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PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media

Over the last few decades, electrochemical transducers based on conductive polymers have received considerable attention owing to their physical and chemical characteristics with a potential to enhance the performance of an electrochemical biosensor in liquid media. Simultaneous electropolymerizatio...

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Main Authors: Benoudjit, Abdel Mohsen, Abdul Guthoos, Habibah Farhana, Arris, Farrah Aida, Wan Salim, Wan Wardatul Amani
Format: Conference or Workshop Item
Language:English
Published: IIUM 2016
Subjects:
T Technology (General)
TA164 Bioengineering
Online Access:http://irep.iium.edu.my/52700/7/52700.pdf
http://irep.iium.edu.my/52700/
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spelling my.iium.irep.527002017-10-17T03:16:02Z http://irep.iium.edu.my/52700/ PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media Benoudjit, Abdel Mohsen Abdul Guthoos, Habibah Farhana Arris, Farrah Aida Wan Salim, Wan Wardatul Amani T Technology (General) TA164 Bioengineering Over the last few decades, electrochemical transducers based on conductive polymers have received considerable attention owing to their physical and chemical characteristics with a potential to enhance the performance of an electrochemical biosensor in liquid media. Simultaneous electropolymerization and deposition of 3,4-ethylenedioxythiophene and poly(styrene sulfonate) (EDOT and PSS) on a microplatinum electrode (μPtE) surface was performed. The surface area of the electrode was varied by changing the length: 10 mm and 5 mm with a fixed diameter of 50 μm. Electropolymerization of EDOT:PSS to poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) was conducted using galvanostatic mode in a potentiostat/galvanostat at 100 μA and 400 mV. The electrochemical measurements were performed in 0.1 M potassium ferrocyanide (K3Fe(CN)6) solution. Redox currents over 6 days were measured in terms of anodic peak current using cyclic voltammetry (CV). Field emission scanning electron microscope (FESEM) results revealed the effect of liquid media on PEDOT:PSS film deposited on a higher surface area before and after measurement. Although anodic peak current did not change significantly for electrode lengths of 10 mm and 5 mm (~0.20 mA) on day one, the stability of current measurements (anodic peak current at day six in comparison to day one) decreased by 20% and 85% for 10 and 5 mm electrode lengths, respectively. This study has found that PEDOT:PSS deposited on a 5-mm microplatinum electrode with non-uniform films lost measurement stability in terms of anodic peak current after one week. However, a 10-mm microplatinum electrode with better film uniformity was able to maintain measurement stability for 2 weeks. The results enable development of PEDOT:PSS as a transducer layer deposited on microplatinum wire with a micrometer (μm) diameter for producing a robust electrochemical biosensor for applications in liquid media. IIUM 2016 Conference or Workshop Item REM application/pdf en http://irep.iium.edu.my/52700/7/52700.pdf Benoudjit, Abdel Mohsen and Abdul Guthoos, Habibah Farhana and Arris, Farrah Aida and Wan Salim, Wan Wardatul Amani (2016) PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media. In: 4th International Conference on Biotechnology Engineering 2016 (ICBioE 2016), 25th-27th July 2016, Kuala Lumpur.
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
topic T Technology (General)
TA164 Bioengineering
spellingShingle T Technology (General)
TA164 Bioengineering
Benoudjit, Abdel Mohsen
Abdul Guthoos, Habibah Farhana
Arris, Farrah Aida
Wan Salim, Wan Wardatul Amani
PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
description Over the last few decades, electrochemical transducers based on conductive polymers have received considerable attention owing to their physical and chemical characteristics with a potential to enhance the performance of an electrochemical biosensor in liquid media. Simultaneous electropolymerization and deposition of 3,4-ethylenedioxythiophene and poly(styrene sulfonate) (EDOT and PSS) on a microplatinum electrode (μPtE) surface was performed. The surface area of the electrode was varied by changing the length: 10 mm and 5 mm with a fixed diameter of 50 μm. Electropolymerization of EDOT:PSS to poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) was conducted using galvanostatic mode in a potentiostat/galvanostat at 100 μA and 400 mV. The electrochemical measurements were performed in 0.1 M potassium ferrocyanide (K3Fe(CN)6) solution. Redox currents over 6 days were measured in terms of anodic peak current using cyclic voltammetry (CV). Field emission scanning electron microscope (FESEM) results revealed the effect of liquid media on PEDOT:PSS film deposited on a higher surface area before and after measurement. Although anodic peak current did not change significantly for electrode lengths of 10 mm and 5 mm (~0.20 mA) on day one, the stability of current measurements (anodic peak current at day six in comparison to day one) decreased by 20% and 85% for 10 and 5 mm electrode lengths, respectively. This study has found that PEDOT:PSS deposited on a 5-mm microplatinum electrode with non-uniform films lost measurement stability in terms of anodic peak current after one week. However, a 10-mm microplatinum electrode with better film uniformity was able to maintain measurement stability for 2 weeks. The results enable development of PEDOT:PSS as a transducer layer deposited on microplatinum wire with a micrometer (μm) diameter for producing a robust electrochemical biosensor for applications in liquid media.
format Conference or Workshop Item
author Benoudjit, Abdel Mohsen
Abdul Guthoos, Habibah Farhana
Arris, Farrah Aida
Wan Salim, Wan Wardatul Amani
author_facet Benoudjit, Abdel Mohsen
Abdul Guthoos, Habibah Farhana
Arris, Farrah Aida
Wan Salim, Wan Wardatul Amani
author_sort Benoudjit, Abdel Mohsen
title PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
title_short PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
title_full PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
title_fullStr PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
title_full_unstemmed PEDOT: PSS composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
title_sort pedot: pss composite deposited on a microplatinum electrode as a robust biosensor transducer for applications in liquid media
publisher IIUM
publishDate 2016
url http://irep.iium.edu.my/52700/7/52700.pdf
http://irep.iium.edu.my/52700/
_version_ 1643614214600785920
score 13.211869

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