Studies on ferrocene organothiol monolayer as an intermediate phase of potentiometric sensors with gold inner contact

Abstract Newly designed miniaturized potentiometric ion-selective sensors consisting of silicon-based transducers with Au contact, monolayers of redox-active organothiols and ion-selective polymeric membranes are presented. The purpose of incorporation of self-assembled monolayers is to improve sensors’ EMF stability. The influence of the chemical structure of intermediate layer on the electrochemical characteristics of sensors and the resistance to O 2 and CO 2 interferences of sensors is described.

[1]  N. F. Rooij,et al.  Optimization of the Composition of Interfaces in Miniature Planar Chloride Electrodes , 2003 .

[2]  M. Chudy,et al.  Novel head for testing and measurement of chemical microsensors , 2001 .

[3]  A. Ivaska,et al.  Influence of oxygen and carbon dioxide on the electrochemical stability of poly(3,4-ethylenedioxythiophene) used as ion-to-electron transducer in all-solid-state ion-selective electrodes , 2002 .

[4]  B. P. Nikolskii,et al.  Solid Contact in Membrane Ion-Selective Electrodes , 1985 .

[5]  Richard B. Brown,et al.  Enhancing EMF stability of solid-state ion-selective sensors by incorporating lipophilic silver-ligand complexes within polymeric films , 1996 .

[6]  Zbigniew Brzozka,et al.  Technological aspects of potentiometric BSC-type microsensor fabrication , 2001, Optoelectronic and Electronic Sensors.

[7]  D. Allara,et al.  Spontaneously organized molecular assemblies. 4. Structural characterization of n-alkyl thiol monolayers on gold by optical ellipsometry, infrared spectroscopy, and electrochemistry , 1987 .

[8]  E. Laviron.  General expression of the linear potential sweep voltammogram in the case of diffusionless electrochemical systems , 1979 .

[9]  F. Diederich,et al.  Redox-active self-assembled monolayers as novel solid contacts for ion-selective electrodes , 2000 .

[10]  Dermot Diamond,et al.  All-solid-state sodium-selective electrode based on a calixarene ionophore in a poly(vinyl chloride) membrane with a polypyrrole solid contact , 1992 .

[11]  P. Hauser,et al.  A potassium-ion selective electrode with valinomycin based poly(vinyl chloride) membrane and a poly(vinyl ferrocene) solid contact , 1995 .

[12]  Jiri Janata,et al.  Principles of Chemical Sensors , 1989 .

[13]  Johan Bobacka,et al.  Solution-cast films of poly(3,4-ethylenedioxythiophene) as ion-to-electron transducers in all-solid-state ion-selective electrodes , 2004 .

[14]  D. Pijanowska,et al.  Design of miniaturized nitrite sensors based on silicon structure with back-side contacts , 2002 .

[15]  R. E. Gyurcsányi,et al.  Microfabricated ISEs: critical comparison of inherently conducting polymer and hydrogel based inner contacts. , 2004, Talanta.

[16]  J. Bobacka,et al.  Potential Stability of All-Solid-State Ion-Selective Electrodes Using Conducting Polymers as Ion-to-Electron Transducers. , 1999, Analytical chemistry.

[17]  E. Hall,et al.  Ion-transport and diffusion coefficients of non-plasticised methacrylic-acrylic ion-selective membranes. , 2004, Talanta.

[18]  Ernö Pretsch,et al.  Redox-Active Self-Assembled Monolayers for Solid-Contact Polymeric Membrane Ion-Selective Electrodes , 2002 .

[19]  Y. Umezawa,et al.  Selectivity coefficients for ion-selective electrodes: Recommended methods for reporting KA,Bpot values (Technical Report) , 1995 .

[20]  Zbigniew Brzozka,et al.  Miniaturized sodium-selective sensors based on silicon back-side contact structure with novel self-plasticizing ion-selective membranes , 2003 .