IMBIV 05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Spectroscopic characterization of thionine species in different media
Autor/es:
VIVIANA NICOTRA, MARÍA F. MORA, RODRIGO A. IGLESIAS AND ANA M. BARUZZI
Revista:
DYES AND PIGMENTS
Editorial:
ELSEVIER LTD.
Referencias:
Lugar: Amsterdam; Año: 2007 vol. 76 p. 315 - 318
ISSN:
0143-7208
Resumen:
The influence of pH on aggregate formation and changes in the structure of thionine monomers in solution has been determined. Spectroscopic data (UV-vis and 1H NMR) revelated that a free base form of the dye is formed at basic pH values, which displays highly hydrofobic behavior. The cationic monomeric form can be photoredeced in both organic and aqueous solution, while the free base form dis not show any photoactivity in such media.
