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2014-09-30T03:41:50Z
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Effects of chemical structure, solvent and solution pH on the visible spectra of some new methine cyanine dyes
Shindy, Hassan Abazied
El-Maghraby, Mohamed Abdalla
Eissa, Fayez Mohamed
Synthesis
Cyanine dyes
Absorption spectra
Acid-base properties
Dimethine cyanine dyes
Solvent effect on spectra
Some new dimethine and bis-dimethine, cyanine dyes derived from benzo[2,3-b; 2`,3`-b`]bis-pyrazolo[4,5-b]-l,4-(oxa-, thia-, and pyra-)-zine-6,12-dione were synthesized. Effect of chemical structure on the electronic visible absorption spectra of all the synthesized cyanine dyes was investigated in 95% ethanol solution. Effects of solvent and/or solution pH on the electronic visible absorption spectra of some selected synthesized cyanine dyes were also examined in pure solvents having different polarities and/or in aqueous universal buffer solutions, respectively. Structural confirmations were carried out through elemental analysis, mass spectroscopy, IR and 1H NMR spectra.
Atlanta Publishing House LLC
2014-09-30
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
application/pdf
https://www.eurjchem.com/index.php/eurjchem/article/view/1033
10.5155/eurjchem.5.3.451-456.1033
European Journal of Chemistry; Vol. 5 No. 3 (2014): September 2014; 451-456
2153-2257
2153-2249
eng
https://www.eurjchem.com/index.php/eurjchem/article/view/1033/pdf_1033