A bio-sensing platform utilizing a conjugated polymer, carbon nanotubes and PAMAM combination

Date

2017-08-15

Author

Buber, Ece
Kesik, Melis
Soylemez, Saniye
Toppare, Levent Kamil

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

216
views

0
downloads

In this study, amperometric biosensing performance of a novel platform utilizing a conducting polymer (CP), multi-walled carbon nanotubes (MWCNTs) and poly(amidoamine) (PAMAM) dendrimer was constructed. In order to fabricate the proposed biosensor, a graphite electrode was modified with poly[9,9-di-(2-ethylhexyl)-fluorenyl-2,7-diyl] end capped with N,N-bis(4-methylphenyl)-4-aniline (PFLA), MWCNTs and PAMAM, respectively. Then, GOx was immobilized onto the modified surface with the help of glutaraldehyde (GA) as the crosslinking reagent. Then, analytical and kinetic parameters of the constructed biosensor were investigated and the biosensor showed a linear response for glucose between 0.05 and 0.75 mM with a detection limit of 0.014 mM. K-M(app) and sensitivity values were calculated as 0.66 mM and 55.41 mu A mM(-1) cm(-2), respectively. To investigate the surface modifications, scanning electron microscopy (SEM) and cyclic voltammetry (CV) techniques were used. Finally, fabricated biosensor was tested on beverages for glucose detection successfully.

Subject Keywords

Analytical Chemistry, Electrochemistry, General Chemical Engineering

URI

https://hdl.handle.net/11511/43889

Journal

JOURNAL OF ELECTROANALYTICAL CHEMISTRY

DOI

https://doi.org/10.1016/j.jelechem.2017.06.043

Collections

Department of Chemistry, Article

Suggestions

OpenMETU
Core

A novel electrochromic and fluorescent polythienylpyrrole bearing 1,1 '-bipyrrole CİHANER, ATİLLA; Mert, Olcay; Demir, Ayhan Sıtkı (Elsevier BV, 2009-01-30) A novel conducting polymer was successfully synthesized via electropolymerization of 1-(1H-pyrrol-1-yl)-2,5-di(thiophen-2-yl)-1H-pyrrole. The electrochemical and electro-optical properties of the corresponding polymer, which was the first example of polymer containing 1,1'-bipyrrole units, were elaborated using electroanalytical and spectroscopic techniques. Cyclic voltammograms and electro-optical studies showed that the polymer has a stable and well-defined reversible redox process as well as electrochrom...
Synthesis and characterization of optical, electrochemical and photovoltaic properties of selenophene bearing benzodithiophene based alternating polymers Atli, Gulten Ozkul; Alemdar, Eda; Taşkaya Aslan, Sultan; Udum, Yasemin Arslan; Toppare, Levent Kamil; Çırpan, Ali (Elsevier BV, 2020-04-01) In this study two donor-acceptor type alternating polymers containing electron-deficient benzotriazole moiety and electron-rich selenophene bearing benzodithiophene moiety; P1 and P2, were designed and synthesized via Stille polymerization. Moreover, the effects of thiophene and selenophene as pi-bridges on optical, electrochemical and optoelectronic features of polymers were examined. The optical band gap values of P1 and P2 were found as 1.47 eV and 1.72 eV, respectively. Cyclic voltammetry studies were p...
A fast switching, low band gap, p- and n-dopable, donor-acceptor type polymer Günbaş, Emrullah Görkem; Akhmedov, Idris Mecidoglu; Tanyeli, Cihangir; Önal, Ahmet Muhtar; Toppare, Levent Kamil (Elsevier BV, 2008-04-01) A new electrochromic polymer, poly(2,3-diplienyl-5,7-bis(3,4-ethylenedioxy-2-thienyl)thieno[3,4-b]pyrazine) (PGS) is electrochemically synthesized and its electrochromic properties are reported. PGS showed well defined electrochemical characteristics with a relatively low oxidation potential of 0. 18 V vs Ag/Ag+. Polymer also exhibited a definite redox couple at applied cathodic potentials, indicating n-doping characteristic of the polymer. Spectroelectrochemistry and previously unattempted technique, ESR d...
A Diverse-Stimuli Responsive Chemiluminescent Probe with Luminol Scaffold and Its Electropolymerization Asil Alptekin, Demet; Algi, Fatih; Önal, Ahmet Muhtar (Wiley, 2010-10-01) A diverse-stimuli responsive chemiluminescent system, SNS-Lum, and its electropolymerization to give PSNS-Lum, which is the first example of conjugated polymers with pendant luminol arms inducing chemiluminescence in the presence of super oxide radical anion under neutral conditions, are highlighted.
Use of a thiophene-based conducting polymer in microbial biosensing ODACI DEMİRKOL, DİLEK; Kayahan, Senem; TİMUR, SUNA; Toppare, Levent Kamil (Elsevier BV, 2008-05-01) Immobilization of whole viable Pseudomonas fluorescens cells was achieved on a graphite electrode modified with a thiophene-based conducting polymer. Microbial electrodes were constructed by the entrapment of bacterial cells on conducting copolymer matrix using a dialysis membrane. The biosensor was characterized using glucose as the substrate. As well as analytical characterization, effects of electropolymerization time, pH and temperature on the sensor response were examined. Finally, operational stabilit...

Citation Formats

E. Buber, M. Kesik, S. Soylemez, and L. K. Toppare, “A bio-sensing platform utilizing a conjugated polymer, carbon nanotubes and PAMAM combination,” JOURNAL OF ELECTROANALYTICAL CHEMISTRY, pp. 370–376, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43889.