Effect of solution concentration on the UV–vis spectroscopy measured oxidation state of polyaniline base

The effect of the concentration of polyaniline (PANI) base in dimethyl formamide (DMF) solution on the UV–vis spectroscopy determined oxidation state of PANI is presented. It is shown for the first time that the UV–vis spectra determined oxidation state of the same PANI decreased with increasing con...

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Bibliographic Details
Published inPolymer testing Vol. 24; no. 2; pp. 153 - 156
Main Authors Wang, Yangyong, Jing, Xinli
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.04.2005
Subjects
Lambert-Beer law
Oxidation state
Polyaniline
UV-vis spectioscopy
UV-vis spectioscopy
Lambert-Beer law
Polyaniline
Oxidation state
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Summary:The effect of the concentration of polyaniline (PANI) base in dimethyl formamide (DMF) solution on the UV–vis spectroscopy determined oxidation state of PANI is presented. It is shown for the first time that the UV–vis spectra determined oxidation state of the same PANI decreased with increasing concentration of the testing solution in the UV–vis measurement, and showed also a fluctuation with the testing time interval. Together with the analysis of the Lambert–Beer law, it was concluded that only when the testing concentration was specified, could the UV–vis spectra be used to illuminate or differentiate the oxidation state of PANI base.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0142-9418
1873-2348
DOI:10.1016/j.polymertesting.2004.09.013