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Effect of the Substrate Morphology on the Adsorption of Ru-bipyridyl Sensitizers on Anatase TiO2

Title data

Pérez León, Carmen ; Kador, Lothar ; Peng, Bin ; Thelakkat, Mukundan:
Effect of the Substrate Morphology on the Adsorption of Ru-bipyridyl Sensitizers on Anatase TiO2.
In: Physica Status Solidi A. Vol. 208 (2011) Issue 1 . - pp. 59-64.
ISSN 1521-396X
DOI: https://doi.org/10.1002/pssa.201026159

Project information

Project financing: Deutsche Forschungsgemeinschaft

Abstract in another language

The effects of the morphology of anatase TiO2 substrates on the adsorption nature of Ru-bipyridyl complexes with carboxylate groups as anchoring moieties have been investigated with infrared absorption spectroscopy and electron microscopy. The investigated dyes were the recently synthesized [Ru(dcbpyH2)2(bpy-TPA2)](PF6)2, Ru-TPA2, and the well-known (Bu4N)2[Ru(dcbpyH)2(NCS)2], N719, complexes. As substrates, TiO2 paste films and pristine anatase nanopowder were used. Scanning electron microscopy images show big differences in the grain size, shape, and dispersity of the titania nanoparticles. The attenuated total reflection Fourier transform infrared spectra suggest that the coordination of both complexes on the TiO2 paste films occurs via bidentate or bridging linkage. The adsorption of the dyes on pristine anatase nanopowder appears to be via bridging or bidentate chelate linkage for the dye N719 as well, however, the Ru-TPA2 complex appears to bind via unidentate or ester-like linkage or by direct physisorpion via H-bonding.

Further data

Item Type: Article in a journal
Refereed: Yes
Institutions of the University: Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Centres > Bayreuth Institute of Macromolecular Research - BIMF
Research Institutions > Collaborative Research Centers, Research Unit > SFB 481 Komplexe Makromolekül- und Hybridsysteme in inneren und äußeren Feldern
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Macromolecular Chemistry I
Research Institutions > Collaborative Research Centers, Research Unit
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professorship Applied Functional Polymers > Professorship Applied Functional Polymers - Univ.-Prof. Dr. Mukundan Thelakkat
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Professorship Applied Functional Polymers
Result of work at the UBT: Yes
DDC Subjects: 500 Science
500 Science > 500 Natural sciences
500 Science > 530 Physics
500 Science > 540 Chemistry
Date Deposited: 26 Mar 2015 16:32
Last Modified: 21 Jul 2016 08:21
URI: https://eref.uni-bayreuth.de/id/eprint/8642