Self-assembly preparation of organic/inorganic compound film by transient metal substitution of polyoxometallate and polyamide-amine

Abstract

This invention relates to a preparation method of an organic-inorganic composite film which is self-mounted from transitional metal substituted polyoxometallate and Polyamide (PI)-amine tree-form molecule and is provided with electrocatalysis activity. The technical proposal is: a glassy carbon electrode or conductive glass substrate is cleaned and then go through cationization to obtain a ready-for-use substrate filmed by the glassy carbon electrode or the conductive glass substrate; the ready-for-use substrate is alternatively immerged into the transitional metal substituted polyoxometallate solution and PAMAM tree-form molecule for circulating scanning, so as to complete the self mounting of the film. By repeating the above steps, the organic-inorganic composite film with different layer numbers can be prepared. The composite film prepared by the method of the invention has the advantages of simple operation, short filming time and good uniformity, and the composite film reserves various electrochemical properties of TMPS. In particular, by using the PAMAM tree form molecule as the organic cation, the composite film is provided with high stability and high permeability. The composite film is expected to be applied to chemically modified electrodes and environmental catalysis.

Description

technical field

[0001] The invention relates to the preparation of an organic-inorganic composite thin film, in particular to the preparation of a transition metal substituted polyoxometalate and polyamide-amine dendrimer self-assembled organic-inorganic composite thin film with electrocatalytic activity. Background technique

[0002] The development of modern science and technology, especially information technology, electronic technology, photonic technology and ultra-large-scale integration technology, drives the structure of devices to develop in the direction of miniaturization, integration, multi-function and high reliability, and the intelligentization of materials and thin films put forward higher and higher requirements. The organic-inorganic composite film combines organic matter and inorganic matter at the molecular level, so that the material has both the flexible characteristics of organic matter and the rigidity of inorganic matter. At present, organic-inorgan...

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