A viologen-based coordination polymer and its preparation method and its application as amine detection material

By designing and synthesizing a purple-sine-based coordination polymer crystal, the problems of existing amine detection methods and easy decomposition of materials are solved, and the effects of reversible, distinctive amine detection and multiple recycling are achieved.

CN116554493BActive Publication Date: 2025-03-18ZHENGZHOU UNIV
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Patent Information

Application Number
CN202310562750.7
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-18
Publication Date
2025-03-18
Estimated Expiration
2043-05-18

AI Technical Summary

Technical Problem

The existing amine detection methods require expensive equipment and complex testing methods, and the purple essence and its derivatives are easy to decompose during the detection of amines and cannot be reused multiple times, which limits its application.

Method used

A purple-sine-based coordination polymer crystal was designed and synthesized, with the molecular formula of {[Cd1.5(L')Cl3]·0.75H2O}n, which has reversible color conversion ability, can stably detect amine compounds and maintain the stability of the crystal structure.

Benefits of technology

The violet-based coordination polymer crystal can reversibly detect different types of amines, exhibit differentiated discoloration response characteristics, and has good structural stability, which can be recycled and reduces detection costs.

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Abstract

The present invention belongs to the field of functional complex chemistry, and discloses a viologen-based coordination polymer, a preparation method thereof, and an application thereof as an amine detection material. The complex is 1-(3,5-dicarboxybenzyl)-1′-(carboxymethyl)-4,4′-bipyridinium chloride (H 3 LCl 2 ) with CdCl 2 2.5H 2 O reaction preparation, the molecular formula is {[Cd 1.5 (L′)Cl 3 ]·0.75H 2 O} n (L′={1‑(3,5‑dicarboxybenzyl)‑1′‑methyl‑4,4′‑bipyridinium chloride}), wherein the carboxymethyl group anchored at one end of L undergoes an in-situ decarboxylation reaction under solvent thermal conditions to convert into a methyl group. The complex exhibits a discriminative color change response characteristic to different types of amines, can be used for the detection of amine compounds, and maintains good structural stability during the detection process, and can be recycled.
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