The structural criteria of hydrolytic stability in series of dioxaborine polymethine dyes

The structural criteria that affect stability to the alkaline hydrolysis of dioxaborine dyes were analyzed. Dyes with different electron-donor and electron-withdrawing groups conjugated with dioxaborine cycle, and also having some steric effects were analyzed. For this purpose, some new dioxaborine...

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Bibliographic Details
Published in:Dyes and pigments 2011-04, Vol.89 (1), p.76-85
Main Authors: Gerasov, Andrii O., Zyabrev, Konstantin V., Shandura, Mykola P., Kovtun, Yuriy P.
Format: Article
Language:English
Subjects:
Absorption
Criteria
Dioxaborine
Dye
Dyes
Hydrolysis
Pigment
Pigments
Stability
Steric effects
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Summary:The structural criteria that affect stability to the alkaline hydrolysis of dioxaborine dyes were analyzed. Dyes with different electron-donor and electron-withdrawing groups conjugated with dioxaborine cycle, and also having some steric effects were analyzed. For this purpose, some new dioxaborine dyes were synthesized. It was shown that electron-donor substituents, unlike electron-withdrawing ones, increase the hydrolytic stability of the dioxaborine dyes. The possible way of the basic hydrolysis of dioxaborine dyes was suggested. The products of the partial hydrolysis of the symmetrical dioxaborine dyes were first obtained.
ISSN:0143-7208
1873-3743
DOI:10.1016/j.dyepig.2010.09.007