Poly(pyrrole) versus poly(3,4-ethylenedioxythiophene): amperometric cholesterol biosensor matrices

Türkarslan, Özlem; Kayahan, Senem Kiralp; Toppare, Levent

doi:10.1007/s10008-008-0590-7

Cited by 19 publications

(7 citation statements)

References 37 publications

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“…The detection limit was lower than that of previously reported electrochemical cholesterol biosensors [23 -26]. The apparent Michaelis -Menten constant (K m ) value of the cholesterol biosensor was determined to be 0.3 mM, which was smaller than other reported cholesterol biosensors [12,23,26], indicating the higher sensitivity of the proposed biosensor to cholesterol.…”

Section: Short Communicationcontrasting

confidence: 57%

Direct Electrochemistry of Cholesterol Oxidase Immobilized on a Conducting Polymer: Application for a Cholesterol Biosensor

2009

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Direct electrochemistry of cholesterol oxidase (ChOx) immobilized on the conductive poly-3',4'-diamine-2,2',5',2''-terthiophene (PDATT) was achieved and used to create a cholesterol biosensor. A well-defined redox peak was observed, corresponding to the direct electron transfer of the FAD/FADH 2 of ChOx, and the rate constant (k s ) was determined to be 0.75 s À1. Glutathione (GSH) covalently bonded with PDATT was used as a matrix for conjugating AuNPs, ChOx, and MP, simultaneously. MP co-immobilized with ChOx on the AuNPs-GSH/PDATT exhibited an excellent amperometric response to cholesterol. The dynamic range was from 10 to 130 mM with a detection limit of 0.3 AE 0.04 mM.

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Section: Short Communicationcontrasting

confidence: 57%

Direct Electrochemistry of Cholesterol Oxidase Immobilized on a Conducting Polymer: Application for a Cholesterol Biosensor

2009

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“…Furthermore PEDOT displays high stability with aqueous electrolytes 23. This high electrochemical stability, owing to inherent dioxyethylene bridging groups, makes PEDOT well suited for enzyme immobilization matrixes as reported for use in glucose25 and cholesterol26 amperometric biosensing applications.…”

Section: Introductionmentioning

confidence: 99%

Nanostructuring Platinum Nanoparticles on Multilayered Graphene Petal Nanosheets for Electrochemical Biosensing

Claussen

Kumar

Jaroch³

et al. 2012

Adv Funct Materials

218

152

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Hybridization of nanoscale metals and carbon nanotubes into composite nanomaterials has produced some of the best-performing sensors to date. The challenge remains to develop scalable nanofabrication methods that are amenable to the development of sensors with broad sensing ranges. A scalable nanostructured biosensor based on multilayered graphene petal nanosheets (MGPNs), Pt nanoparticles, and a biorecognition element (glucose oxidase) is presented. The combination of zero-dimensional nanoparticles on a two-dimensional support that is arrayed in the third dimension creates a sensor platform with exceptional characteristics. The versatility of the biosensor platform is demonstrated by altering biosensor performance (i.e., sensitivity, detection limit, and linear sensing range) through changing the size, density, and morphology of electrodeposited Pt nanoparticles on the MGPNs. This work enables a robust sensor design that demonstrates exceptional performance with enhanced glucose sensitivity (0.3 µ M detection limit, 0.01-50 m M linear sensing range), a long stable shelf-life ( > 1 month), and a high selectivity over electroactive, interfering species commonly found in human serum samples.

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“…5 The exposed carboxy moieties of the new COOH-PPy/metal tubular motors can facilitate covalent attachment of the antibodies. Even though EDOT derivatives have enhanced electrochemical stability and ordered structure, compared to those based on PPy, 15 the new microtubular structures have similar morphological and structural properties as earlier PEDOT-based micromotors. 8 The Py-COOH monomer thus represents a useful alternative for fabricating tubular micromotors containing carboxy moieties.…”

Section: Resultsmentioning

confidence: 92%

Micromotors to capture and destroy anthrax simulant spores

Orozco

Pan

Sattayasamitsathit

et al. 2015

Analyst

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Towards addressing the need for detecting and eliminating biothreats, we describe a micromotor-based approach for screening, capturing, isolating and destroying anthrax simulant spores in a simple and rapid manner with minimal sample processing. The B. globilli antibody-functionalized micromotors can recognize, capture and transport B. globigii spores in environmental matrices, while showing non-interactions with excess of non-target bacteria. Efficient destruction of the anthrax simulant spores is demonstrated via the micromotor-induced mixing of a mild oxidizing solution. The new micromotor-based approach paves a way to dynamic multifunctional systems that rapidly recognize, isolate, capture and destroy biological threats.

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Poly(pyrrole) versus poly(3,4-ethylenedioxythiophene): amperometric cholesterol biosensor matrices

Cited by 19 publications

References 37 publications

Direct Electrochemistry of Cholesterol Oxidase Immobilized on a Conducting Polymer: Application for a Cholesterol Biosensor

Direct Electrochemistry of Cholesterol Oxidase Immobilized on a Conducting Polymer: Application for a Cholesterol Biosensor

Nanostructuring Platinum Nanoparticles on Multilayered Graphene Petal Nanosheets for Electrochemical Biosensing

Micromotors to capture and destroy anthrax simulant spores

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