Antipyrine derivative probe material for naked eye detections and identifications of Cr3+ and Cu2+ as well as preparation method thereof

Abstract

The invention discloses a colorimetric probe compound containing carbazole-antipyrine Schiff base for detecting Cr3+ and Cu2+ as well as identifying naked eyes and preparation method thereof. The Schiff base derivative containing carbazole group is obtained by condensation reaction of aldehyde group based on carbazole and amino group in 4-amino antipyrine, and the molecular characteristic is that the Schiff base compound structure contains N-substituted antipyrine group and -C=N group and carbazole group; the probe compound comprises Schiff base derivatives containing C=N structure, simultaneously the molecule contains O and N and other coordination atoms, which can form coordination molecules with some metal ions, thereby generating special UV and fluorescence phenomenons. The compound can realize identifications of Cu2+ / Cr3+ ions and quantitative determination by UV-visible spectrophotometry method, and can be used as a colorimetric probe for identifications of Cu2+ / Cr3+ according to obvious color changes, moreover, with the existences of other ions, the product has the advantages of good interference resistance, high selectivity and sensitivity.

Description

technical field [0001] The invention relates to the field of metal ion detection and selective colorimetric identification, in particular to a Cu 2+ 、Cr 3+ Synthesis of probe molecules containing carbazole-antipyrine Schiff base derivatives for naked-eye recognition and detection and their ion recognition properties. Background technique [0002] In recent years, transition metal ions play an important role in the environment and life sciences, so designing and synthesizing probe molecules that can selectively recognize transition metal ions has attracted more and more attention. Among many transition metal ions and heavy metal ions, copper ions are closely related to our life. Copper is one of the essential trace heavy metal elements in animals and plants. There are about 20 kinds of functions that require the participation of copper ions, such as cytochrome oxidase, superoxide dismutase and tyrosinase. However, if the content of copper ions in the body is too high, the ...

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Problems solved by technology

[0003] All along, for Cu 2+ and Cr 3+ The detection methods of ions mainly include atomic absorption method, spectrophotometry, high performance liquid phase analysis method and electrochemical analysis method, etc., but in the above methods, some reagents have poor selectivity, and when used for the analysis of some complex samples, often need With proper pretreatment; some instruments and equipment are complex and costly, and they are not ideal for identifying and detecting Cu in organisms. 2+ 、Cr 3+ As a simple, effective and economical method, the colorimetric and fluorescence analysis methods of ions are becoming one of the most widely used methods in the biological world with high sensitivity and the ability to identify them with the naked eye.

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