1 Ocak 2017 Dergi makalesi Açık Erişim

Karazehir, T.; Gokce, Z. Guler; Ates, M.; Sarac, A. S.

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  <identifier identifierType="URL">https://aperta.ulakbim.gov.tr/record/49363</identifier>
  <creators>
    <creator>
      <creatorName>Karazehir, T.</creatorName>
      <givenName>T.</givenName>
      <familyName>Karazehir</familyName>
    </creator>
    <creator>
      <creatorName>Gokce, Z. Guler</creatorName>
      <givenName>Z. Guler</givenName>
      <familyName>Gokce</familyName>
      <affiliation>Istanbul Tech Univ, Nanosci &amp; Nanoengn, TR-34469 Istanbul, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Ates, M.</creatorName>
      <givenName>M.</givenName>
      <familyName>Ates</familyName>
      <affiliation>Namik Kemal Univ, Fac Arts &amp; Sci, Dept Chem, Degirmenalti Campus, TR-59030 Tekirdag, Turkey</affiliation>
    </creator>
    <creator>
      <creatorName>Sarac, A. S.</creatorName>
      <givenName>A. S.</givenName>
      <familyName>Sarac</familyName>
    </creator>
  </creators>
  <titles>
    <title>Gold Nanoparticle/Nickel Oxide/Poly(Pyrrole-N-Propionic Acid) Hybrid Multilayer Film: Electrochemical Study And Its Application In Biosensing</title>
  </titles>
  <publisher>Aperta</publisher>
  <publicationYear>2017</publicationYear>
  <dates>
    <date dateType="Issued">2017-01-01</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://aperta.ulakbim.gov.tr/record/49363</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.3144/expresspolymlett.2017.43</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://www.opendefinition.org/licenses/cc-by">Creative Commons Attribution</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">The present study describes the fabrication of Indium Tin Oxide /gold nanoparticles/nickel oxide/poly(PyrroleN-propionic acid) (ITO/GNPs/NiO/poly(PPA)) multilayered film, and its modification with Tyrosinase (Ty). The ITO/GNPs/ NiO/poly(PPA) electrode was fabricated by sequential electrochemical assembly onto ITO substrate which electrochemical deposition provides a facile, inexpensive technique for synthesis of multilayered film within the adherent morphology with controllable film thickness. Cyclic voltammetry (CV), Fourier transform infrared spectroscopy-attenuated total reflectance (FTIR-ATR), scanning electron microcopy (SEM), and atomic force microcopy (AFM) were used to characterize the film assembly processes. The properties of a semiconductor/electrolyte interface were investigated based on the Mott-Schottky (M-S) approach for the modified electrodes, with the flat band potential (E-FB) according to the potential intercept and the carrier density (N-D) according to the linear slopes. The N-D and EFB of ITO/GNPs/NiO/poly(PPA) were obtained as 2.48 . 1021 cm(-3) and 0.26 V, respectively. Tyrosinase was immobilized using carbodiimide coupling reaction. The bioelectrode was characterized by FTIR-ATR, SEM, AFM, electrochemical impedance spectroscopy (EIS). A Randles equivalent circuit was introduced for modeling the performance of impedimetric biosensing for the detection of the dopamine (DP) and the interface of bioelectrode/electrolyte. The EIS of the ITO/GNPs/NiO/poly(PPA)-Ty exhibited significant changes in the charge transfer resistance (R-CT) value toward the detection of dopamine over a linear range of 80 mu M to 0.2 mM with a limit of detection (LOD) of 5.46 mu M.</description>
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