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

被引：20

作者：

Paczosa-Bator, B

Peltonen, J

Bobacka, J

Lewenstam, A ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, PL-30059 Krakow, Poland

[2] Abo Akad Univ, Dept Phys Chem, FIN-20500 Turku, Finland

[3] Abo Akad Univ, Proc Chem Ctr, Fac Chem Engn, Ctr Proc Analyt Chem & Sensor Technol ProSens, FIN-20500 Turku, Finland

来源：

ANALYTICA CHIMICA ACTA | 2006年 / 555卷 / 01期

关键词：

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

D O I：

10.1016/j.aca.2005.08.085

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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.

引用

页码：118 / 127

页数：10