Electrodeposition of dye-doped titania thin films.


Shacham R, Avnir D, Mandler D. Electrodeposition of dye-doped titania thin films. J. Sol-Gel Sci. Technol.Journal of Sol-Gel Science and Technology. 2004;31 (1/2/3) :329 - 334.

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We extend our novel low-voltage electrochem. method for oxide thin film formation from sol-gel monomers to include entrapment of org. mols. within the films. We also describe an extension of the method to titania thin films, which are obtained from titanium tetra-n-propoxide in alc. solns. by applying potentials in the range of +2.0 to -1.4 V to indium tin oxide electrodes. The film thickness (ranging between 20-1000 nm) is controllable by changing either the potential or the duration of its application. We demonstrate that this electrochem. method provides a convenient way for entrapment of org. dopants within the film. Four dyes were used for that purpose: Basic Blue 41, methylene-blue, tris(2,2'-bipyridine)iron(II) and tris(2,2'-bipyridine)ruthenium(II). [on SciFinder(R)]


CAPLUS AN 2004:962043(Journal)