Preparation method and application of hybrid chemical sensor based on amphiphilic thermo-sensitive block copolymer

A chemical sensor, block copolymer technology, applied in scientific instruments, instruments, material analysis by optical means, etc., can solve problems such as inability to quantitatively detect, and achieve improved quantum yield, strong anti-interference ability, and good water solubility. Effect

Active Publication Date: 2018-10-19
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Currently, a diarylethene derivative with pyridine as a functional group is disclosed for rapid visual detection of Al 3+ In addition, a highly selective method using Nile Red (NR) as a complexing agent to identify and detect Fe 3+ , although these two methods can be observed by naked eyes in the micromolar state, they are limited to the qualitative detection of metal ion concentration and cannot be quantitatively detected

Method used

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  • Preparation method and application of hybrid chemical sensor based on amphiphilic thermo-sensitive block copolymer
  • Preparation method and application of hybrid chemical sensor based on amphiphilic thermo-sensitive block copolymer
  • Preparation method and application of hybrid chemical sensor based on amphiphilic thermo-sensitive block copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Example 1: Preparation of hybrid chemical sensors based on amphiphilic block copolymers

[0050] (1) Preparation of 2,4-dihydroxybenzaldehyde hydrazone BD:

[0051]

[0052] Benzohydrazide (1.36g, 0.01mol) was dissolved in ethanol (20.00mL), and a mixture of 2,4-dihydroxybenzaldehyde (1.38g, 0.01mol) and ethanol (20.00mL) was added dropwise while stirring. The temperature was raised to 60°C and stirred for 1 h, the solid precipitated out, and the crude product was obtained by cooling and filtration, and recrystallized three times in ethanol to obtain the scaly rose gold solid product BD (2.04 g, yield: 80.0%).

[0053] the resulting product 1 H NMR spectrum as figure 1 In a, the result is as follows:

[0054] 1 H NMR (CD 3 OD,δ,ppm):8.41(1H,ArCH=N-),7.90-7.95(2H,ArH),7.50-7.65(3H,ArH), 7.22(1H,ArH),6.35-6.45(2H,ArH) , proving that the material was synthesized successfully.

[0055] (2) Preparation of Schiff base derivative monomer (2,4-methacrylic benzal hydra...

Embodiment 2

[0091] Steps (1)-(6) are the same as in Example 1.

[0092] Step (7): In the one-mouth bottle, add magneton, NIPAM (0..6825g, 6.00mmol), BDMa (0.075g, 0.24mmol), polyethylene glycol monomethyl ether macromolecular chain transfer agent (0.315g, 0.06 mmol), AIBN (1.5 mg, 9 μmol) and 1,4-dioxane (1.05 g). The reaction raw materials were sealed under nitrogen atmosphere after three vacuum pumping-nitrogen filling cycles. After reacting in an oil bath at 60°C for 1 h, it was quenched in liquid nitrogen after the reaction. Diluted with 1,4-dioxane, and the mixture was precipitated and dissolved in excess ether, and the cycle was repeated three times.

[0093] Step (8): In the one-mouth bottle, add magneton, NIPAM (0..6825g, 6.00mmol), Rh6GEMa (0.075g, 0.24 mmol), polyethylene glycol monomethyl ether macromolecular chain transfer agent (0.315g, 0.06 mmol), AIBN (1.5 mg, 9 μmol) and 1,4-dioxane (1.05 g). The reaction raw materials were sealed under nitrogen atmosphere after three ...

Embodiment 3

[0096] Steps (1)-(6) are the same as in Example 1.

[0097] Step (7): In the one-mouth bottle, add magneton, NIPAM (1.1375g, 10.00mmol), BDMa (0.125g, 0.40mmol), polyethylene glycol monomethyl ether macromolecular chain transfer agent (0.525g, 0.10mmol ), AIBN (2.5 mg, 16 μmol) and 1,4-dioxane (1.75 g). The reaction raw materials were sealed under nitrogen atmosphere after three vacuum pumping-nitrogen filling cycles. After reacting in an oil bath at 80° C. for 2 h, it was quenched in liquid nitrogen after the reaction. Diluted with 1,4-dioxane, and the mixture was precipitated and dissolved in excess ether, and the cycle was repeated three times.

[0098] Step (8): In the one-mouth bottle, add magneton, NIPAM (1.1375g, 10.00mmol), Rh6GEMa (0.125g, 0.40 mmol), polyethylene glycol monomethyl ether macromolecular chain transfer agent (0.525g, 0.10mmol ), AIBN (2.5 mg, 16 μmol) and 1,4-dioxane (1.75 g). The reaction raw materials were sealed under nitrogen atmosphere after th...

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Abstract

The invention relates to a preparation method and application of a hybrid chemical sensor based on an amphiphilic thermo-sensitive block copolymer and belongs to the technical field of preparation andapplication of chemical materials. The hybrid chemical sensor is formed by two probes P (NIPAM-co-BDMA) and P (NIPAM-co-Rh6GEMa). The preparation method and the application provided by the inventionhave the benefits that a multifunctional polymer fluorescent probe is combined with vision inspection to obtain a multifunctional vision heat sensor; through reasonably designing a detection model, aneigenvalue of color is extracted; a PCA analysis method is constructed, so that the simultaneous quantitative detection on Al<3+> and Fe<3+> is realized.

Description

technical field [0001] The invention relates to a preparation method and application thereof based on an amphiphilic temperature-sensitive block copolymer mixed chemical sensor, belonging to the technical field of chemical material preparation and application. Background technique [0002] Aluminum is the largest metal element in nature, its content in the earth's crust is second only to silicon and oxygen, ranking third in its reserves, accounting for nearly 8.3% of the earth's crust. Aluminum and its alloys are the most widely used in contemporary times, even surpassing copper, and its output is also the top priority of non-ferrous metals. Due to the extensive use of aluminum foil and aluminum containers, the possibility of human body absorbing trivalent aluminum is greatly increased. In recent years, it has been recognized that excessive intake of Al 3+ It will lead to diseases such as Alzheimer's disease, osteoporosis, Parkinson's disease and central nervous system dys...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/24C08F220/54C08F220/36C08F220/60C08F2/38G01N21/64
CPCG01N21/6428C08F2/38C08F220/54C08L33/24G01N2021/6432C08F220/603C08F220/36
Inventor 蔡云凤唐帅韩娟王赟李春梅倪良王蕾
Owner JIANGSU UNIV
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