Preparation And Study On Physical Property Of Thiodiene Metal Complexes

With the control of carbon emissions,people are becoming more and more concerned about the quality of the environment and the use of clean energy is becoming more and more common.Among the many clean energy sources,the innovation and development of thin-film organic solar cells have attracted attention.Dye sensitized solar cells are one of the most popular research projects in thin film organic solar cells.With the continuous development of research and process and materials,new research results have emerged.Since the photovoltaic efficiency of a cell depends to some extent on the light absorption performance of the dye,near-infrared dyes are a frequently utilized class of active materials as functional materials for dye sensitized solar cell coatings.Due to the structural versatility,high degree of commercialization and simple functionalization modifications,it has been used in different applications.Thiodiene metal complexes are of great interest in the study of near-infrared dyes because of their excellent light absorption properties,good photothermal stability and a relatively large absorption band in the near-infrared region.Due to the simple preparation process and cheaper price,it is widely used in the research field of dye sensitized solar cells.For the preparation of thiodiene metal complexes,two alkoxynaphthalene ethylenediones were synthesized by the Foucault reaction with oxalyl chloride using ethoxynaphthalene and propoxynaphthalene as raw materials.Synthesis of two neutral thiodiene metal complexes by the reaction of alkoxynaphthalene ethylenedione and phosphorus pentoxide with nickel chloride hexahydrate,respectively,catalyzed by ammonium sulfate.Six ionic thiodiene metal complexes were synthesized by reacting neutral thiodiene metal complexes with three halogenated salts separately under the condition of triethylamine.The structural characterization of eight thiodiene metal complexes was carried out by IR Infrared absorption spectrum,UV absorption spectra and HRMS analysis.In order to investigate the physical properties of thiodiene metal complexes,eight thiodiene metal complexes were analyzed and tested by UV absorption spectra and IR Infrared absorption spectrum to determine their photothermal stability in solution and solid state under different times of illumination and heating in solution and solid state.Determine the effect of neutral and ionic structures on the stability of dyes by calculating the life time of the corresponding dyes.Eight thiodizene metal complexes were analyzed and tested by UV absorption spectra and the wavelengths corresponding to their UV maximum absorption peaks were measured in organic solvents of different polarities.The eight thiodizene metal complexes were analyzed and tested by CV and their redox potentials were measured separately to determine the ease of electron gain and loss.The above experimental methods further provide for the application of the dyes.