Ruthenium(ii) multi carboxylic acid complexes: chemistry and application in dye sensitized solar cells

Abstract

Novel ruthenium multi carboxylic complexes (RMCCs) have been synthesized by using ruthenium nitrosyl nitrate, 1,2,4,5-benzenetetracarboxylic acid (H4btec) and 4,7-diphenyl-1,10-phenanthroline (BPhen) as photosensitizers for titanium dioxide semiconductor solar cells. The complexes were characterized by (1)H-NMR, FT-IR, UV-Vis, ICP and CHN analyses. The reaction details and features were then described. SEM analysis revealed that the penetration of dyes into the pores of the nanocrystalline TiO2 surface was improved by increasing the number of btec units. The solar energy to electricity conversion efficiency of complexes shows that the number of attached carboxylates on a dye has an influence on the photoelectrochemical properties of the dye-sensitized electrode. An incident photon-to-current conversion efficiency (IPCE) of 13% at 510 nm was obtained for ruthenium complexes with three btec units.

Simultaneous enhancement of fluorescence and solubility by N-alkylation and functionalization of 2-(2-thienyl)imidazo[4,5-f][1,10]-phenanthroline with heterocyclic bridges

“…In recent years, ruthenium complexes containing 1,10-phenanthroline based ancillary ligands have been used in studies of dye-sensitized solar cells (DSCs). [35][36][37][38] In particular, TPA and carbazole involved ancillary ligands have shown good DSC performance [39][40][41] with high power-conversion efficiencies (PCEs). Therefore, in this work, TPA and carbazole substituted This journal is © The Royal Society of Chemistry 2015 compounds 2 and 9 were used as the ancillary ligands to react with half molar ratio of [RuCl 2 (p-cymene)] 2 and then with excess ammonium thiocyanate to produce corresponding ruthenium(II) sensitizers BM3 and BM4 (Scheme 2).…”

Preparation of Neutral trans - cis [Ru(O2CR)2P2(NN)], Cationic [Ru(O2CR)P2(NN)](O2CR) and Pincer [Ru(O2CR)(CNN)P2] (P = PPh3, P2 = diphosphine) Carboxylate Complexes and their Application in the Catalytic Carbonyl Compounds Reduction

“…Acetate ruthenium compounds in combination with carbene ligands, namely [RuBr­(OAc)­(PPh 3 )­(P-aNHC)] and [Ru­(OAc)­(P-aNHC) 2 ]Br (P-aNHC = phosphine-abnormal-NHC ligands), have displayed high rates and productivities in TH and in fast Oppenauer-type oxidation reactions (TOFs of up to 600000 h –1 ) . With regard to other applications, ruthenium carboxylate complexes have been described as efficient photosensitizers for TiO 2 semiconductor solar cells . New anticancer agents have been prepared by employing ruthenium carboxylate complexes with the aim of obtaining compounds with good solubility in the culture medium .…”

Synthesis, crystal structure, DFT studies and photophysical properties of a copper(I)–triphenylphosphane complex based on trans-(±)-2,4,5-tris(pyridin-2-yl)-2-imidazoline

“…The synthesis of new transition-metal complexes to be used as sensitizers in dye-sensitized solar cells (DSSCs) is an area of continuing interest (Shahroosvand et al, 2014;Polo et al, 2004;Yu et al, 2010;Hafez et al, 2010). In this context, ruthenium(II) complexes have received particular attention because of their fascinating properties, giving rise to many potential applications.…”