Ion-selective Electrodes with 3D Nanostructured Conducting Polymer Solid Contact

Júlia Szucs, Tom Lindfors, Johan Bobacka, R. Gyurcsányi

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

Until now both ion-to-electron transducers as well as large surface area nanostructured conducting materials were successfully used as solid contacts for polymer-based ion-selective electrodes. We were interested to explore the combination of these two approaches by fabricating ordered electrically conducting polymer (ECP) nanostructures using 3D nanosphere lithography and electrosynthesis to provide a high surface area and capacitive interface for solid contact ion-selective electrodes (SC-ISEs). For these studies we used poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT(PSS)) films with 750nm diameter interconnected pores as the intermediate layer between a glassy carbon electrode and a Ag+ -selective polymeric membrane. We also investigated the feasibility of loading the voids created in the polymer film with a lipophilic redox mediator (1,1'-dimethylferrocene) to provide the respective ISEs with well-defined/controllable E0 values. These expectations were fulfilled as the standard deviation of E0 values were reduced with almost an order of magnitude for 3D nanostructured SC-ISEs filled with the redox mediator as compared to their redox mediator-free analogs. The detrimental effect of the redox mediator extraction into the plasticized PVC-based ion-selective membrane (ISM) was efficiently suppressed by replacing the PVC-based ISMs with a low diffusivity silicone rubber matrix.

Original languageEnglish
JournalElectroanalysis
DOIs
Publication statusAccepted/In press - 2015

Fingerprint

Conducting polymers
Polyvinyl Chloride
Polyvinyl chlorides
Ion selective membranes
Polymeric membranes
Silicone Elastomers
Nanospheres
Glassy carbon
Polymer films
Silicones
Lithography
Transducers
Nanostructures
Rubber
Polymers
Ions
Electrodes
Ion-Selective Electrodes
Oxidation-Reduction
Electrons

Keywords

  • Conducting polymers
  • Lipophilic redox couple
  • Nanosphere lithography
  • PEDOT(PSS)
  • Solid contact ion-selective electrodes

ASJC Scopus subject areas

  • Analytical Chemistry
  • Electrochemistry

Cite this

Ion-selective Electrodes with 3D Nanostructured Conducting Polymer Solid Contact. / Szucs, Júlia; Lindfors, Tom; Bobacka, Johan; Gyurcsányi, R.

In: Electroanalysis, 2015.

Research output: Contribution to journalArticle

@article{1f1b302acec04082bb5e030a3c8b7a0a,
title = "Ion-selective Electrodes with 3D Nanostructured Conducting Polymer Solid Contact",
abstract = "Until now both ion-to-electron transducers as well as large surface area nanostructured conducting materials were successfully used as solid contacts for polymer-based ion-selective electrodes. We were interested to explore the combination of these two approaches by fabricating ordered electrically conducting polymer (ECP) nanostructures using 3D nanosphere lithography and electrosynthesis to provide a high surface area and capacitive interface for solid contact ion-selective electrodes (SC-ISEs). For these studies we used poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT(PSS)) films with 750nm diameter interconnected pores as the intermediate layer between a glassy carbon electrode and a Ag+ -selective polymeric membrane. We also investigated the feasibility of loading the voids created in the polymer film with a lipophilic redox mediator (1,1'-dimethylferrocene) to provide the respective ISEs with well-defined/controllable E0 values. These expectations were fulfilled as the standard deviation of E0 values were reduced with almost an order of magnitude for 3D nanostructured SC-ISEs filled with the redox mediator as compared to their redox mediator-free analogs. The detrimental effect of the redox mediator extraction into the plasticized PVC-based ion-selective membrane (ISM) was efficiently suppressed by replacing the PVC-based ISMs with a low diffusivity silicone rubber matrix.",
keywords = "Conducting polymers, Lipophilic redox couple, Nanosphere lithography, PEDOT(PSS), Solid contact ion-selective electrodes",
author = "J{\'u}lia Szucs and Tom Lindfors and Johan Bobacka and R. Gyurcs{\'a}nyi",
year = "2015",
doi = "10.1002/elan.201500465",
language = "English",
journal = "Electroanalysis",
issn = "1040-0397",
publisher = "Wiley-VCH Verlag",

}

TY - JOUR

T1 - Ion-selective Electrodes with 3D Nanostructured Conducting Polymer Solid Contact

AU - Szucs, Júlia

AU - Lindfors, Tom

AU - Bobacka, Johan

AU - Gyurcsányi, R.

PY - 2015

Y1 - 2015

N2 - Until now both ion-to-electron transducers as well as large surface area nanostructured conducting materials were successfully used as solid contacts for polymer-based ion-selective electrodes. We were interested to explore the combination of these two approaches by fabricating ordered electrically conducting polymer (ECP) nanostructures using 3D nanosphere lithography and electrosynthesis to provide a high surface area and capacitive interface for solid contact ion-selective electrodes (SC-ISEs). For these studies we used poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT(PSS)) films with 750nm diameter interconnected pores as the intermediate layer between a glassy carbon electrode and a Ag+ -selective polymeric membrane. We also investigated the feasibility of loading the voids created in the polymer film with a lipophilic redox mediator (1,1'-dimethylferrocene) to provide the respective ISEs with well-defined/controllable E0 values. These expectations were fulfilled as the standard deviation of E0 values were reduced with almost an order of magnitude for 3D nanostructured SC-ISEs filled with the redox mediator as compared to their redox mediator-free analogs. The detrimental effect of the redox mediator extraction into the plasticized PVC-based ion-selective membrane (ISM) was efficiently suppressed by replacing the PVC-based ISMs with a low diffusivity silicone rubber matrix.

AB - Until now both ion-to-electron transducers as well as large surface area nanostructured conducting materials were successfully used as solid contacts for polymer-based ion-selective electrodes. We were interested to explore the combination of these two approaches by fabricating ordered electrically conducting polymer (ECP) nanostructures using 3D nanosphere lithography and electrosynthesis to provide a high surface area and capacitive interface for solid contact ion-selective electrodes (SC-ISEs). For these studies we used poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT(PSS)) films with 750nm diameter interconnected pores as the intermediate layer between a glassy carbon electrode and a Ag+ -selective polymeric membrane. We also investigated the feasibility of loading the voids created in the polymer film with a lipophilic redox mediator (1,1'-dimethylferrocene) to provide the respective ISEs with well-defined/controllable E0 values. These expectations were fulfilled as the standard deviation of E0 values were reduced with almost an order of magnitude for 3D nanostructured SC-ISEs filled with the redox mediator as compared to their redox mediator-free analogs. The detrimental effect of the redox mediator extraction into the plasticized PVC-based ion-selective membrane (ISM) was efficiently suppressed by replacing the PVC-based ISMs with a low diffusivity silicone rubber matrix.

KW - Conducting polymers

KW - Lipophilic redox couple

KW - Nanosphere lithography

KW - PEDOT(PSS)

KW - Solid contact ion-selective electrodes

UR - http://www.scopus.com/inward/record.url?scp=84949254593&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84949254593&partnerID=8YFLogxK

U2 - 10.1002/elan.201500465

DO - 10.1002/elan.201500465

M3 - Article

JO - Electroanalysis

JF - Electroanalysis

SN - 1040-0397

ER -