- Thionine immobilized in crosslinked chitosan films

LEANDRO GERBINO; MIRIAM STRUMIA; RODRIGO IGLESIAS; ANA BARUZZI

ELSEVIER SCIENCE SA

Año: 2008 p. 455 - 455

font face="Times-Roman" size="1"> Redox and acid–base properties of thionine immobilized in crosslinked chitosan films are analyzed. The experimental conditions for the preparation of the films are described. Results obtained with cyclic voltammetry, spectroelectrochemistry and spectrophotometry indicate that the immobilized dye retains the redox and acid–base activity of free thionine. An acid dissociation constant (Ka) for the immobilized dye ofKa