Flow injection determination of catechol based on polypyrrole–carbon nanotube–tyrosinase biocomposite detector

Ozoner, Seyda Korkut; Yalvac, Mevra; Erhan, Elif

doi:10.1016/j.cap.2009.06.017

Cited by 51 publications

(23 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…3B), which might be ascribed to the enhanced electron transfer of the enzymatic reaction shown in Eqs. (1) and (2) in the presence of nano-HA [36][37][38]. The observed reduction peak was attributed to the direct reduction of quinone liberated from the enzyme- catalyzed reaction on the electrode surface.…”

Section: Electrochemical Sensing Capability Of Nano-ha/chitosan Nanobmentioning

confidence: 85%

A novel tyrosinase biosensor based on hydroxyapatite–chitosan nanocomposite for the detection of phenolic compounds

Zhang

et al. 2010

Analytica Chimica Acta

116

View full text Add to dashboard Cite

Section: Electrochemical Sensing Capability Of Nano-ha/chitosan Nanobmentioning

confidence: 85%

A novel tyrosinase biosensor based on hydroxyapatite–chitosan nanocomposite for the detection of phenolic compounds

Zhang

et al. 2010

Analytica Chimica Acta

116

View full text Add to dashboard Cite

“…Neither electrode A nor B gave any response to p-benzoquinone, hydroquinone, 2-chlorophenol, 3-chlorophenol, 4-chlorophenol, 2-aminophenol, guaiacol, o-cresol, p-cresol, 4-acetamidophenol, and pyrogallol; thus, tyrosinase shows high specificity to a limited number of phenolics. 52,53 As the enzyme was chemically bonded to the electrode A via epoxy groups and cross-linked with PGA, the selectivity of tyrosinase might be preserved by means of its chemical stabilization of the enzyme in the electrode A. Meanwhile, the hindrance effect would be higher for electrode A than for electrode B since the enzyme in electrode A was fixed into the polymeric composite film through chemical bonding and existing cross-links instead of entrapment of the enzyme in the P(MTM 85 -co-VFc 15 )/PPy film.…”

Section: Responses Of Electrode a And Electrode B To Various Phenolicsmentioning

confidence: 98%

Vinylferrocene copolymers based biosensors for phenol derivatives

Dursun

Ozoner

Demirci

et al. 2011

J of Chemical Tech & Biotech

Self Cite

View full text Add to dashboard Cite

“…A high sensitivity towards glutamate, a detection limit lower than 0.3 μ M, low interference from endogenous interferences, fast response time (less than 8 s), and reasonable stability (30 days) was obtained. PPy was also employed by Ozoner et al [47] to prepare a highly sensitive nanostructured surface obtained by electropolymerizing pyrrole monomers in the presence of MWNTs and tyrosinase on GC electrodes. The biosensor was tested for catechol detection and also in this case, in comparison with non -nanostructured fi lms, the presence of CNTs enhanced the electron transfer between electrode and enzyme, allowing a detection limit of 0.671 μ M, a linear range between 3 and 50 μ M, a short response time (10 s), and long -term stability.…”

Section: Carbon Nanotubes Used In Catalytic Biosensorsmentioning

confidence: 99%

New Micro‐ and Nanotechnologies for Electrochemical Biosensor Development

Berti

Turner

2011

Biosensor Nanomaterials

View full text Add to dashboard Cite

IntroductionOver the last decade, great attention has been paid to the inclusion of newly developed nanomaterials such as nanowires, nanotubes, and nanocrystals in sensor devices. This can be attributed to the ability to tailor the size and structure, and hence the properties of nanomaterials, thus opening up excellent prospects for designing novel sensing systems and enhancing the performance of bioanalytical assays [1] . Considering that most biological systems, including viruses, membranes, and protein complexes, are naturally nanostructured materials and that molecular interactions take place on a nanometer scale, nanomaterials are intuitive candidates for integration into biomedical and bioanalytical devices [2, 3] . Moreover, they can pave the way for the miniaturization of sensors and devices with nanometer dimensions (nanosensors and nanobiosensors) in order to obtain better sensitivity, specifi city, and faster rates of recognition compared to current solutions.The chemical, electronic, and optical properties of nanomaterials generally depend on both their dimensions and their morphology [4] . A wide variety of nanostructures have been reported in the literature for interesting analytical applications. Among these, organic and inorganic nanotubes, nanoparticles, and metal oxide nanowires have provided promising building blocks for the realization of nanoscale electrochemical biosensors due to their biocompatibility and technologically important combination of properties, such as high surface area, good electrical properties, and chemical stability. Moreover, the integration of nanomaterials in electrochemical devices offers the possibility of realizing portable, easy -to -use, and inexpensive sensors, due to the ease of miniaturization of both the material and the transduction system. Over the last decade, this fi eld has been extensively investigated and a huge number of papers have been published. This chapter principally summarizes progress made in the last few years (2005 to date) in the integration of nanomaterials such as carbon nanotubes (CNTs), nanoparticles, and polymer nanostructures in electrochemical biosensing systems.

show abstract

Flow injection determination of catechol based on polypyrrole–carbon nanotube–tyrosinase biocomposite detector

Cited by 51 publications

References 38 publications

A novel tyrosinase biosensor based on hydroxyapatite–chitosan nanocomposite for the detection of phenolic compounds

A novel tyrosinase biosensor based on hydroxyapatite–chitosan nanocomposite for the detection of phenolic compounds

Vinylferrocene copolymers based biosensors for phenol derivatives

New Micro‐ and Nanotechnologies for Electrochemical Biosensor Development

Contact Info

Product

Resources

About