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(1)H NMR and viscometric studies on cationic gemini surfactants in presence of aromatic acids and salts.
The behavior of addition of aromatic acids and their sodium salts on the micellar morphological changes in cationic gemini surfactant solutions is explained in the light of binding of counterions to the micelle as well as the nature of the functional group attached to the additive.
Micelle‐catalyzed reaction of ninhydrin with DL‐valine in the absence and presence of organic solvents
Kinetics of the DL-valine-ninhydrin reaction has been studied spectrophotometrically under varying conditions of [CTAB], [ninhydrin], [DL-valine], pH, temperature, and %(v/v) organic solvents
Role of cationic gemini surfactants toward enhanced ninhydrin–tryptophan reaction
In this paper we report the effect of dicationic ‘gemini’ surfactants (CH3)2C16H33N+ (CH2)mN+C16H33(CH3)2, 2Br− (where m = 4, 5, 6) on the reaction of ninhydrin with DL-tryptophan. The gemini
Surface and Solution Properties of Alkanediyl-α,ω-bis(dimethylcetylammonium bromide) Gemini Surfactants in the Presence of Additives
Herein, we report the results of a study of surface and micellar properties of alkanediyl-α,ω-bis(dimethylcetylammonium bromide) gemini surfactants in pure aqueous solutions and also in the presence
A 1H NMR study of 1,4-bis(N-hexadecyl-N, N-dimethylammonium)butane dibromide/sodium anthranilate system: spherical to rod-shaped transition
The effect of addition of sodium anthranilate to 5 mM micellar solutions of gemini surfactant 1,4-bis(N-hexadecyl-N,N-dimethylammonium)butane dibromide is investigated by 1H NMR. The solubilization
Micelle Catalysed Reaction of Ninhydrin and DL-Tryptophan
The kinetics of the reaction of ninhydrin and DL-tryptophan has been carried out in TX-100 micellar media at 40°C and pH 5.0 (sodium acetate-acetic acid buffer). The reaction rate increased with
Effect of Benzilaminopurine and Kinetin for shoot multiplication of Indigofera (Indigofera zollingeriana Miq.) by in vitro culture
Results showed that BAP gave the best results for number of shoots parameter at any concentration, while media with Kinetin showed no significant effect on all parameters and there was no interaction between BAP andKinetin.
Effect of organic solvents (methylcellosolve, dimethylsulfoxide, acetonitrile and 1-propanol) on the tryptophan-ninhydrin reaction - : A kinetic approach
Kinetics of the tryptophan-ninhydrin reaction at a constant [Triton X-100] (=50.0 x 10 - 3 mol dm - 3 ) and pH (=5.0), maintained by CH 3 COONa-CH 3 COOH, in presence of different organic solvents,