The effect of ultrasonic waves in conducting polymer solution

被引：11

作者：

de Azevedo, W. M. ^{[1
]}

de Oliveira Luna, A. J. H. ^{[1
]}

Silva, E. F. V. B. N. ^{[1
]}

Silva, R. O. ^{[1
]}

机构：

[1] Univ Fed Pernambuco, CCEN, Lab Quim Estado Solido, Dept Quim Fundamental, BR-50670901 Recife, PE, Brazil

来源：

ULTRASONICS SONOCHEMISTRY | 2006年 / 13卷 / 05期

关键词：

polyaniline; ultrasonic wave; solvent purification;

D O I：

10.1016/j.ultsonch.2005.10.002

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The effects of ultrasonic wave on the conducting polymer polyaniline dissolved in DMSO were observed. The UV-visible, infrared and NMR analysis show that the polymer undergo a redox and doping transition when the ultrasound wave interacts with the polymer dissolved into the solvent. The proposed mechanism to explain these effects is based on the solvent's hygroscopicity properties. The interaction with the ultrasonic wave, homolitically dissociates the water molecule producing radical species, and these species interact with the dissolved conducting polymer changing its oxidation and doped state. The resulting effects of that interaction are the modification of oxidation state of the conducting polymer and the decrease of the amount of water molecule in the solvent. From those results, we have proposed one straightforward method to eliminate water contamination in the solvent DMSO using ultrasonic waves. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：433 / 437

页数：5

共 35 条

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