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Fluorescent array sensor for distinguishing nitrophenol compounds and preparation method thereof

An array sensor, nitrophenol technology, which is applied in the fields of material science, sensing, and luminescence, can solve the problems of identification and differentiation of undiscovered nitrophenol compounds, and achieves an expanded selection range, easy discrimination, and guaranteed stability. Effect

Active Publication Date: 2022-05-17
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The existing luminescent metal-organic framework material-based fluorescent sensors for specific nitrophenol recognition are all based on the specific sensing principle, and no luminescent metal-organic framework for the identification and differentiation of nitrophenol compounds has been found. Therefore, it is of great significance to develop a fluorescent array sensor based on luminescent metal-organic framework materials to realize the identification and differentiation of nitrophenol compounds.

Method used

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  • Fluorescent array sensor for distinguishing nitrophenol compounds and preparation method thereof
  • Fluorescent array sensor for distinguishing nitrophenol compounds and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Ultrasonic disperse 0.61g of zirconium chloride, 0.57g of 1,2,4,5-pyrellitic acid, and 0.05g of 1,4-naphthalene dicarboxylic acid in 15mL of deionized water and 10mL of acetic acid, and then the mixed solution Placed at 100°C for 24 hours, cooled naturally to room temperature, washed three times with an appropriate amount of methanol, then washed three times with an appropriate amount of acetone, and then dried in vacuum at a temperature of 70°C for 8 hours to obtain a metal-organic framework material.

[0038] Take 50 mg of metal-organic framework material and place it in a reaction container filled with 10 mL of deionized water, add 318 mg of europium nitrate hexahydrate and 129 mg of terbium nitrate hexahydrate, then place the container in an oven at 60°C for 24 hours, and cool it down to room temperature naturally. Wash three times with an appropriate amount of deionized water to obtain the desired fluorescent array sensor.

[0039]Under the excitation of ultraviole...

Embodiment 2

[0041] Ultrasonic disperse 0.32g of hafnium chloride, 0.17g of 1,4-phthalic acid, and 0.18g of 2-aminoterephthalic acid in 5mL of N,N-dimethylformamide and 10mL of hydrochloric acid, and then The mixed solution was reacted at 70°C for 8 hours, cooled naturally to room temperature, washed three times with an appropriate amount of N,N-dimethylformamide, and then washed three times with an appropriate amount of acetone, and then dried in vacuum at a temperature of 30°C 8h, the metal-organic framework material was obtained.

[0042] Take 0.5 mg of metal-organic framework material and place it in a reaction container filled with 5 mL of methanol, add 44.6 mg of europium nitrate hexahydrate and 44.4 mg of samarium nitrate hexahydrate, then place the container in an oven at 30°C for 8 hours, and cool it down to room temperature naturally , washed three times with an appropriate amount of methanol to obtain the desired fluorescent array sensor.

[0043] Under the excitation of ultrav...

Embodiment 3

[0045] 29.75g of zinc nitrate hexahydrate, 21.01g of 1,3,5-benzenetricarboxylic acid, 2.8g of 2,6-naphthalene dicarboxylic acid were ultrasonically dispersed in 25mL of dichloromethane and 10mL of nitric acid, and then the mixed solution was placed Reacted at 120°C for 72h, cooled naturally to room temperature, washed three times with an appropriate amount of dichloromethane, then washed three times with an appropriate amount of acetone, and then dried in vacuum at 120°C for 72h to obtain a metal-organic framework material.

[0046] Take 200mg of metal-organic framework material and place it in a reaction vessel filled with 20mL of ethanol, add 4.56g of dysprosium nitrate hexahydrate, 4.46g of europium nitrate hexahydrate and 4.53g of terbium nitrate hexahydrate, and then place the vessel in an oven at 120°C for reaction After 72 hours, it was naturally cooled to room temperature, and washed three times with an appropriate amount of ethanol to obtain the desired fluorescent arr...

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Abstract

The invention discloses a fluorescent array sensor for distinguishing nitrophenol compounds and a preparation method of the fluorescent array sensor, the fluorescent array sensor consists of a metal-organic framework material and rare earth ions in pore channels of the metal-organic framework material, and the fluorescent array sensor comprises the following components in percentage by mass: 98%-99.99% of the metal-organic framework material and 0.01%-2% of the rare earth ions. The preparation method of the fluorescent array sensor comprises synthesis of the metal-organic framework material and post-modification of rare earth ions. According to the sensor, the advantage that a metal-organic framework material is easy to post-modify is fully utilized, a plurality of stable and easy-to-distinguish luminescence centers are introduced into a single-phase material, and the nitrophenol compounds are identified and distinguished by utilizing the cross response of sensor units; according to the method, the defects that a traditional fluorescence sensor and a traditional array sensor are complex in design, similar objects are difficult to distinguish, and device miniaturization is difficult to achieve are overcome, the production cost and the detection cost are reduced, meanwhile, the stability is excellent, and the good practical application prospect is achieved.

Description

technical field [0001] The invention relates to the fields of material science, luminescence, and sensing technology, in particular to a fluorescent array sensor for distinguishing nitrophenol compounds and a preparation method thereof. Background technique [0002] As an important intermediate in the synthesis of fine chemicals, nitrophenol compounds are widely used in the production process of pesticides, medicines, dyes, etc. synthesized on the basis of phenol. However, nitrophenol compounds have been identified as toxic pollutants by many organizations and countries including the United Nations because of their stimulatory and inhibitory effects on the central nervous system and vagus nerve endings, as well as possible methemoglobinemia and dyspnea. Therefore, it is of great significance to develop a convenient, rapid, sensitive and accurate detection method to realize the distinction of nitrophenol compounds. [0003] Compared with other detection methods, detection m...

Claims

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Application Information

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IPC IPC(8): G01N21/64G01N1/28G01N1/44
CPCG01N21/64G01N1/28G01N1/44
Inventor 崔元靖姜子玮钱国栋杨雨
Owner ZHEJIANG UNIV
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