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Papers by karuna baste

Research paper thumbnail of Vote Like an Egyptian: Islamism, Feminism, and Women of the Muslim Brotherhood

Research paper thumbnail of Synthesis, Characterization and Color Fastness Studies of Some New 1,4,-Di-Azophenyl-(1/-Phenyl-3/-Aryl-4/-Substituted Phenyl)-Pyrazoles

A series of novel 1, 4,-Di-Azophenyl-(1-phenyl-3-Aryl-4-Substituted phenyl)-pyrazoles (4a-m) were... more A series of novel 1, 4,-Di-Azophenyl-(1-phenyl-3-Aryl-4-Substituted phenyl)-pyrazoles (4a-m) were synthesized by coupling reaction of 1-phenyl-3-(2 / -hydroxy phenyl)-4-substituted phenyl-pyrazoles (3am) with diazotized 1,4-Diamino phenyl (2). These dyes have been prepared in good yield and were characterized by UV-Visible, FT-IR and 1 H-NMR Spectroscopic techniques. The effect of solvent polarity and various PH on dyes in the visible absorption spectra were evaluated.

Research paper thumbnail of Vote Like an Egyptian: Islamism, Feminism, and Women of the Muslim Brotherhood

Research paper thumbnail of Synthesis, Characterization and Color Fastness Studies of Some New 1,4,-Di-Azophenyl-(1/-Phenyl-3/-Aryl-4/-Substituted Phenyl)-Pyrazoles

A series of novel 1, 4,-Di-Azophenyl-(1-phenyl-3-Aryl-4-Substituted phenyl)-pyrazoles (4a-m) were... more A series of novel 1, 4,-Di-Azophenyl-(1-phenyl-3-Aryl-4-Substituted phenyl)-pyrazoles (4a-m) were synthesized by coupling reaction of 1-phenyl-3-(2 / -hydroxy phenyl)-4-substituted phenyl-pyrazoles (3am) with diazotized 1,4-Diamino phenyl (2). These dyes have been prepared in good yield and were characterized by UV-Visible, FT-IR and 1 H-NMR Spectroscopic techniques. The effect of solvent polarity and various PH on dyes in the visible absorption spectra were evaluated.

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