Anionic merocyanine colored dyes based on (4-nitro/cyanophenyl)-substituted thiazol-2-
hydrazides (THAs), which are donor–π–acceptor type push–pull molecular systems and …

Brooker's merocyanine (BM) is a classic solvatochromic probe, which exhibits a band in the
visible region sensitive to changes in the polarity of the medium. BM shows a reversion in its …

Six methylated heteroarylazo quinoline dyes with different electron-withdrawing/donating
substituents, namely 5-(4-substituted arylazo)-8-hydroxy-2-methyl quinoline dyes, were …

Eight compounds with phenols as electron‐donating groups and 5‐nitrothiophen‐2‐yl or 5‐
nitrofuran‐2‐yl acceptor moieties in their molecular structures were synthesized. The …

New donor–acceptor-substituted azo dyes, such as 2-({4-[(E)-(2, 4-dinitrophenyl) diazenyl]-2-
nitrophenyl} amino) propane-1, 3-diol,(2S)-1-{4-[(E)-(2, 4-dinitrophenyl) diazenyl]-2 …

4-(Nitrostyryl) phenols 2a–9a were synthesized, and by deprotonation in solution, the
solvatochromic phenolates 2b–9b were formed. Their absorption bands in the vis region of …

A novel bis-azo dye, 4, 4′-((1E, 1′ E)-(oxybis (4, 1-phenylene)) bis (diazene-2, 1-diyl)) bis
(naphthalen-1-amine)(abbreviated as 4odna) was synthesized and characterized by IR and …

Six dyes with N, N‐dimethylaminophenyl and 4‐nitrophenyl or 2, 4‐dinitrophenyl groups in
their molecular structures were prepared and characterized. These compounds have …

The influence of solvent polarity on the electronic transition of four different N-hexadecyl
styrylpyridinium dyes has been investigated in 15 solvents. The ET (30) scale has been …

Absorption and emission spectra of three hetarylazoquinoline compounds with different
substituents were examined in liquids and liquid crystalline solvents for the first time. The …