Abstract
A β-4-(2-isopropyl-5-methylphenoxylphthalocyaninato)titanium(IV) oxide (TiOPc) was prepared and characterized by MS, 1H NMR, and elemental analysis. Cyclic voltammograms show that this TiOPc has two quasi-reversible reduction couples and two quasi-reversible to irreversible oxidations processes. The first reductions are two-electron processes, confirmed by spectroelectrochemistry to be due to TiIVPc2−/TiIIIPc3− redox processes. The second reductions are two-electron processes during which TiIIIPc3− was reduced to TiIIIPc5− species. Spectroelectrochemistry showed that oxidation occurs at the ring during the first oxidation. However, spectroelectrochemistry also showed that upon the second oxidation, the molecule decomposes. Chronocoulometry confirmed transfer of two electrons at the first and second reduction steps.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Wöhrle, D. and Meissner, D., Adv. Mater., 1991, vol. 3, p. 129. Eichhorn, H., J. Porphyrins Phthalocyanines, 2000, vol. 4, p. 88.
Wright, J.D., Prog. Surf. Sci., 1989, vol. 31, p. 1.
Nalwa, H.S., Shirk, J.S., Leznoff, C.C., and Lever, A.B.P., Phthalocyanines: Properties and Applications, New York: VCH, 1996, p. 79
Shirk, J.S., Pong, R.G.S., Flom, S.R., Heckmann, H., and Hanack, M., J. Phys. Chem., 2000, vol. 104, p. 1438.
Torre de la, G., Vazquez, P., Agullo-Lopez, F., and Torres, T., J. Mater. Chem., 1998, vol. 8, p. 1671.
Luk Centyanets, E.A., J. Porphyrins Phthalocyanines, 1999, vol. 3, p. 424.
Cook, M.J., J. Mater. Chem., 1996, vol. 6, p. 677.
Vagin, S. and Hanack, M., Eur. J. Org. Chem., 2003, vol. 2003, p. 2661.
Ban, K., Nishizawa, K., Ohtha, K., and Shirai, H., J. Mater. Chem., 2000, vol. 10, p. 1083.
Snow, A.W., Shirk, J.S., and Pong, R.G.S., J. Porphyr. Phthalocyanin., 2000, vol. 4, p. 518.
Kandaz, M. and Bekaroglu, O., J. Porphyr. Phthalocyanin., 1999, vol. 3, p. 339.
Bayir, Z.A., Hamuryudan, E., Gurek, A.G., and Bekaroglu, O., J. Porphyr. Phthalocyanin., 1997, vol. 1, p. 349.
Prudence Tau and Tebello Nyokong, Polyhedron., 2006, vol. 25, p. 1802.
Chunyu Ma, Kaiqi Ye, and Guotong Du, Dyes Pigments., 2007, vol. 74, p. 141.
Sommerauer, M., Rager, C., and Hanack, M., J. Am. Chem. Soc., 1996, vol. 118, p. 10085.
Rager, C., Schmid, G., and Hanack, M., Chem. Eur. J., 1999, vol. 5, p. 280.
Görlach, B., Hellriege, Ch., Steinbrecher, S., Yüksel, H., Albert, K., Plies, E., and Hanack, M., J. Mater. Chem., 2001, vol. 11, p. 3317.
Albert, K. and Hanack, M., Chem. Eur. J., 2001, vol. 7, p. 2459.
Hanack, M. and Sommerauer, M., Angew. Chem. Int. Ed. Engl., 1993, vol. 32, p. 1422.
Stillman, M.J., Nyokong, T., Leznoff, C.C., and Lever, A.B.P., Phthalocyanines: Properties and Applications, Eds., New York: VCH, 1989, vol. 1, chapter 3.
Stillman, M.J., Leznoff, C.C., and Lever, A.B.P., Phthalocyanines: Properties and Applications, vol. 3, Eds., New York: VCH, 1993, chapter 5.
Author information
Authors and Affiliations
Corresponding author
Additional information
Published in Elektrokhimiya in Russian, 2008, Vol. 44, No. 12, pp. 1466–1472.
The text was submitted by author in English.
Rights and permissions
About this article
Cite this article
He, W., Ma, C., Chen, C. et al. Synthesis and electrochemical characterization of β-tetra-(2-isopropyl-5-methylphenoxylphthalocyaninato)titanium(IV) Oxide. Russ J Electrochem 44, 1366–1372 (2008). https://doi.org/10.1134/S1023193508120094
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1023193508120094