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Article . 2017
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Novel Pyrazolo Pyrazoly Heterocyclic In The Synthesis Of Positive Solvatochromic Cyanine Dyes

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2017 English Publisher:Zenodo
Authors: R. M. Abdel Aal; I. I. Abd El Gawad; Z. M. Essam;

doi: 10.5281/zenodo.1473341 , 10.5281/zenodo.1473340

Novel Pyrazolo Pyrazoly Heterocyclic In The Synthesis Of Positive Solvatochromic Cyanine Dyes

Abstract

Novel cyanine dyes monomethine, bismonomethine and trimethine cyanine dyes were synthesized from 5-hydroxy-2-(5-hydroxy-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-4-yl)-3-methyl-1-phenyl-4,5-dihydro-1H-pyrazol-2-ium as a nucleus. Structure confirmed by elemental analysis, IR, 1H-NMR, mass and visible was determined. The electronic visible absorption spectra of all the newly synthesized cyanine dyes were investigated in 95% ethanol solution. Solvatochromism for the newly prepared cyanine dyes were performed in pure solvents having different polarities.

Keywords

Monomethine cyanine dyes, Solvatochromism, Visible, Trimethine

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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
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influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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impulse
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