Substituent Effects on the Visible Absorption Spectra of Aininoazobenzene Disperse Dyes in Acidic Solution
- 1 September 1974
- journal article
- research article
- Published by SAGE Publications in Textile Research Journal
- Vol. 44 (9), 719-723
- https://doi.org/10.1177/004051757404400914
Abstract
Visible absorption maxima of a range of aminoazobenzene disperse dyes in neutral and acidic media are recorded. Spectral shifts resulting from structural changes in the diazonium and coupling components are related to Hammett σ-constants of substituents and to the pKa values of the dyes.Keywords
This publication has 7 references indexed in Scilit:
- Solvent and Substituent Effects on the Ultraviolet-Visible Absorption Spectra of Azo DyesTextile Research Journal, 1972
- Prediction of Colour Change in Dye Equilibria I‐Azo and Hydrazone Tautomers and Anions of 4‐Phenylazo‐1‐naphtholsJournal of the Society of Dyers and Colourists, 1972
- Synthesis and Electronic Spectra of some 4–AminoazobenzenesJournal of the Society of Dyers and Colourists, 1970
- The ultraviolet spectra of some monosulphonated derivatives of 4-dimethylaminoazobenzeneTetrahedron, 1964
- Structures of the mono-acid cations of 4-aminoazobenzene and its derivativesTetrahedron, 1960
- Physical Properties of the Aminoazobenzene Dyes. IV. The Position of Proton Addition1The Journal of Organic Chemistry, 1957
- The Physical Properties of the Aminoazobenzene Dyes. III. Tautomerism of 4-Aminoazobenzene Salt Cations in Acid Solution1The Journal of Organic Chemistry, 1956