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|Title:||ESCA studies of protonation in polyaniline|
|Authors:||Kang, E.T. |
|Citation:||Kang, E.T.,Neoh, K.G.,Tan, K.L. (1989). ESCA studies of protonation in polyaniline. Polymer Journal 21 (11) : 873-881. ScholarBank@NUS Repository.|
|Abstract:||The structural changes associated with the protonation of polyemeraldine base by various protonic acids were studied by X-ray photoelectron spectroscopy (XPS). The imine, amine and positively charged nitrogen corresponding to a particular oxidation state and protonation level were quantitatively differentiated in the properly deconvoluted Nls core-level spectrum. The actual degree of protonation in the HCl and HBr complexes was determined from the halogen anion core-level component. The anion in the H2SO4 complex was found to be the monovalent HSO4 - species. Treatment of the HBr, HNO3, and H2SO4 protonated polyemeraldine with HCl readily resulted in the exchange of the anion species.|
|Source Title:||Polymer Journal|
|Appears in Collections:||Staff Publications|
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