On the porosity of polypyrrole films

被引：46

作者：

Hallik, Allan ^{[1
]}

Alumaa, Ants ^{[1
]}

Kurig, Heisi ^{[1
]}

Jaenes, Alar ^{[1
]}

Lust, Enn ^{[1
]}

Tamm, Jueri ^{[1
]}

机构：

[1] Univ Tartu, Inst Phys Chem, EE-51014 Tartu, Estonia

来源：

SYNTHETIC METALS | 2007年 / 157卷 / 24期

关键词：

polypyrrole; counter-ion; porosity; surface area; BET method; nitrogen adsorption;

D O I：

10.1016/j.synthmet.2007.10.017

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polypyrrole (PPy) films doped with anions of various size, charge and chemical nature (inorganic, surfactant, with aromatic ring) were electrochemically synthesized and investigated by low-temperature N-2 sorption experiments at -196C. The specific surface area, total pore volume, average pore radius, pore size distribution and other parameters for oxidized PPy films using dodecylsulfate, 2-naphthalene sulfonate, 1,5-naphthalene disulfonate, poly(4-styrenesulfonate), tosylate, perchlorate, nitrate and chloride as dopant ions, were calculated. The obtained data show that although the average pore radius of investigated mesoporous PPy films (17-19 angstrom) is practically independent of the dopant anion used, however the latter determines the total pore volume and specific surface area values in different PPy materials investigated. As the total pore volumes for PPy films doped with large amphiphilic anions show the smallest values, the corresponding values for PPy/small inorganic anions, are up to 2 times higher. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：1085 / 1090

页数：6

共 48 条

[1] On the improvement of stability of polypyrrole films in aqueous solutions [J].