title: Poly-cobalt[tetrakis(o-aminophenyl)porphyrin] nanowire and single-walled carbon nanotube for the analysis of hydrogen peroxide.
abstract: Nanowires of poly-cobalt[tetrakis(o-aminophenyl)porphyrin] (PCoTAPPNW) were fabricated by electrochemical polymerization by the cyclic voltammetric method in anodic aluminum oxide membranes. A glassy carbon electrode (GCE) modified by PCoTAPPNW and single-walled carbon nanotubes (SWNT) without any binder was investigated with voltammetric methods in phosphate buffer saline (PBS) at pH 7.4. The PCoTAPPNW + SWNT/GCE exhibited strongly enhanced voltammetric and amperometric sensitivity towards hydrogen peroxide (H2O2), which shortened the response time (< 5 seconds), showed detection limit of 1.0 microM and enhanced the sensitivity for H2O2 detection with 194 microA mM(-1) cm(-2). The PCoTAPPNW + SWNT/GCE can be used to monitor H2O2 at very low concentration in physiological pH as an efficient electrochemical H2O2 sensor.
authors: Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju 500-757, Korea.
authors: Haesang
authors: H
authors: Jeong
authors: Mohammad Shamsuddin
authors: MS
authors: Ahmed
authors: Seungwon
authors: S
authors: Jeon
mesh_terms: D004202:Disinfectants / Q000032:analysis; D055664:Electrochemical Techniques; D006861:Hydrogen Peroxide / Q000032:analysis*; D006863:Hydrogen-Ion Concentration; D008665:Metalloporphyrins; D008855:Microscopy, Electron, Scanning; D036103:Nanotechnology; D037742:Nanotubes, Carbon / Q000648:ultrastructure; D053770:Nanowires / Q000737:chemistry / Q000648:ultrastructure; D010084:Oxidation-Reduction; D011108:Polymers; D011166:Porphyrins
chemical_list: D004202:Disinfectants; D008665:Metalloporphyrins; D037742:Nanotubes, Carbon; D011108:Polymers; D011166:Porphyrins; C059406:cobalt tetrakis(2-aminophenyl)porphyrin; D006861:Hydrogen Peroxide