123344-19-4Relevant academic research and scientific papers
The effects of cyclic terminal groups on the electronic absorption spectra of di- and tri-phenylmethane dyes
Beach, Steven F.,Hepworth, John D.,Jones, Peter,Mason, Donald,Sawyer, John,et al.
, p. 1087 - 1090 (2007/10/02)
The spectral shifts of the first absorption bands brought about by cyclic terminal groups in analogues of Michler's Hydrol Blue, Malachite Green, and Crystal Violet are determined mainly by inductive effects.Dye cations containing terminal pyrrolidino substituents are significantly more stable than those possessing piperidino groups as a result of differences in basicity brought about by a change in size of the saturated heterocyclic ring.
The Hydrolysis of Brilliant Green and Some Derivatives. Part 2. The Kinetics of the Hydrolysis of 3- and 4-Substituted Derivatives of Brilliant Green
Fox, Brenda M.,Hepworth, John D.,Mason, Donald,Hallas, Geoffrey
, p. 987 - 992 (2007/10/02)
Rate constants have been measured for the reactions of hydroxide ion with the following derivatives of Brilliant Green in aqueous solution: 3-X (X = Cl, OMe, CF3, Me, NO2, NMe2, or OH); 4-X (X = Cl, OMe, CF3, Me, NO2, or NMe2).The substituents affect the rate of hydrolysis to an extent linearly related to the appropriate Hammett substituent constant.Thermodynamic parameters ΔH(excit.) and ΔS(excit.) have been obtained for each dye and the reaction is shown to be under entropy control.
