Strong electric fields promote oriented intercalative polymerization of pyrrole inside the lamellar matrices of vanadium pentoxide

被引：4
作者：
Demets, GJF [1 ]
Toma, HE [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim, BR-05513970 Sao Paulo, Brazil
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2003年 / 5卷 / 01期
关键词：
nanocomposites; vanadium pentoxide; polypyrrole; electric anisotropy;
D O I：
10.1016/S1388-2481(02)00543-X
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The effect of strong electric fields (e.g., 3.4 kV/m) in the 110 plane direction, in the conductivity of the V2O5 . nH(2)O xerogel (also known as VXG) and in the intercalative redox polymerization of pyrrole in the VXG matrices has been investigated. The resulting poly(pyrrole) nanocomposites exhibited electric anisotropy in the 100 and 010 crystallographic directions. Photomicrographies of such materials revealed that the polymer fibers tend to orient themselves along the applied field. (C) 2002 Published by Elsevier Science B.V.
引用
收藏
页码：73 / 77
页数：5
相关论文
共 37 条
[1]   Modified electrodes based on mixed bentonite vanadium(V) oxide xerogels [J].
Anaissi, FJ ;
Demets, GJF ;
Toma, HE ;
Coelho, ACV .
JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1999, 464 (01) :48-53
[2]   Characterization and properties of mixed bentonite-vanadium(V) oxide xerogels [J].
Anaissi, FJ ;
Demets, GJF ;
Toma, HE ;
Dovidauskas, S ;
Coelho, ACV .
MATERIALS RESEARCH BULLETIN, 2001, 36 (1-2) :289-306
[3]   Long-term aging of vanadium(V) oxide xerogel precursor solutions: structural and electrochemical implications [J].
Anaissi, FJ ;
Demets, GJF ;
Alvarez, EB ;
Politi, MJ ;
Toma, HE .
ELECTROCHIMICA ACTA, 2001, 47 (03) :441-450
[4]   Electrochemical conditioning of vanadium(V) pentoxide xerogel films [J].
Anaissi, FJ ;
Demets, GJF ;
Toma, HE .
ELECTROCHEMISTRY COMMUNICATIONS, 1999, 1 (08) :332-335
[5]  
ANAISSI FJ, IN PRESS MAT SCI ENG
[6]   TIN PASSIVATION OF VANADIUM IN METAL-CONTAMINATED FLUID-CRACKING CATALYSTS - ELECTRON-PARAMAGNETIC RESONANCE STUDIES [J].
ANDERSON, MW ;
OCCELLI, ML ;
SUIB, SL .
JOURNAL OF CATALYSIS, 1990, 122 (02) :374-383
[7]   Lithium intercalation into vanadium pentoxide: a theoretical study [J].
Braithwaite, JS ;
Catlow, CRA ;
Gale, JD ;
Harding, JH .
CHEMISTRY OF MATERIALS, 1999, 11 (08) :1990-1998
[8]   Novel method for synthesis of γ-lithium vanadium oxide as cathode materials in lithium ion batteries [J].
Dai, JX ;
Li, SFY ;
Gao, ZQ ;
Siow, KS .
CHEMISTRY OF MATERIALS, 1999, 11 (11) :3086-3090
[9]   Preparation and properties of polypyrrole/bentonite/vanadium (V) oxide ternary composites [J].
Demets, GJF ;
Anaissi, FJ ;
Toma, HE ;
Fontes, MBA .
MATERIALS RESEARCH BULLETIN, 2002, 37 (04) :683-695
[10]   Electrochemical properties of assembled polypyrrole/V2O5 xerogel films [J].
Demets, GJF ;
Anaissi, FJ ;
Toma, HE .
ELECTROCHIMICA ACTA, 2000, 46 (04) :547-554
1234