Ruthenium(II) polypyridyl compounds have characteristics such as their wide and intense absorption in the visible region of the spectrum, which favor their use in solar energy conversion processes. Molecular engineering that involves the use of suitable ligands allows the tuning of the energy levels of these compounds in order to perform useful functions more efficiently. Ruthenium(II) tris-heteroleptic compounds are very interesting in this field since they can be employed to evaluate how changing the ligands modify their global properties and modulate their energy levels. This project aims to evaluate the influence of electron donating or withdrawing groups on the formation kinetic of this type of compound. It is also objective of this project to synthesize and characterize some ruthenium(II) tris-heteroleptic compounds having the general formula cis-[Ru(R2-phen)(dcbH2)(NCS)2]; R = electron donor or withdrawing substituents, dcbH2 = 4,4'-dicarboxylic acid-2,2'-bipyridyl, as well as to carry out investigations about their photoreactivity aiming energy conversion processes. Thus it will be possible to understand the behavior of the species and modulate their properties aiming the improvement of the desired functions on the light energy conversion process into electrical or chemical output.
News published in Agência FAPESP Newsletter about the scholarship: