Influence of morphology and topography on potentiometric response of magnesium and calcium sensitive PEDOT films doped with adenosine triphosphate (ATP)

B Paczosa-Bator, Jouko Peltonen, Johan Bobacka, Andrzej Lewenstam

Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

20 Citeringar (Scopus)

Sammanfattning

Poly(3,4-ethylenedioxythiophene) (PEDOT) films doped with adenosine triphosphate (ATP) are used to study the biologically relevant competitive magnesium and calcium ion-exchange at ATP membrane sites. It is shown, by atomic force microscopy (AFM) and scanning electron microscopy (SEM), that the surface topography and morphology of the PEDOT-ATP films determines the quality of their potentiometric response. More smooth and less rough films result in better potentiometric characteristics, particularly in a faster response. The topography/morphology of the PEDOT-ATP films is influenced by conditions during electrodeposition (electrochemical method of deposition, pH, concentration of electrolytes) and post-deposition soaking (including net-time of soaking), as evidenced by X-ray photoelectron spectroscopy (XPS) and energy dispersive analysis of X-rays (EDAX). (c) 2005 Elsevier B.V. All rights reserved.
OriginalspråkOdefinierat/okänt
Sidor (från-till)118–127
Antal sidor10
TidskriftAnalytica Chimica Acta
Volym555
Utgåva1
DOI
StatusPublicerad - 2006
MoE-publikationstypA1 Tidskriftsartikel-refererad

Nyckelord

  • membrane calcium and magnesium
  • ATP (adenosine triphosphate)
  • PEDOT (poly(3,4-ethylenedioxythiophene))
  • roughness analysis
  • Membrane potential

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