Preparation method and application of a molecularly imprinted electrochemiluminescent sensing material

Abstract

The invention discloses a preparation method and application of an adsorbed trace amount 2-methyl-4-chlorophenoxyacetic acid (MCPA) molecularly imprinted electrochemical luminescence sensing material based on quantum dot electrochemiluminescence. The preparation method of this sensing material: prepare the functional material of gold nanoparticles and CdSe / ZnS quantum dots of sodium 2-mercaptoethanesulfonate and p-mercaptothiophenol functional modification, and mix MCPA with the prepared functional material , use electrochemical polymerization to form a film to modify the material on the surface of the gold electrode, and prepare the electrode modified by the dianiline cross-linked nano-gold and the quantum dot network array molecularly imprinted electrochemiluminescent material after elution of MCPA. The invention has the advantage of adopting the method of electropolymerization to synthesize the quantum dot molecule imprinted electrochemiluminescence sensing material in one step. The sensing material combines the electrochemiluminescence of quantum dots with the specific recognition of molecularly imprinted polymers, overcomes the shortcomings of existing methods for preparing solid-state light-emitting electrodes, and has broad application prospects.

Description

technical field

[0001] The invention belongs to the technical field of preparation of photoelectrochemical sensing materials, and in particular relates to a preparation method of an adsorbed trace amount of 2-methyl-4-chlorophenoxyacetic acid molecularly imprinted electrochemiluminescence sensing material based on quantum dot electrochemiluminescence and application. Background technique

[0002] In recent years, with the continuous development of nanotechnology, quantum dots have developed rapidly as a new type of luminescent material. Their excellent luminescent properties have attracted the attention of many scientific researchers. They are widely used in sensing detection, biological imaging, biological probes and other fields. . It has been reported in the literature that quantum dot modified electrodes can be used for the detection of electrochemiluminescence. However, these methods lack specificity and cannot selectively adsorb the target and achieve accurate detect...

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