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The inclusion phenomena of β-Cyclodextrin and Alizarin complexone was investigated by 1H NMR, 2D ROESY, UV-Visible Spectroscopy, Fluorescence Spectroscopy, HRMS and SEM study. The change in chemical shift values in 1H NMR study established the possibility of interactions between the corresponding protons of β-Cyclodextrin and AC molecule, which was further confirmed by the appearance of cross peaks in 2D ROESY spectrum. The Job plot method gave the host-guest stoitiometric ratio to be 1 : 1. The association constant and thermodynamic parameters like ΔH 0 , ΔS 0 and ΔG 0 were calculated from UV-Visible spectroscopy. The experimental results showed, the fluorescence intensity of AC enhanced with increasing concentration of β-Cyclodextrin. The plot of 1/(F-F 0 ) against 1/[β-Cyclodextrin] gave a straight line indicating 1 : 1 stoichiometric ratio of the inclusion complex formed. In this inclusion process, the ΔG < 0 value describes the process to be a spontaneous one.

A R T I C L E D E T A I L S A B S T R A C T Article history:Received 06 formation have been determined. In addition, the 1 H NMR spectra of carbohydrates, IL and carbohydrate + IL + D2O were studied. The NMR study does not show any special and strong interactions between IL and carbohydrates but, the macro properties and their changes in terms of size and structure of carbohydrates and IL have been discussed. By means of the interaction between IL and biomolecules, the potential toxicity of ILs may originate.