Preparation of phosphonated polypyridyl ligands to anchor transition-metal complexes on oxide surfaces: application for the conversion of light to electricity with nanocrystalline TiO<sub>2</sub>films

Péchy, Péter; Rotzinger, François P.; Nazeeruddin, M. K.; Kohle, Oliver; Zakeeruddin, Shaik M.; Humphry‐Baker, Robin; Grätzel, Michaël

doi:10.1039/c39950000065

Cited by 254 publications

(99 citation statements)

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“…A comparison of Tables 2 and 3 suggests that the phosphonic acid anchoring ligand 4 is favoured over the dicarboxylic acid anchor 3, an observation that has been noted by Grätzel [31] and is also true for copper(I) dyes [10,30,32]. However, for both anchoring domains, values of J SC show that electron injection is extremely poor.…”

Section: Dssc Performancesmentioning

confidence: 75%

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

et al. 2015

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FTO/TiO 2 electrodes have been functionalized with {Zn(tpy anchor )(tpy ancillary )} 2+ dyes (tpy = 2,2':6',2''-terpyridine) using a stepwise method to sequentially introduce (i) the anchoring ligand tpy anchor (either a dicarboxylic acid or a diphosphonic acid), (ii) Zn DSSC measurements show that the {Zn(tpy anchor )(tpy ancillary )} 2+ dyes give poor photon-tocurrent efficiencies, values of the short circuit current density (J SC ) and the external quantum efficiency (EQE) spectra are consistent with very poor electron injection.Introducing longer alkoxy chains in place of methoxy substituents in the holetransporting domains in tpy ancillary is beneficial, resulting in increased J SC and V OC , although values remain low despite the 'push-pull' design of the sensitizers.

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Section: Dssc Performancesmentioning

confidence: 75%

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

et al. 2015

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“…Aeroxide VP P90 fumed titanium dioxide was kindly donated by Evonik. 2,2′:6′,2″-terpyridin-4′-ylphosphonic acid was synthesized according to previously published procedures [25,[37][38][39].…”

Section: Methodsmentioning

confidence: 99%

Rational design of a material for rapid colorimetric Fe2+ detection

et al. 2016

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Wereport on the rational design of a novel TiO2 based screen-printed material suitable for sensitive and selective\ud detection of iron ions in water. This includes the synthesis and characterization of large mesoporous TiO2 nanostructures,\ud screen-printing of thick titania films on glass surfaces and their functionalization with 2,2′:6′,2″-\ud terpyridin-4′-ylphosphonic acid (terpy). The ultra-high affinity between iron ions and the TiO2-anchored terpy\ud receptor makes this system potentially applicable to the analysis of iron in environmental, food, biological, and\ud biomedical systems by a readily quantifiable colour change. Rapid (b30 s) colour change of the material from\ud white to magenta permits easy detection of as low as 0.3 ppm of Fe2+ by the naked eye. The intensity of the colour\ud change depends on the nature of the nanoparticles, the overall TiO2 film thickness, and the Fe2+ concentration.\ud The material was characterized using profilometry, diffuse reflectance UV–vis spectroscopy, and X-ray\ud photoelectron spectroscopy (XPS) before and after treatment with aqueous solutions of Fe2+. The designed material\ud shows colour reversibility upon treatment with EDTA solutions, which allows for multiple reuses of the\ud same film with no effect on sensitivity

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“…To improve adhesion, viologen derivatives involving the phosphoric acid residue, P(O)(OH) 2 , were synthesized. The phosphoric acids are known to interact strongly with the TiO 2 nanoparticle surface [25]. We prepared two viologen derivatives with phosphoric acid groups: a symmetric derivative with two phosphoric acid groups, and an asymmetric derivative with only one phosphoric acid group.…”

Section: Introductionmentioning

confidence: 99%

A new approach for design of organic electrochromic devices with inter-digitated electrode structure

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et al. 2009

Solar Energy Materials and Solar Cells

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Preparation of phosphonated polypyridyl ligands to anchor transition-metal complexes on oxide surfaces: application for the conversion of light to electricity with nanocrystalline TiO₂films

Cited by 254 publications

References 8 publications

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

Rational design of a material for rapid colorimetric Fe2+ detection

A new approach for design of organic electrochromic devices with inter-digitated electrode structure

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Preparation of phosphonated polypyridyl ligands to anchor transition-metal complexes on oxide surfaces: application for the conversion of light to electricity with nanocrystalline TiO2films

Cited by 254 publications

References 8 publications

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

Alkyl chain-functionalized hole-transporting domains in zinc(II) dye-sensitized solar cells

Rational design of a material for rapid colorimetric Fe2+ detection

A new approach for design of organic electrochromic devices with inter-digitated electrode structure

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Product

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Preparation of phosphonated polypyridyl ligands to anchor transition-metal complexes on oxide surfaces: application for the conversion of light to electricity with nanocrystalline TiO₂films