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

Abstract:

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.

• Periodical: Solid State Phenomena (Volumes 121-123)
• Pages: 449-452
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.121-123.449
• Online since: March 2007
• Authors: Y.Q. Zhang, L.H. Gao, K.Z. Wang, Y.L. Song, L. Jiang, D.B. Zhu
• Keywords: Ferrocence, Polyoxometalate, Self-Assembled Films

References

[1] G. Decher: Science Vol. 277 (1997) 1232.

[2] N.C. Greenham, S.C. Moratti, D.D.C. Bradeley, R.H. Friend and A.B. Holmes: Nature Vol. 365 (1993) 628.

[3] E.R. Kleinfeld and G.S. Ferguson: Science 265 (1994) 370 (d) J.H. Fendler and F.C. Meldrum: Adv. Mater. Vol. 7 (1995) 607.

[4] L. Cheng and J.A. Cox: Chem. Mater. Vol. 14 (2002) 6.

[5] G. Decher and J.D. Hong: Macromol. Chem. Macromol. Symp. Vol. 46 (1991) 321.

[6] H. Krass, G. Papastavrou and D. G. Kurth: Chem. Mater. Vol. 15 (2003) 196.

[7] A. Müller, E. Krickemeyer, H. Bogge, M. Schmidtmann and F. Peters: Angew. Chem., Int. Ed. Engl. Vol. 37 (1998) 3360.

[8] Chem. Rev. Vol. 98 (1998) is devoted to polyoxometalates.

[9] (a) Z.H. Chen, B. Liu and J.N. Yao: Photographic Sci. Photochem. (in Chinese) Vol. 18 (2000) 198 (b)Y.H. Wang, X.L. Wang and C.W. Hu: J. Colloid Interface Sci. 249 (2002) 307.

[10] I. Icghinose, H. Tagawa, S. Mizuki and Y. Lvov and T. Kunitake: Langmuir Vol. 14 (1998) 187.

[11] K.Z. Wang and L.H. Gao: Mater. Res. Bull. Vol. 37 (2002) 2447.

[12] L.Y. Wang, L.H. Gao and K.Z. Wang: Acta Chim. Sinica (in Chinese) Vol. 61 (2003) 1877.

[13] (a) Y.Q. Zhang, L.H. Gao, Z.M. Duan, K.Z. Wang, Y.L. Wang and H. J. Gao: Acta Chim. Sinica (in Chinese) Vol. 62 (2004) 738 (b) Y.Q. Zhang, K.Z. Wang and L.H. Gao: Colloids and Surfaces A: Physicochem. Eng. Aspects Vol 257-258C (2005) 391.

[14] (a)K.Z. Wang, C.H. Huang, G.X. Xu, X.S. Zhao, X.M. Xie, L.G. Xu and T.K. Li: Thin Solid Film Vol. 247 (1994) 1 (b) L.H. Gao, K.Z. Wang, C.H. Huang, X.S. Zhao, X.H. Xia, J.M. Xu and T.K. Li: Chem. Lett. (1995) 1049.

[15] Z.P. Zhu, J.F. Liu and B.L. Zhao: Chin. J. Inorg. Chem. (in Chinese) Vol. 7 (1991) 409.

[16] K.Z. wang: Doctoral Thesis, Peking University, Beijing, (1993).

[17] F. Caruso, D. G. Kurth, D. Volkmer, M. J. Koop and A. Müller: Langmuir Vol. 14 (1998) 3462.

[18] L. Xu, E.B. Wang, Z. Li, H.Y. Zhang and C. Qin: Chin. Chem. Lett. Vol. 12 (2001) 1127.

[19] T. Taniguchi, Y. Fukasawa and T. Miyashita: J. Phys. Chem. B. Vol. 102 (1999) (1920).

[20] M. Sadakane and E. Steckhan: Chem. Rev. Vol. 98 (1998) 219.

[21] L. Cheng and S. J. Dong: J. Electrochem. Soc. Vol. 147 (2000) 606.