Influence of substrate conductivity on electrochemical polymerization of O-methoxyaniline

Citation
S. Patil et al., Influence of substrate conductivity on electrochemical polymerization of O-methoxyaniline, MAT SCI E B, 87(2), 2001, pp. 134-140
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
0921-5107 → ACNP
Volume
87
Issue
2
Year of publication
2001
Pages
134 - 140
Database
ISI
SICI code
0921-5107(20011115)87:2<134:IOSCOE>2.0.ZU;2-E
Abstract
The influence of substrate conductivity on electrochemical polymerization ( ECP) of O-methoxyaniline on transparent conducting SnO2 and SnO2:F coated g lass substrates has been investigated. In this work, transparent conducting SnO2 and SnO2:F coated glass substrates having different electrical conduc tivities were used as the substrates for the synthesis of poly (O-methoxyan iline) (POMA) thin films. These substrates were characterized by x-ray diff raction (XRD) measurements. The POMA thin films were synthesized on these s ubstrates by ECP of O-methoxyaniline under cyclic voltammetric conditions. The POMA thin films were characterized by cyclic voltammetry, UV-visible sp ectroscopy, scanning electron microscopy (SEM) and electrical conductivity measurements. It was observed that the efficiency of the polymerization pro cess depends on the substrate conductivity and it increases with increasing the substrate conductivity. The optical absorption spectra show a major pe ak at similar to 800 nm corresponding to emeraldine salt (ES) phase of POMA irrespective of the substrate conductivity, However, the systematic increa se in the overall absorbance and the sharpness of the peak at similar to 80 0 nm is observed with the increase in the substrate conductivity. The surfa ce morphology of the POMA films also found to be depend on the substrate co nductivity. (C) 2001 Elsevier Science BN. All rights reserved.