A photoelectrochemical cell with oriented pigment-polymer complexes

D. Fraçkowiak, M. Romanowski, S. Hotchandani, L. LeBlanc, R. M. Leblanc, I. Gruda

Research output: Contribution to journalArticle

27 Scopus citations

Abstract

Photovoltaic effects and photocurrent generation in electrochemical cells consisting of a layer of oriented pigment-polymer complexes sandwiched between two semiconducting electrodes have been investigated. The complexes of chlorophyll a, chlorophyll b and stilbazolium merocyanines with polyvinyl alcohol have been used. The electric and optical properties of the cells have been established. The cells exhibit a potential difference which is changed under illumination. The phenomenon observed is explained supposing the formation of different junctions between the sample and each electrode. This difference is related to an asymmetric distribution of charge across the cell. Surface states related to Sno2 electrode decomposition are formed during aging of the cell. The cells investigated simulate to some extent biological membranes across which the redox components are distributed asymmetrically, enabling vectorial transfer of charge through the membrane.

Original languageEnglish (US)
Pages (from-to)371-387
Number of pages17
JournalBioelectrochemistry and Bioenergetics
Volume19
Issue number3
DOIs
StatePublished - Sep 1988

ASJC Scopus subject areas

  • Biophysics
  • Physical and Theoretical Chemistry
  • Electrochemistry

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