Synthesis and characterisation of ruthenium polypyridyl complexes containing a pendent hydroquinone grouping

Weldon, Frances; Vos, Johannes G.

doi:10.1016/s0020-1693(00)00180-8

Cited by 3 publications

(1 citation statement)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 38.2 shows, the most well-known Ru complexes, that is, ruthenium polypyridyl complexes, for DSSCs such as N3, N719, and N749 (black dye) [11,22,38]. Ruthenium polypyridyl complexes are synthesized by the reaction of the polypyridyl ligand with ruthenium trichloride [10,39]. The synthesis of polypyridyl ligands is well reported in the literature [40].…”

Section: Ruthenium Complexes For Dsscmentioning

confidence: 99%

Organometallic Compounds for Dye‐Sensitized Solar Cells (DSSC)

Ayele

Rick

et al. 2013

Advances in Organometallic Chemistry and Catalysis

View full text Add to dashboard Cite

Section: Ruthenium Complexes For Dsscmentioning

confidence: 99%

Organometallic Compounds for Dye‐Sensitized Solar Cells (DSSC)

Ayele

Rick

et al. 2013

Advances in Organometallic Chemistry and Catalysis

View full text Add to dashboard Cite

Ruthenium and Osmium: Low Oxidation States

Housecroft

2003

Comprehensive Coordination Chemistry II

View full text Add to dashboard Cite

Synthesis and characterisation of ruthenium complexes containing a pendent catechol ring

et al. 2004

View full text Add to dashboard Cite

This submission was created using the RSC Article Template (DO NOT DELETE THIS TEXT) (LINE INCLUDED FOR SPACING ONLY -DO NOT DELETE THIS TEXT)A series of [Ru(bipy) 2 L] + and [Ru(phen) 2 L] + complexes where L is 2-[5-(3,4-dimethoxyphenyl)-4H-1,2,4-triazol-3-yl]pyridine (HL1) and 4-(5-pyridin-2-yl-4H-1,2,4-triazol-3-yl)benzene-1,2-diol (HL2) are reported. The compounds obtained have been characterised using x-ray crystallography, NMR, UV/Vis and emission spectroscopies. Partial deuteriation is used to determine the nature of the emitting state and to simplify the NMR spectra. The acid-base properties of the compounds are also investigated. The electronic structure of the HL1 complex is examined using ZINDO. Electro and spectroelectrochemical studies on [Ru(bipy) 2 (L2)] + suggest that proton transfer between the catechol and triazole moieties on L2 takes place upon oxidation of the L2 ligand. IntroductionThe hydroquinone/quinone redox couple plays an essential role as electron mediator in the charge separation processes in photosynthesis. 1 As a result there has been extensive interest in the redox properties of quinone containing metal complexes and in their potential to act as electron acceptors or donors. 2 In these studies catechol based ligands are coordinated to a wide range of metals. 3 Much less attention has been paid to the interaction between metal centres and pendent hydroquinone/quinone groupings, although such materials may participate in light induced electron transfer reactions. 4 We are presently involved in a systematic study of the electrochemical and photophysical properties of ruthenium complexes containing pendent hydroquinone/quinones. 5,6 In an earlier study on ruthenium polypyridyl complexes incorporating pyridyltriazole ligands with free hydroquinone groupings, electrochemically induced intramolecular protonation of the ruthenium centre was observed upon oxidation of the hydroquinone moiety. 6 In this contribution the synthesis and deprotection of the methoxy complexes [Ru(bipy) 2 (L1)]PF 6 .5H 2 O and [Ru(phen) 2 (L1)]PF 6 .2H 2 O (where HL1 is 2-[5-(3,4-dimethoxyphenyl)-4H-1,2,4-triazol-3-yl]pyridine) to produce the catechol type complexes with the ligand HL2 4-(5-Pyridin-2-yl-4H-1,2,4-triazol-3-yl)benzene-1,2-diol are described (for ligand structures see Figure 1). The partially deuteriated analogues [Ru(d 8 -bipy) 2 (L1)] + and [Ru(d 8 -phen) 2 (L1)] + are also described. The materials obtained have been characterised by X-ray crystallography and 1 H-NMR spectroscopy. The absorption, emission, photophysical and electrochemical properties of the complexes are also examined. To aid interpretation of the results obtained, semi-empirical calculations using ZINDO were carried out on [Ru(bipy) 2 (HL1)] 2+ and [Ru(bipy) 2 (L1)] + , where the triazole moieties are in the protonated and deprotonated states respectively. ExperimentalAll synthetic reagents were of commercial grade and used without further purification. The solvents used in spectroscopic measurements were HPLC grade. Perdeute...

show abstract

Synthesis and characterisation of ruthenium polypyridyl complexes containing a pendent hydroquinone grouping

Cited by 3 publications

References 22 publications

Organometallic Compounds for Dye‐Sensitized Solar Cells (DSSC)

Organometallic Compounds for Dye‐Sensitized Solar Cells (DSSC)

Ruthenium and Osmium: Low Oxidation States

Synthesis and characterisation of ruthenium complexes containing a pendent catechol ring

Contact Info

Product

Resources

About