A kind of preparation method and application of AIE type hyperbranched polymer gold cluster material

A technology of hyperbranched polymer and hyperbranched polyamide, which is applied in the field of analysis and detection, can solve the problems of being susceptible to environmental interference, large instrument size, time-consuming procedures, etc., and achieves the effect of avoiding complicated preparation process and good repeatability

Active Publication Date: 2022-03-25
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

While the traditional detection of CO 2 However, most of the methods have the limitations of large instrument volume, time-consuming procedures, and susceptibility to environmental interference.

Method used

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  • A kind of preparation method and application of AIE type hyperbranched polymer gold cluster material
  • A kind of preparation method and application of AIE type hyperbranched polymer gold cluster material
  • A kind of preparation method and application of AIE type hyperbranched polymer gold cluster material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Embodiment 1: a kind of method for preparing AIE type hyperbranched polymer gold cluster material by bottom-up strategy, comprises the following steps:

[0025] Step 1: After mixing benzophenone and 4-hydroxybenzophenone according to the molar ratio of 1:1, add tetrahydrofuran solvent, stir and dissolve, and prepare TPE-OH through coupling reaction;

[0026] Step 2: After mixing TPE-OH and epichlorohydrin according to the molar ratio of 4.3:5, add diethyl ketone solvent, and generate TPE-epoxides through substitution reaction;

[0027] Step 3: Take tris(2-aminoethyl)amine as A 3 Monomer, diacryloylcystamine as B 2 monomer, the molar ratio of the two is 1.1:1, and then in N 2 Under atmosphere, 25°C, continuous reaction for 96h. Synthesis of hyperbranched polyamidoamines containing disulfide bonds by Michael addition, and further introducing TPE-epoxides groups;

[0028] Step 4: adding acetic anhydride dropwise to the hyperbranched polyamide-amine, and reacting at roo...

Embodiment 2

[0031] Example 2: Record the fluorescence signal over time of the AIE type hyperbranched polymer gold cluster material prepared by the bottom-up strategy by a fluorescence spectrophotometer, and then determine the time stability of the material, as shown in figure 2 shown.

[0032] based on figure 2 It can be seen that the material can be stored stably, and the fluorescence ratio does not change significantly when the storage time reaches 3500 minutes, so it can be concluded that the material has high stability.

Embodiment 3

[0033] Example 3: Realize CO 2 Quantitative detection, including the following steps:

[0034] Step 1: Under a standard atmospheric pressure, pure CO 2 The gas is continuously passed into 30mL double-distilled water for about 0.5h, and the solution after passing through can be regarded as CO 2 Saturated solutions of gases;

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Abstract

The invention discloses a method for preparing AIE-type hyperbranched polymer gold cluster materials through a bottom-up strategy, and its practical application to CO 2 Quantitative detection. The implementation process includes: first introducing tetraphenylethylene-type epoxy compounds (TPE‑epoxides) into disulfide bond-containing hyperbranched polyamide‑amine (ssHPA), thus successfully preparing a disulfide bond-containing hyperbranched polyamide with AIE effect Polyamide-amine (TPE-ssHPA) and acetylated its end to obtain TPE-ssHPA-AC, and finally used it as a template and reducing agent p-chloroauric acid (HAuCl 4 ) were reduced to prepare Au NCs with dual fluorescent signals (TPE‑ssHPA‑AC@Au NCs). Then use CO 2 The combination with the tertiary amine in the hyperbranched polymer structure realizes CO 2 purpose of quantitative testing. The present invention utilizes the simple and fast fluorescence response to realize the detection of carbon dioxide (CO 2 ) Proportional detection of gas, thus avoiding complicated and cumbersome operation steps, long detection time, expensive equipment and loss of experimental consumables.

Description

technical field [0001] The invention relates to the technical field of analysis and detection, in particular, to a method for preparing a dual fluorescent material and a method for quantitative detection of CO 2 content detection method. Background technique [0002] carbon dioxide (CO 2 ) plays an important role in the global carbon cycle and biosphere homeostasis. At the same time, CO 2 Excessive emissions are threatening the global climate and human health. Therefore, to find an effective method to monitor CO in various environments 2 content is important. While the traditional detection of CO 2 However, most of the assay methods have limitations such as large instrument volume, time-consuming procedures, and susceptibility to environmental interference. Fluorescent sensors have attracted much attention due to their simplicity, low cost, high sensitivity, and real-time analysis. Among them, dual fluorescent materials can effectively avoid the interference of excit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/64
CPCG01N21/6428G01N2021/6432G01N2021/6439
Inventor 王勇李程肖殷陈宇
Owner TIANJIN UNIV
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