Investigation of the formation kinetics of tris-heteroleptic Ru(II) compounds with potential application in energy conversion

• Grant number: 15/00605-5
• Support type: Scholarships in Brazil - Master
• Effective date (Start): September 01, 2015
• Effective date (End): January 31, 2017
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Inorganic Chemistry
• Principal researcher: André Sarto Polo
• Grantee: Andressa Vidal Muller
• Home Institution: Centro de Ciências Naturais e Humanas (CCNH). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil

Abstract

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.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SAMPAIO, RENATO N.; MUELLER, ANDRESSA V.; POLO, ANDRE S.; MEYER, GERALD J. Correlation Between Charge Recombination and Lateral Hole-Hopping Kinetics in a Series of cis-Ru(phen `)(dcb)(NCS)(2) Dye-Sensitized Solar Cells. ACS APPLIED MATERIALS & INTERFACES, v. 9, n. 39, p. 33446-33454, OCT 4 2017. Web of Science Citations: 15.

ANDRESSA V. MÜLLER; MÁRCIA R. GONÇALVES; LUIZ D. RAMOS; ANDRÉ S. POLO; KARINA P. M. FRIN. A importância do estado excitado 3MLCT de compostos de Ru(II), Re(I) e Ir(III) no desenvolvimento de fotossensores, oleds e fotorredução de CO2. Química Nova, v. 40, n. 2, p. 200-213, Fev. 2017.

MUELLER, ANDRESSA V.; RAMOS, LUIZ D.; FRIN, KARINA P. M.; DE OLIVEIRA, KLEBER T.; POLO, ANDRE S. A high efficiency ruthenium(II) tris-heteroleptic dye containing 4,7-dicarbazole-1,10-phenanthroline for nanocrystalline solar cells. RSC ADVANCES, v. 6, n. 52, p. 46487-46494, 2016. Web of Science Citations: 9.