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Effect of Benzheterazoles on the Micellar Behavior of Sodium Dodecylsulfate in Dimethylsulfoxide: A Conductometric and Spectroscopic Approach
Author(s) -
Chauhan Suvarcha,
Manglam Anand Kumar,
Kumari Santosh,
Kaundal Pooja,
Sundaresan Chittor N.
Publication year - 2020
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1002/jsde.12358
Subject(s) - chemistry , critical micelle concentration , conductometry , thermodynamics of micellization , enthalpy , micelle , sodium , pulmonary surfactant , intermolecular force , inorganic chemistry , organic chemistry , aqueous solution , thermodynamics , molecule , biochemistry , physics
In this article, we report intermolecular interactions in terms of the effect of benzfused heterocyclic compounds, i.e., 2‐thioureidobenzimidazole and 2‐thioureidobenzoxazole (0.00, 0.01, and 0.05 mol kg −1 ), on the micellization behavior of sodium dodecylsulphate (SDS) (1–52 mmol kg −1 ) in dimethylsulphoxide (DMSO) at different temperatures (293.15–313.15 K) through conductometric and spectroscopic investigations. The variation of specific conductance with SDS concentration has been utilized to estimate the critical micelle concentration ( CMC ). The above‐performed techniques infer that the presence of additives results in a decrease in the CMC values. Various standard thermodynamic parameters such as free energy change ( Δ G m o ), enthalpy change ( Δ H m o ), and entropy change ( Δ S m o ) of micellization have been determined using the temperature dependence of CMC . The above calculated parameters and also UV–visible and fluorescence spectroscopy have been used to obtain information regarding the various interactions between the compounds and surfactant aggregates. In addition, an attempt has also been made to examine the minimum inhibitory concentration (MIC) of the heterocompounds, which indicates the effectiveness of these compounds against fungus growth at a particular concentration. These synthetic heterocyclic compounds find increasing applications in material science, medicinal chemistry, and biochemistry due to their antifungal and antioxidant properties.