Syntheses of fully sulfonated polyaniline nano-networks and its application to the direct electrochemistry of cytochrome c
Data(s) |
2006
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Resumo |
Fully sulfonated polyaniline nano-particles, nano-fibrils and nano-networks have been achieved for the first time by electrochemical homopolymerization of orthanilic acid using a three-step electrochemical deposition procedure in a mixed solvent of acetonitrile (ACN) and water. The diameter of the uniform nano-particles is about 60nm, and the nano-fibrils can be organized in two-dimensional (21)) or three-dimensional (313) non-periodic networks with good electrical contact. Average distance between contacts is about 850 and 600 nm for a 2D and 3D system, respectively. The details of the poly(orthanilic acid) (POA) nano-structure were examined with a field emission scanning electron microscope (SEM). The structure and properties of POA were characterized with FTIR, UV-vis and electrochemical methods. The 3D POA nano-networks coated platinum electrode gave a direct electrochemical behavior of horse heart cytochrome c (Cyt c) immobilized on this electrode surface, a pair of well-defined redox waves with formal potential (E-ol) of -0.032 V (versus Ag/AgCl) was achieved. The interaction between Cyt c and POA makes the formal potential shift negatively compared to that of Cyt c in solution. Spectrophotometric and electrochemical methods were used to investigate the interaction of Cyt c with POA. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Zhang L;Jiang X;Niu L;Dong SJ.Syntheses of fully sulfonated polyaniline nano-networks and its application to the direct electrochemistry of cytochrome c,BIOSENSORS & BIOELECTRONICS,2006,21(7):1107-1115 |
Palavras-Chave | #FERRICYTOCHROME-C #DOPED POLYANILINE #GOLD ELECTRODES #HORSE #ACID #PROTEINS #ANILINE #GROWTH #POLYMERIZATION #REDUCTION |
Tipo |
期刊论文 |