Synthesis and characterization of cationic quaternary ammonium geminis (16-s-16) and their role in ninhydrin-[Cu(II)-His]+ reaction

Cationic quaternary ammonium gemini surfactants were synthesized by mixing N,N-dimethylcetylamine and α,ω-dibromoalkane. The synthesized products were characterized by C, H, N elemental and 1 H NMR analyses. The critical micelle concentration (CMC) of these surfactants with and without additives was...

Full description

Saved in:
Bibliographic Details
Published inChemical engineering communications Vol. 208; no. 11; pp. 1607 - 1617
Main Authors Kumar, Dileep, Rub, Malik Abdul
Format Journal Article
LanguageEnglish
Published Philadelphia Taylor & Francis 02.11.2021
Taylor & Francis Ltd
Subjects
Additives
catalysis
Cations
Cu(II)-His
interfacial properties
kinetics
Micelles
Ninhydrin
NMR
Nuclear magnetic resonance
quaternary ammonium geminis
surfactant micelles
Surfactants
Online AccessGet full text

Cover

More Information
Summary:Cationic quaternary ammonium gemini surfactants were synthesized by mixing N,N-dimethylcetylamine and α,ω-dibromoalkane. The synthesized products were characterized by C, H, N elemental and 1 H NMR analyses. The critical micelle concentration (CMC) of these surfactants with and without additives was calculated by means of the conductivity technique. The role of the synthesized quaternary ammonium geminis in the reaction was investigated by a UV-vis spectroscopy. The rate constant (k ψ ) was determined at different gemini concentrations and plotted graphically as k ψ vs. [16-s-16]. Additionally, the influence of other reaction parameters (viz., reactants, pH, and temperature) was investigated. The binding constants were also determined (K A for [Cu(II)-His] + and K B for ninhydrin). The resulting k ψ -[16-s-16] plot can be understood in terms of a pseudo-phase model of micelles.
ISSN:0098-6445
1563-5201
DOI:10.1080/00986445.2020.1805437