Enzymatically synthesized polyaniline film deposition studied by simultaneous open circuit potential and electrochemical quartz crystal microbalance measurements
Por:
Carrillo N., León-Silva U., Avalos T., Nicho M.E., Serna S., Castillon F., Farias M., Cruz-Silva R.
Publicada:
1 mar 2012
Resumen:
The chemical and enzymatic deposition of polyaniline (PANI) films by in situ polymerization was studied and the resulting films were characterized. The film formation and polymerization processes were simultaneously monitored by the evolution of the open circuit potential and quartz-crystal microbalance measurements. Different substrates, such as Indium-Tin oxide electrodes and gold-coated quartz-crystal electrodes were used as substrates for PANI deposition. Electroactive PANI films were successfully deposited by in situ enzymatic polymerization at low oxidation potential. The electrogravimetric response of the enzymatically deposited PANI film was studied by cyclic voltammetry in monomer-free acidic medium. The morphology of the films was observed by scanning electron microscopy, revealing a granular structure in enzymatically deposited PANI. The PANI films were also characterized by thermogravimetric analysis, electrochemical impedance spectroscopy, and X-ray photoelectron and Fouri
Filiaciones:
UNAM, Ctr Nanociencias & Nanotecnol, Ensenada 22800, Baja California, Mexico
Centro de Investigación en Ingeniería y Ciencias Aplicadas, UAEM, Av. Universidad, 1001, Col. Chamilpa, CP 62210 Cuernavaca, Morelos, Mexico
Research Center for Exotic Nanocarbon (JST), Shinshu University, 4-17-1 Wakasato, Nagano 380-8553, Japan
Centro de Nanociencias y Nanotecnología de la UNAM, Apdo. Postal 2681 C.P. 22800, Ensenada, B.C., Mexico
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