Studies about the use niobium pentachloride in multicomponent reactions toward the...
| Grant number: | 12/24199-8 |
| Support type: | Scholarships in Brazil - Master |
| Effective date (Start): | March 01, 2013 |
| Effective date (End): | February 28, 2015 |
| Field of knowledge: | Physical Sciences and Mathematics - Chemistry |
| Principal Investigator: | Luiz Carlos da Silva Filho |
| Grantee: | Giovanny Carvalho dos Santos |
| Home Institution: | Faculdade de Ciências (FC). Universidade Estadual Paulista (UNESP). Campus de Bauru. Bauru , SP, Brazil |
Abstract The constant search for alternative energy sources has attracted the interest of several research groups around the world. Among the various renewable energy sources, solar energy is gaining 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 prominence in the scientific media, because they are devices that have a low cost for making and present a good conversion efficiency of solar energy into electricity. Due to this, the synthetic organic chemistry appears as an excellent tool for the development of dye-sensitized solar cells, enabling the synthesis of new types of dyes and also through structural modifications in organic dyes already used, the potentiation of them to a greater conversion of solar energy into electricity. Therefore, in this project, we propose to perform a study for obtaining different quinolines derivatives and check their potential for application as sensitizing dyes in photoelectrochemical devices of Grätzel. To obtain the quinolines derivatives we will use as starting point the multicomponent reaction between benzaldehyde, aniline and phenylacetylene derivativies in the presence of niobium pentachloride (NbCl5). After the preparation of the quinolines derivatives, these will be submitted to analysis of structural, photochemistry and photophysics characterization, so we can facilitate their application as dye sensitizers for photoelectrochemical devices of Grätzel. Another aim is to check the effect of the substituent groups, be they donors or withdrawing electrons in proportion and yield of products formed, in the reaction times and absorption spectra in the UV-Vis. Also we will check the influence of different proportions of NbCl5 (10, 25 and 50 mol%) in these reactions. | |