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A kit and its use in preparing visual organic solvent indicators and writing confidential documents

A technology of organic solvents and confidential documents, applied in the field of composite materials, can solve problems such as high cost and complicated preparation process of naphthalimide derivatives

Active Publication Date: 2021-09-03
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the pyridine functionalized naphthalimide derivative G1 is complex and expensive

Method used

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  • A kit and its use in preparing visual organic solvent indicators and writing confidential documents
  • A kit and its use in preparing visual organic solvent indicators and writing confidential documents
  • A kit and its use in preparing visual organic solvent indicators and writing confidential documents

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] Embodiment 1, the preparation of kit 1 of the present invention

[0057] 1. Synthesis of 1,4-dimethoxypillar[5]arene (DMP5):

[0058]

[0059] P-methoxybenzene (6.00g, 43.43mmol), paraformaldehyde (8.68g, 130.29mmol), and 1,2-dichloroethane (200.0mL) were added sequentially into a 500 mL round bottom flask as a solvent, Stir and dissolve at room temperature, then add catalyst BF 3 ·OEt 2 (4.33 mL). The reaction mixture was stirred at room temperature for 40 minutes, monitored by TLC (neat DCM) to confirm the completion of the reaction. Pour the reaction system into 300.0mL NaHCO 3 The catalyst was quenched in an aqueous solution, and the mixture was stirred with a glass rod until the reaction solution changed from dark green to gray, DCM was added, the layers were separated, and the organic solvent was removed in vacuo to obtain a crude product. The crude product was then purified by column chromatography (silica, pure DCM) to give a white solid, namely DMP5 (2....

Embodiment 2

[0064] Embodiment 2, the preparation of kit 2 of the present invention

[0065] Using DMP5 in Example 1 as component A, P5Q as component B, and dichloromethane as component C, and controlling the molar ratio of DMP5:P5Q to 1:1, the kit 2-1 of the present invention was prepared.

[0066] Using DMP5 in Example 1 as component A, P5Q as component B, and acetonitrile as component C, and controlling the molar ratio of DMP5:P5Q to 1:1, the kit 2-2 of the present invention was prepared.

[0067] Using DMP5 in Example 1 as component A, P5Q as component B, and acetone as component C, and controlling the molar ratio of DMP5:P5Q to 1:1, the kit 2-3 of the present invention was prepared.

[0068] Using DMP5 in Example 1 as component A, P5Q as component B, ethyl acetate as component C, and controlling the molar ratio of DMP5:P5Q to 1:1, the kit 2-4 of the present invention was prepared.

[0069] Using DMP5 in Example 1 as component A, P5Q as component B, and chloroform as component C, and ...

Embodiment 3

[0071] Embodiment 3, the preparation of composition of the present invention

[0072] Take the P5Q and DMP5 in Example 1 (the molar ratio is 1:1), and mix them uniformly to obtain the composition of the present invention.

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Abstract

The invention relates to a kit and its application in preparing a visual organic solvent indicator and writing confidential documents. Specifically, a kit is provided, including the following components: component A: pillararene P[n]; component B: total oxidation product P[n]Q of pillararene. The kit may also include component C: an organic solvent. Experiments of the present invention have found that when the composition obtained by mixing P[n] and P[n]Q is exposed to different organic solvent vapors, the system will have different color changes. The formation of CT complexes, the formation time and color changes of CT complexes can easily realize the rapid visual identification of common organic solvents. In addition, the compositions and CT complexes of the present invention are highly stable and can be reused many times. Therefore, the kit of the present invention has very good application prospects in preparing visual organic solvent indicators, electrochemical sensing and writing confidential documents.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a kit and its application in preparing a visual organic solvent indicator and writing confidential documents. Background technique [0002] Pillararenes are a new class of supramolecular macrocycles with unique cavities and columnar molecular structures, and their unique host-guest chemistry and cavity size enable them to selectively recognize and trap specific small molecules. Therefore, the emergence of pillararenes has accelerated the development of supramolecular chemistry and provided new opportunities for materials chemistry. Since they were first reported in 2008, pillararenes have become key players in supramolecular chemistry. [0003] The known document "Preparation of Polymer Hydrogel Based on Pillar[5]arene and Visual Detection of Paraquat, Acta Polymer Sinica, No. 1, January 2017" discloses a polymer hydrogel containing pillar[5]arene Gel, which is a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D11/50C09D11/54C09D11/16G01N21/78
CPCC09D11/16C09D11/50C09D11/54G01N21/78
Inventor 杨成
Owner SICHUAN UNIV
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