Synthesis and application of a tripod quaternary ammonium salt gelling factor and its supramolecular smart film

A technology of salt gelling factor and gelling factor, applied in the field of making smart windows, can solve the problems of inferior quality and high price

Active Publication Date: 2022-06-07
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing smart window products are often expensive, low-quality, and use various toxic materials in the production process

Method used

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  • Synthesis and application of a tripod quaternary ammonium salt gelling factor and its supramolecular smart film
  • Synthesis and application of a tripod quaternary ammonium salt gelling factor and its supramolecular smart film
  • Synthesis and application of a tripod quaternary ammonium salt gelling factor and its supramolecular smart film

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Experimental program
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Effect test

Embodiment 1、 3

[0038] Example 1. Synthesis of Tripod Quaternary Ammonium Salt Gelling Factor (TH)

[0039] (1) Synthesis of p-hydroxybenzaldehyde functionalized quaternary ammonium salt: add 1.5 mmol (0.3629 g) 1,6-dibromohexane and 0.5 mmol KI (0.083 g) to 200 ml of acetone, stir at room temperature for 30 minutes, add 0.138g K 2 CO 3 (1 mmol) and 1 mmol p-hydroxybenzaldehyde (0.122 g) immediately with N 2Protection, the mixture was heated to reflux at 60~65 ° C for 70~72 hours, and then the silica gel was rotated and stirred, and the product was purified by column chromatography, eluted with petroleum ether: ethyl acetate = 10: 1 to obtain a white Powdered solid M 2 was 0.2840g, yield: 70.4%; then in 2ml ethyl acetate, 0.5gM was added 2 and 2ml of trimethylamine, stirred at room temperature for 20-25 minutes, concentrated, then added 5ml of acetonitrile and 1ml of water, and concentrated 3-4 times to obtain a white powdery solid, which is p-hydroxybenzaldehyde functionalized quaternary...

Embodiment 2

[0041] Embodiment 2, the preparation of supramolecular smart film

[0042] 0.0100 g of TH was added to 200 μL of distilled water, heated to completely dissolve TH, and then cooled at room temperature to obtain a stable supramolecular hydrogel. The supramolecular hydrogel is evenly coated on the glass substrate, and then dried to remove the water solvent, to prepare a supramolecular smart adhesive film attached to the glass substrate, and the thickness of the adhesive film is 2.5~3×10 -3 mm. The film is colorless and transparent, and its light transmittance can reach 97.1%.

[0043] Fumigating TH-GF with TEA steam, the film will turn from transparent to opaque. Then TH-GF fumigated by TEA with HCl vapor, the film will continue to transform from opaque to transparent, and can switch between transparent and opaque many times under the alternating action of TEA and HCl vapor. Therefore, the film can be used as a smart glass coating to prepare smart glass to dynamically and reve...

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Abstract

The present invention designs and synthesizes a tripod quaternary ammonium salt gel factor TH, which is obtained by reacting p-hydroxybenzaldehyde functionalized quaternary ammonium salt and trimellitic hydrazide in DMF. Under these conditions, it can self-assemble in distilled water to form a stable transparent hydrogel TH‑G; spread the hydrogel evenly on a glass substrate and dry it to prepare a highly transparent smart film TH‑GF, which is transparent The light rate can reach 97.1%. What's even more amazing is that the smart film TH‑GF is alternately fumigated with TEA and HCl to achieve reversible switching between transparent and opaque. Therefore, it can be used as a smart glass coating to achieve high transparency or complete blocking of incident light, thereby dynamically and reversibly adjusting the transmittance of sunlight entering the building (through glass windows).

Description

technical field [0001] The invention relates to a tripod quaternary ammonium salt gel factor and a preparation method thereof. The invention also relates to the synthesis of an intelligent adhesive film based on the supramolecular gel gel factor and the realization of transparency and opacity under the alternating action of acid and alkali vapor. The performance of reversible switching between them can be used as a smart glass coating to make smart windows. Background technique [0002] With the continuous development of industrialization, urbanization and modernization, the worldwide energy consumption is increasing rapidly year by year. Therefore, improving energy efficiency and reducing energy consumption play an increasingly important role in the use of building energy. As an important part of architecture, windows determine lighting, thermal insulation, aesthetics, sound insulation and natural ventilation. However, traditional windows are limited by their static and u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C249/16C07C251/86C08J5/18C08L87/00C03C17/28
CPCC07C251/86C07C249/16C08J5/18C03C17/28C08J2387/00
Inventor 林奇孙小文王中会杨海龙巩冠斐张芹鹏姚虹张有明魏太保
Owner NORTHWEST NORMAL UNIVERSITY
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