Anodic Electrodeposition of Highly Oriented Zirconium Phosphate and Polyaniline-Intercalated Zirconium Phosphate Films
详细信息 查看全文
- 作者：Takahiro Takei ; Yoji Kobayashi ; Hideo Hata ; Yoshinori Yonesaki ; Nobuhiro Kumada ; Nobukazu Kinomura ; Thomas E. Mallouk
- 刊名：Journal of the American Chemical Society
- 出版年：2006
- 出版时间：December 27, 2006
- 年：2006
- 卷：128
- 期：51
- 页码：16634 - 16640
- 全文大小：476K
- 年卷期：v.128,no.51(December 27, 2006)
- ISSN：1520-5126
文摘
Films of highly oriented 
-zirconium phosphate and polyaniline-intercalated zirconium phosphatewith controllable thickness in the micrometer range were grown anodically on Pt electrodes. To optimizethe electrodeposition conditions, the exfoliation of -zirconium phosphate by tetrabutylammonium (TBA)salts was investigated in several nonaqueous solvents. Acetonitrile was found to be the best solventfor making crack-free, oriented films because of its high vapor pressure, low viscosity, and relativelyhigh permittivity. With TBA salts of neutral or weakly acidic anions (TBACl, TBABr, TBAI, TBA(HSO4), orTBA(H2PO4)), full exfoliation did not occur and -zirconium phosphate and/or polyaniline were depositedas rough films. With basic anions (TBAF or TBAOH), dense, adherent films were obtained. X-ray diffractionpatterns of the films showed that they were highly oriented along the stacking axis. The thickness could becontrolled, up to about 40 
m, by limiting the time of the electrodeposition reaction. At monomerconcentrations below 1.0 × 10-2 mol/dm3, the emeraldine form of the intercalated polymer was obtained.Electrodeposition thus provides a thick film alternative to layer-by-layer assembly for intercalation compoundsof -zirconium phosphate with a conducting polymer.
-zirconium phosphate and polyaniline-intercalated zirconium phosphatewith controllable thickness in the micrometer range were grown anodically on Pt electrodes. To optimizethe electrodeposition conditions, the exfoliation of -zirconium phosphate by tetrabutylammonium (TBA)salts was investigated in several nonaqueous solvents. Acetonitrile was found to be the best solventfor making crack-free, oriented films because of its high vapor pressure, low viscosity, and relativelyhigh permittivity. With TBA salts of neutral or weakly acidic anions (TBACl, TBABr, TBAI, TBA(HSO4), orTBA(H2PO4)), full exfoliation did not occur and -zirconium phosphate and/or polyaniline were depositedas rough films. With basic anions (TBAF or TBAOH), dense, adherent films were obtained. X-ray diffractionpatterns of the films showed that they were highly oriented along the stacking axis. The thickness could becontrolled, up to about 40 m, by limiting the time of the electrodeposition reaction. At monomerconcentrations below 1.0 × 10-2 mol/dm3, the emeraldine form of the intercalated polymer was obtained.Electrodeposition thus provides a thick film alternative to layer-by-layer assembly for intercalation compoundsof -zirconium phosphate with a conducting polymer.