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Optical sensing of pH using thin films of substituted polyanilines

Pringsheim, Erika ; Terpetschnig, Ewald ; Wolfbeis, Otto S.
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Date of publication of this fulltext: 07 Jun 2011 11:15


Abstract

Polyanilines (PANIs) are viable materials for use in optical sensing of pH. Thin films of substituted PANI readily deposit on the inner walls of polystyrene cuvettes when a substituted aniline is chemically polymerized in hydrochloric acid solution. The films have been characterized by absorption spectra which have maxima between 600 and 810 nm, except for halogenated or p-substituted anilines. ...

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