Preparation and Photoelectrical Characterization of Polyaniline Doped with Copper Phthalocyanine Tetrasulfonate

Authors

  • Stephen R. Cariño Institute of Chemistry, University of the Philippines Diliman, Quezon City
  • Ishmael S. Ordoñez Institute of Chemistry, University of the Philippines Diliman, Quezon City
  • Florentino C. Sumera Institute of Chemistry, University of the Philippines Diliman, Quezon City

DOI:

https://doi.org/10.26534/kimika.v13i2.63-69

Keywords:

polyaniline (PAni), copper pthalocyanine tetrasulfonate (CuPcTS), photoelectrochemical cell, photosensitizer dye, conducting polymer, electropolymerization

Abstract

The photoelectrochemistry of polyaniline (PAni), a conducting polymer, deposited on an indium-doped tin oxide (ITO) coated glass substrate was studied in an aqueous medium consisting of 2mM Fe(CN) 6^3-/4 in 1M KCl. On illumination of the polymer-modified electrode with white light, cathodic photocurrent densities greater than 20 µA/cm2 were detected. Doping of the conducting polymer with a dye, copper pthalocyanine tetrasulfonate (CuPcTS), doubled the photoelectrochemical response to about 40 µA/cm2 at applied potential of 0.0 V vs Ag/AgCI. The polymer was prepared by electropolymerization of aniline in 0.1 M H2SO4 via repeated cycling between 0.0 to 0.7 V vs. Ag/AgCl. Copper phthalocyanine tetrasulfonate (Na salt) was incorporated by polymerizing the aniline monomer in the presence of the dye. The conducting polymer-dye composite was characterized by IR, UV-Vis, SEM, and cyclic voltammetry.

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How to Cite

Cariño, S. R., Ordoñez, I. S., & Sumera, F. C. (1997). Preparation and Photoelectrical Characterization of Polyaniline Doped with Copper Phthalocyanine Tetrasulfonate. KIMIKA, 13(2), 63–69. https://doi.org/10.26534/kimika.v13i2.63-69

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Section

Research Articles