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

A1 Journal article (refereed)


Internal Authors/Editors


Publication Details

List of Authors: Paczosa-Bator B, Peltonen J, Bobacka J, Lewenstam A
Publisher: ELSEVIER SCIENCE BV
Publication year: 2006
Journal: Analytica Chimica Acta
Journal acronym: ANAL CHIM ACTA
Volume number: 555
Issue number: 1
Start page: 118
End page: 127
Number of pages: 10
ISSN: 0003-2670


Abstract

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.


Keywords

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

Last updated on 2019-16-12 at 03:05