川
Owner JIANGXI PURUIFENG ECOLOGICAL TECH CO LTD
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