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Electronic spectra of some new synthesised methine cyanine dyes

โœ Scribed by Ragab M Abu El-Hamd


Book ID
112917972
Publisher
Indian Academy of Sciences,Royal Society of Chemistry
Year
1995
Tongue
English
Weight
564 KB
Volume
107
Category
Article
ISSN
0253-4134

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โœ Reda M. Abd El-Aal; Hassan A. Shindy; Ahmed Ibrahim M. Koraiem ๐Ÿ“‚ Article ๐Ÿ“… 1997 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 242 KB ๐Ÿ‘ 2 views

The reaction of a ratio of 1 mole of 5-chloro-3-methyl-1-phenyl pyrazolo-4[2(4)]-dimethine cyanine (1a,b) or (5-chloro-4-formyl-3-methyl-1-phenylpyrazole) 2 with 2 moles of an appropriate 2(4)-heterocyclic quaternary salt afforded the novel pentamethine cyanine dyes (3a-3e). Other reactions of 2 wit