Chemical Science & Engineering Research
Title
Temperature Dependence on the Molecular Interaction of Amaranth Dye with Cetyltrimethylammonium bromide in the Premicelle Region: A Spectroscopy Study
Authors
Olaseni Segun Esan
Article History
Publication details: Received: 26th February 2020; Revised: 16th March 2020; Accepted: 16th March 2020; Published: 06th April 2020
Cite this article
Olaseni S. E. Temperature Dependence on the Molecular Interaction of Amaranth Dye with Cetyltrimethylammonium bromide in the Pre-micelle Region: A Spectroscopy Study. Chem. Sci. Eng. Res., 2020, 2(3), 21-26.
Abstract
Interactions of amaranth dye [Amr] with cetyltrimethylammonium ammonium bromide [CTABr] have been investigated using UV-spectrophotometric technique. Finding from the variation absorption spectral shows that absorbance values at the highest peak changes on addition of CTABr indicating that interaction exist between Amr and CTABr. The binding constant [Kb] between the micellar/water phases has been obtained using appropriate model from which the thermodynamic parameters have been calculated at different temperatures. The binding decreases with increasing temperatures. The free energy [ΔG0], entropy [ΔS0] and enthalpy [ΔH0] changes regarding binding process are spontaneous, exothermic and enthalpy driven.
Keywords
Amaranth; Pre-micelle; Reso-Drago; Binding constant; Spectroscopy