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Porphyrin dyes for TiO2 sensitization
Abstract
A series of six new free base porphyrins were synthesized for use as photosensitizers in TiO2 dye-sensitized photo-electrochemical cells. The porphyrin sensitizers are attached to the TiO2 photoelectrode by phosphonic or carboxylic acid anchoring groups. These anchoring groups were placed on different substitution positions on the porphyrin moiety. The new dyes were fully characterized by absorption and emission spectroscopies, electrochemistry and photo-electrochemical spectroscopy. The photo-electrochemical performances of the sensitizers are discussed and compared to the known 5,10,15,20-tetra(4-carboxyphenyl)porphyrin sensitizer. In this study, we show that the nature of the anchoring group (phosphonic or carboxylic acids) has little impact on the photo-electrochemical performance of the cell. However, the substitution position of the anchoring group on the porphyrin strongly influences the monochromatic photon-to-electron conversion efficiency of the resulting cell. The results indicate that the electronic coupling of this type of dye with the d-band of the semiconductor is one of the key parameters in the design of efficient sensitizers.
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Cites
The exciton model in molecular spectroscopy
Kasha, M., Rawls, H. R., & Ashraf El-Bayoumi, M. (1965) · Pure and Applied Chemistry · doi:10.1351/pac196511030371 · Cited by 4,253
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Hagfeldt, A., Boschloo, G., Sun, L., Kloo, L., & Pettersson, H. (2010) · Chemical Reviews · doi:10.1021/cr900356p · Cited by 8,931
Large π-Aromatic Molecules as Potential Sensitizers for Highly Efficient Dye-Sensitized Solar Cells
Imahori, H., Umeyama, T., & Ito, S. (2009) · Accounts of Chemical Research · doi:10.1021/ar900034t · Cited by 1,012
Meso-Substituted Porphyrins for Dye-Sensitized Solar Cells
Urbani, M., Grätzel, M., Nazeeruddin, M. K., & Torres, T. (2014) · Chemical Reviews · doi:10.1021/cr5001964 · Cited by 940
Surface Modification Using Phosphonic Acids and Esters
Queffélec, C., Petit, M., Janvier, P., Knight, D. A., & Bujoli, B. (2012) · Chemical Reviews · doi:10.1021/cr2004212 · Cited by 868
Porphyrins and phthalocyanines in solar photovoltaic cells
Walter, M. G., Rudine, A. B., & Wamser, C. C. (2010) · Journal of Porphyrins and Phthalocyanines · doi:10.1142/s1088424610002689 · Cited by 668
Metadata
- Authors
- Odobel, F., Blart, E., Lagrée, M., Villieras, M., Boujtita, H., El Murr, N., Caramori, S., & Alberto Bignozzi, C.
- Venue
- Journal of Materials Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2003-01-30
- Volume
- 13
- Issue
- 3
- Pages
- 502-510
- ISSN
- 0959-9428 (ISSN-L)
- 1364-5501
- OpenAlex
- W2090076246
- Cited by
- 230
- References
- 1
- FWCI
- 7.59
- Type
- journal article
- Language
- eo
- Open access
- closed
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- Odobel, F., Blart, E., Lagrée, M., Villieras, M., Boujtita, H., El Murr, N., Caramori, S., & Alberto Bignozzi, C. (2003). Porphyrin dyes for TiO2 sensitization. Journal of Materials Chemistry. https://doi.org/10.1039/b210674d
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