期刊
DYES AND PIGMENTS
卷 76, 期 2, 页码 315-318出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.dyepig.2006.09.001
关键词
thionine; leucothionine; photoinduced reaction; conjugated imine
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 H-1 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 photoreduced in both organic and aqueous solution, while the free base form did not show any photoactivity in such media. (c) 2006 Elsevier Ltd. All rights reserved.
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