Bimetallic tartrate complexes for microbiosensors

What is it about?

In the present work, the basic principles of the formation of heterophase bimetallic sensor-sensitive sediments under the action of laser radiation have been analyzed, and new reference data have been accumulated on the structure of tartrate complexes containing simultaneously two metals.

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Photo by Nick Night on Unsplash

Photo by Nick Night on Unsplash

Why is it important?

The structure of transition metal complexes in aqueous solutions is the subject of numerous studies. Bimetallic complexes containing two transition metal cations in the shell of one ligand are of increased interest. There is an information gap in this area even for ligands such as tartrate and trilone. The study provides new information on the structure of bimetallic tartrate complexes in solutions containing simultaneously copper, nickel, silver, iron, and cobalt. The development of new materials for enzyme-free electrochemical microbiosensors for rapid analysis of the composition of complex organic mixtures, including the content of hydrogen peroxide and glucose in human blood, is an urgent scientific problem. Laser synthesis methods show good promise in this direction, including LCLD - laser deposition of miniature bimetallic deposits invisible to the eye from aqueous solutions of transition metal salts. High sensory activity in the reactions of electrochemical oxidation/reduction of glucose and hydrogen peroxide is demonstrated by heterophase LCLD precipitates. They can be obtained from solutions or complexes containing two transition metals. The result of precipitation may be related to the structure and concentration and pH regions of existence of such complexes. This relationship has not been studied to date, so the answer to this question was set as a research task. The study compared the structure of complexes in solution and the physicochemical properties of sediments.