In this study, novel deep eutectic mixtures have been prepared using Thymol (Thy) as a hydrogen bond donor (HBD) and Phenol (Ph), Trichloroacetic acid (TriCAA), Guaiacol (Gu), and Vanillin (Van), as hydrogen bond acceptors (HBAs) at suitable molar ratios. The prepared novel deep eutectic solvents were characterized by measuring their physical properties, such as freezing point, density, sound velocity, viscosity, conductivity, surface tension, and refractive index, with the variation of temperature in the range of 20 °C to 60 °C. Their chemical structures, purity, and interactions between HBAs and HBD were studied by using 1H and 13C NMR and FTIR techniques. The experimental values of prepared novel deep eutectic mixtures that have been investigated in this work can be useful for extracting natural compounds due to the hydrophobicity of novel deep eutectic solvents.
