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Two nanostructured polymers: Polyaniline nanofibers and new linear-dendritic matrix of poly(citric acid)-block-poly(ethylene glycol) copolymers for environmental monitoring in novel biosensors

Shamloo, A ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1080/00914037.2012.710861
  3. Publisher: 2013
  4. Abstract:
  5. In this work two phenol biosensors, one based on polyaniline nanofibers (PNFs) and the other based on the newly created and introduced linear-dendritic matrix of poly(citric acid)-block-poly(ethylene glycol) copolymers (PCA-PEG-PCA), were chemically modified with horseradish peroxidase (HRP) enzyme. These phenol biosensors showed an oxidation peak at 0.55 V. The amperometric response for biosensors based on PNFs showed a linear response range from 2.5 × 10-6 to 2.5 × 10-5 mol/L, with a detection limit of 2.5 M phenol. Also, the amperometric response for a biosensor based on PCA-PEG-PCA showed a linear response range from 2.5 × 10-6 to 4 × 10-5 mol/L, with a detection limit of 1.5 M phenol
  6. Keywords:
  7. Amperometric biosensor ; Horseradish peroxidase ; Phenol ; Poly(citric acid)-block-poly(ethylene glycol) copolymers ; Amperometric biosensors ; Amperometric response ; Chemically modified ; Detection limits ; Environmental Monitoring ; Horse-radish peroxidase ; Horseradish peroxidase enzymes ; Linear response range ; Nanostructured polymers ; Oxidation peak ; Polyaniline nanofibers ; Biosensors ; Citric acid ; Copolymers ; Dendrimers ; Matrix algebra ; Nanofibers ; Phenols ; Polyaniline ; Polyethylene oxides ; Polyethylene glycols
  8. Source: International Journal of Polymeric Materials and Polymeric Biomaterials ; Volume 62, Issue 7 , Jul , 2013 , Pages 377-383 ; 00914037 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/00914037.2012.710861#.VkLTJl65JIE