Tuning of Ruthenium Complex Properties Using Pyrrole- and Pyrrolidine-Containing Polypyridine Ligands

Martineau, David; Beley, Marc; Gros, P.; Cazzanti, Silvia; Caramori, Stefano; Bignozzi, Carlo Alberto

doi:10.1021/ic062042f

Cited by 51 publications

(44 citation statements)

References 33 publications

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“…Ligands L 1 , L 2 and L 3 were prepared in acceptable yields through Stille cross-couplings [12][13][14][15][16] between 2-(tributylstannyl)pyridine or 4-(1H-pyrrol-1-yl)-2-(tributylstannyl)-pyridine [14] and the appropriate 2-chloro-(methoxycarbonyl)-pyridine. Ligand L 2 was prepared for purposes of comparison.…”

Section: Resultsmentioning

confidence: 99%

Remarkable Effect of 4‐Substituted 2,2′‐Bipyridine Ligands on the Stereochemistry of Ruthenium(II) Complexes

2008

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Abstract[RuL3](PF6)2 complexes containing 4‐alkoxycarbonyl‐substituted unsymmetrical bipyridine ligands (L) have been obtained exclusively as the fac isomers by simple reaction of L with ruthenium(III) chloride in ethylene glycol under microwave irradiation. The position of the alkoxycarbonyl group on the pyridine ring and its transesterification by ethylene glycol were found critical for stereocontrol during ruthenium coordination. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)

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Section: Resultsmentioning

confidence: 99%

Remarkable Effect of 4‐Substituted 2,2′‐Bipyridine Ligands on the Stereochemistry of Ruthenium(II) Complexes

2008

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“…One such class of species is the cobalt polypyridyl complexes such as Co II/III tris(4,4 00 -di-tert-butyl-2,2 00 -dipyridyl) perchlorate. [319][320][321][322][323] Gibson et al employed this redox couple in a NiO-based p-type device in conjunction with two perylene-based dyes, PI and PINDI (Figure 3.74). [324] The PINDI 'dyad' contained a coupled naphthalene diimide acceptor unit which had a more positive reduction potential than the PI absorber (PI 0/-¼ -0.66 V vs NHE, NDI 0/-¼ -0.19 V vs NHE).…”

Section: P-type and Tandem Dye-sensitised Solar Cellsmentioning

confidence: 99%

Solar Energy Materials

Gibson

Hagfeldt

2011

Energy Materials

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“…[47][48][49][50] An easily accessible homoleptic Ru complex containing dissymmetrical bipyridine in the presence of the mediator mixture of [Co(dtb) 3 ] 2+ and [Fe(dmb) 3 ] 2+ reached the best results, which offered an adequate balance between regeneration of the dye and back recombination with photoinjected electrons in TiO 2 . Thus the electron recombination decreases to improve the electron-collection efficiency.…”

Section: Co-bipyridine-based Mediatorsmentioning

confidence: 99%

Transition metal complex redox shuttles for dye-sensitized solar cells

2015

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An important link exists between the selected molecular structure of a sensitizer and the employed shuttle electrolyte to achieve high conversion efficiency in dye-sensitized solar cells (DSSCs). So far, the most commonly used redox mediator is iodide/triiodide (I − /I 3 − ), which has shown advantages such as desirable kinetic properties and high carrier collection efficiencies. However, it has several disadvantages including a low redox potential, corrosion toward metal materials and competitive blue light absorption. In this respect, the transition metal complex electrolytes represent valuable alternatives to replace with traditional I − /I 3 − couples, which can overcome the drawbacks of I − /I 3 − electrolyte. In recent years, the best efficiency of DSSC was achieved by porphyrin-sensitized solar cells with transition metal complex-based redox electrolyte. In particular, in 2014, the Gratzel group published a record DSSC efficiency of 13 % by using a new porphyrin sensitizer with Co-polypyridyl-based electrolyte. Here, we plan the engineering of structure of new transition metal complex electrolyte and the design of molecular structure of sensitizer in touch. The main focus will be held on the correlation between photophysical and electrochemical properties of the metal complex mediators and their DSSC performances. This review provides an in-depth investigation on the exciting alternative electrolyte shuttle in DSSCs and their various advantages that are endowed with both high conversion efficiency and non-corrosive properties. Fig. 11 Device stability of [Fe(CN)6] 4-/3− mediated devices during light soaking with green (stars) and blue (pentagons) light. The performance parameters a) Voc b) Jsc c) FF and d) efficiency were measured at filtered (480 nm cut off) one sun AM 1.5 light. Reproduced with permission from ref. 85.

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Tuning of Ruthenium Complex Properties Using Pyrrole- and Pyrrolidine-Containing Polypyridine Ligands

Cited by 51 publications

References 33 publications

Remarkable Effect of 4‐Substituted 2,2′‐Bipyridine Ligands on the Stereochemistry of Ruthenium(II) Complexes

Remarkable Effect of 4‐Substituted 2,2′‐Bipyridine Ligands on the Stereochemistry of Ruthenium(II) Complexes

Solar Energy Materials

Transition metal complex redox shuttles for dye-sensitized solar cells

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