《Interaction of ninhydrin with zinc(II) complex of tryptophan in the three dicationic gemini surfactants》 was written by Abdul Rub, Malik; Kumar, Dileep. Formula: C6H12Br2This research focused onzinc ninhydrin tryptophan gemini surfactant critical micellar concentration. The article conveys some information:
Present work concerns with the interaction of ninhydrin with zinc(II) complex of tryptophan ([Zn(II)-Trp]+) in the three dicationic gemini surfactant systems. To record critical micellar concentration (CMC) and absorbance, we have used Systronics conductivity meter and UV-visible spectrophotometer, resp. Experiment opens up the fractional- and first-order paths in ninhydrin and complex, resp. Gemini micellar medium is found more superior over aqueous medium. Rate constant (kψ) vs. [gemini] plot shows the unusual role of geminis on kψ. kψ increases with gemini concentration (at concentrations lower than the CMC, part I) and leveling-off regions obtain (concentration up to 400 × 10-5 mol dm-3, part II). Characteristics of part I and part II are just the same as that of conventional surfactant. Later, gemini produces a third region of increasing kψ at higher concentrations ([gemini] > 400 × 10-5 mol dm-3, part III). Detail and systematic elucidation about the effect of surfactants are mentioned and discussed in the text. Binding constants (KS for [Zn(II)-Trp]+ and KN for ninhydrin) and rate constant (km in geminis) were determined by nonlinear least squares regression technique. The kinetic results acquired can reasonably be interpreted by pseudo-phase model of surfactant micelles. In the experimental materials used by the author, we found 1,6-Dibromohexane(cas: 629-03-8Formula: C6H12Br2)
1,6-Dibromohexane(cas: 629-03-8) is generally used to introduce C6 spacer in the molecular architecture. Some of the examples are: synthesis of solvent processable and conductive polyfluorene ionomers for alkaline fuel cell applications; synthesis of cross-linkable regioregular poly(3-(5-hexenyl)thiophene) (P3HNT) for stabilizing the film morphology in polymer photovoltaic cells.Formula: C6H12Br2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary