A sensor array and its application in metal ion-assisted identification

Abstract

The invention provides a sensor array and its application in metal ion assisted identification. The sensor array includes a probe array composed of the following four conjugated polyelectrolytes: the conjugated polyelectrolyte shown in Formula I, the conjugated polyelectrolyte shown in Formula II, the conjugated polyelectrolyte shown in Formula III and the conjugated polyelectrolyte shown in Formula IV. Conjugated polyelectrolytes. The invention adopts the unique photophysical properties of conjugated polyelectrolytes, which can amplify the reaction signal; four kinds of conjugated polyelectrolytes are combined to form an array sensor, because each of them has different quenching properties with different metal ions Efficiency, so the collected signals are arranged in order, and the data is processed into the fluorescence intensity ratio in the histogram. Each metal ion has a different characteristic map. Compared with the general specific detection of a certain metal ion by a certain probe, it does not require complicated molecular design and synthesis, nor does it need to be modified by some fluorophores, which greatly reduces the cost and operational complexity. .

Description

technical field [0001] The invention belongs to the field of metal ion detection, and in particular relates to a sensor array and its application in metal ion auxiliary identification. Background technique [0002] Metal ions have hidden dangers in the environment and biological health. Nowadays, there is an increasing demand for developing new sensing materials and inventing new metal ion detection strategies. Fluorescence-based methods are well suited due to their sensitivity and simplicity. [0003] Conjugated polyelectrolytes (CPEs) are based on the backbone of conjugated polymers, and the side chains are modified to link water-soluble groups, such as carboxylate, sulfite, phosphate, and alkylamino, etc., to form a class of polymers. Conjugated polyelectrolytes have the advantages of signal amplification effect and easy structure modification, and its delocalized electronic structure gives attractive optical and electrochemical properties, especially their large molar ...

AI Technical Summary

Problems solved by technology

Although a large number of examples of results support this traditional approach, it also has the disadvantage of selectivity

When designing a specific, single sensor for each analyte, it often takes a lot of work in the preparation of relevant sensing materials and optimization for different sensing needs, which is time-consuming and labor-intensive.

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