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

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)


Interna författare/redaktörer


Publikationens författare: Paczosa-Bator B, Peltonen J, Bobacka J, Lewenstam A
Förläggare: ELSEVIER SCIENCE BV
Publiceringsår: 2006
Tidskrift: Analytica Chimica Acta
Tidskriftsakronym: ANAL CHIM ACTA
Volym: 555
Nummer: 1
Artikelns första sida, sidnummer: 118
Artikelns sista sida, sidnummer: 127
Antal sidor: 10
ISSN: 0003-2670


Abstrakt

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.


Nyckelord

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

Senast uppdaterad 2020-26-02 vid 03:52