94119-31-0Relevant academic research and scientific papers
Cation-Anion Combination Reactions. 18. Reactions of Nucleophiles with an Ion Pair
Ritchie, Calvin D.,Hofelich, Thomas C.
, p. 7039 - 7044 (1980)
The reactions of an intramolecular ion pair, Phenol Red Dimethyl Ether (4',4''-dimethoxytritylium-2-sulfonate) with nucleophiles have been studied and compared with analogous reactions of a sterically similar unpaired cation, DAMS (4',4''-dimethoxy-2-(met
Kinetics of fading of some triphenylmethane dyes: Effects of electric charge, substituent, and aqueous binary mixtures of dimethyl sulfoxide and 2-propanol
Samiey,Dalvand
, p. 60 - 70 (2014/01/06)
The rate constants of alkaline fading of a number of triphenylmethane (TPM) dyes including methyl green (ME2+), brilliant green (BG +), fuchsin acid (FA2-), and bromophenol blue (BPB 2-) were obtained in aqueous binary mixtures of 2-propanol (protic solvent) and dimethyl sulfoxide (DMSO) (aprotic solvent) at different temperatures. It was observed that the reaction rate constants of BG+ and ME2+ increased and those of FA2- and BPB2- decreased with an increase in weight percentages of aqueous 2-propanol and DMSO binary mixtures. 2-Propanol and DMSO interact with the used TPM molecules through hydrogen bonding and ion-dipole interaction, respectively, in addition to their hydrophobic interaction with TPM dyes. The fundamental rate constants of a fading reaction in these solutions were obtained by the SESMORTAC model. Also, the effect of electric charge and substituent groups of a number of TPM dyes on their alkaline fading rate was studied.
