Layer-by-Layer Self-Assembled Ultrathin Multilayer Film of a Lanthanide Polyoxometalate and a Bipolar Ferrocenyl Derivative

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The electrostatic layer-by-layer self-assembled multilayer films were successfully prepared from alternating deposition of K13[Nd(SiW9Mo2O39)2]·25H2O and a bipolar ferrocenyl derivative (Fc) on quartz, optical glass and indium-tin-oxide coated glass substrates. The films were investigated by UV−visible and X-ray photoelectron spectroscopies (XPS), and cyclic voltammetry. The UV−vis spectra demonstrated that the deposition of the films was uniform and reproducible. XPS revealed that the film was of chemical composition of [Nd(SiW9Mo2O39)2]13-:Fc = 1:6. The dependence of cyclic voltammograms of the film on the potential scan rates showed a redox couple with a formal potential Ef (Ef = (Epa+Epc)/2) of 0.36 V which is similar to that (0.31 V) for Fc aqueous solution, and the redox reaction for the film was surface confined.

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Periodical:

Solid State Phenomena (Volumes 121-123)

Edited by:

Chunli BAI, Sishen XIE, Xing ZHU

Pages:

449-452

DOI:

10.4028/www.scientific.net/SSP.121-123.449

Citation:

Y.Q. Zhang et al., "Layer-by-Layer Self-Assembled Ultrathin Multilayer Film of a Lanthanide Polyoxometalate and a Bipolar Ferrocenyl Derivative", Solid State Phenomena, Vols. 121-123, pp. 449-452, 2007

Online since:

March 2007

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$35.00

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