A new synthesised triphenylamine-based dye having a branched structure with one OH-ending branch able to interact with the surface hydroxyl moieties of mesoporous TiO2 is reported. Optical properties of the dye-titania hybrid material are presented and the higher efficiency of the dye on pure anatase TiO2 compared to the commercial Degussa P25, which contains a rutile phase component, is confirmed. The optical and chemical properties of the dye make it a promising candidate as a metal-free dye for DSSCs or as a host for a variety of transition or main group metal ions for different applications.
Acknowledgements.
The authors acknowledge financial support from the Universities of Venice and Málaga and the Consortium INSTM (Italy). Projects CTQ2012-37925-C03-03 and CTQ2012-30703 of Ministerio de Economía y Competitividad (Spain) and project of Excellence P12 RNM 1565 (Junta de Andalucía, Spain) are also acknowledged for financial support.
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