The constant search for alternative energy sources has attracted the interest of several research groups. Among the various renewable energy sources, solar has gained prominence due to its huge capacity expansion, which makes it a promising source of renewable and sustainable energy. Based on this idea, the development of solar cells sensitized by organic dyes has received great attention in the scientific means, because it is devices that have a low cost to your manufacturing and a good conversion efficiency of solar energy into electricity. In this context, synthetic organic chemistry emerged as an excellent tool for the development of dye-sensitized solar cells, allowing the synthesis of new types of dyes and those structural changes also been used for enhancement thereof, aiming to improve energy conversion.Therefore, since the last two decades, many research groups have focused their efforts in developing and optimizing all processes and materials that are a DSSC (dye-sensitized solar cells ), in this project we propose to conduct a study of the use of niobium pentachloride, as Lewis acid, in quinolines synthesis reactions for use as sensitizing dyes of structure donor-p-acceptor type with potential application in organic electronic devices, in particular DSSCs. These derivatives will be submitted to analysis of structural, photochemistry and photophysics, so that we can facilitate your application. It is intended to also check what is the effect of structural changes to the molecule in relation to different types of substituents in specific positions to observe responses in proportion and yield of the products formed in the reaction times and the characterization of these optics. Made the appropriate characterization, start the preparation and characterization of thin films of TiO2 and Nb2O5 and then mount photoelectrochemical characterization of DSSCs. In addition, the synthesized molecules also will undergo tests to see potential applications in other organic electronic devices.
News published in Agência FAPESP Newsletter about the scholarship: