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http://dx.doi.org/10.5012/bkcs.2003.24.4.426

Synthesis and Absorption Spectral Properties of Bis-methine Dyes Exemplified by 2,5-Bis-arylidene-1-dicyanomethylene-cyclopentanes  

Asiri, Abdullah Mohamed (Chemistry Department, Faculty of Science, King Abdul-Aziz University)
Publication Information
Bulletin of the Korean Chemical Society / v.24, no.4, 2003 , pp. 426-430 More about this Journal
Abstract
A range of methine dyes has been synthesized by condensation of highly electronegative active methylene compound dicyanomethylenecyclopentane derived from cyclopentanone with the formyl group of substituted benzaldehydes. The electronic absorption spectroscopic properties of the dyes were investigated. In general, substituents on the aromatic aldehyde moiety have a significant effect on the visible absorption maxima of the dyes; increasing the solvent polarity also showed a pronounced effect on the absorption maxima.
Keywords
Bis-methine dyes; Malononitrile; Cyclopentanone; Dicyanomethylenecyclopentane; Chalcones;
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Times Cited By Web Of Science : 5  (Related Records In Web of Science)
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