INVESTIGADORES
NICOTRA Viviana Estela
artículos
Título:
Spectroscopic characterization of thionine species in different media
Autor/es:
VIVIANA E. NICOTRA; MARÍA F. MORA; RODRIGO A. IGLESIAS; 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 (UVevis and 1H NMR) revealed that a free base form of the dye is formed at basic pH values, which displays highly hydrophobic behavior. The cationic monomeric form can be hotoreduced in both organic and aqueous solution, while the free base form did not show any photoactivity in such media.
