XLVIII.—SOME NEW AZO COLORS.

Optical Properties of Some New Azo Photoisomerizable Bismaleimide Derivatives

Novel polythioetherimides bearing azobenzene moieties were synthesized from azobismaleimides and bis-2-mercaptoethylether. Kinetics of trans-cis photoisomerization and of thermal conversion of cis to trans isomeric forms were investigated in both polymer solution and poly(methyl methacrylate) doped films using electronic absorption spectroscopy. Thermal recovery kinetics is well described by a ...

Inner Workings: Tarantula tint inspires new ways of making colors.

Luminance contours can gate afterimage colors and "real" colors.

It has long been known that colored images may elicit afterimages in complementary colors. We have already shown (Van Lier, Vergeer, & Anstis, 2009) that one and the same adapting image may result in different afterimage colors, depending on the test contours presented after the colored image. The color of the afterimage depends on two adapting colors, those both inside and outside the test. He...

Azo mesogenic compounds

Series of elongated azo esters containing three rings with methyl moiety as one of the terminal carbon chain and various substituents R(R=H,CH3,OCH3,NO2,Cl) at the other end of the molecule have been isolated , and their structure were were characterized by H-NMR and IR as well as elemental analysis . The mesomorphic properties of these compounds were investigated via differential scanning calo...

Synthesis of Some New Azo Disperse Dyes and Investigation of Their Solvatochromic Effect

The synthesis and properties of new monoazo dyes derived from the diazonium salts of paminobenzoic acid, 3-trifluoromethyl aniline , 4-trifluoromethyl aniline are considered .Theprepared compounds were characterized by UV-Visible , FT-IR and H NMR spectroscopictechniques . The effect of varying solvent upon the absorption ability of p-amino benzoic acidcoupled with 4,4 —diethyl aniline , anilin...