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Electrodes modified with polyaminophenols: Immobilization of purines and pyrimidines
Author(s) -
Franco Diego L.,
Afonso André S.,
Ferreira Lucas F.,
Gonçalves Rafael A.,
Boodts Julien F.C.,
BritoMadurro Ana G.,
Madurro João M.
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21044
Subject(s) - cyclic voltammetry , materials science , dielectric spectroscopy , electrode , electrochemistry , polymer , differential pulse voltammetry , monomer , polyelectrolyte , conductive polymer , graphite , chemical engineering , polymer chemistry , inorganic chemistry , chemistry , composite material , engineering
This work describes the preparation of polymers potentiodynamically formed on surface of graphite electrode by anodic oxidation of 2, 3, or 4‐aminophenol monomers, as well as incorporation and detection of purine and pyrimidine bases on these modified electrodes. The electrochemical behavior of the formed films was studied by cyclic voltammetry and electrochemical impedance spectroscopy. These analyses indicate that poly‐4‐aminophenol presents the highest charge transfer rate. The surface morphology was studied by SEM and AFM. These analyses showed that the polymers present globular morphology. The immobilization and detection of purines and pyrimidines on graphite electrodes modified with poly‐aminophenols was studied by differential pulse voltammetry. It was possible to show, for the first time, that the oxidation of purine and pyrimidine bases and their mixtures takes place on modified electrodes covered with polymeric films. POLYM. ENG. SCI., 2008. © 2008 Society of Plastics Engineers