Brand new Dual Absorption and Emission Smartphone-Based Spectrophotometer (DAESS) for the study of the role of water in the preparation of Natural Deep Eutectic Solvents

Natural Deep Eutectic Solvents (NADES) are highly important for Green Chemistry principles and can be used instead of harmful organic solvents. Indeed, nowadays smartphone-based analytical devices replace some traditional laboratory equipment. In the present work, a smartphone based dual spectrophotometer spectrofluorometer device was designed, 3D manufactured, validated. A resolution 0.241 ± 0.010 pixel.nm?1 stability comparable with commercial instruments were obtained. Using proposed it possible, first time, to study role water in NADES (fructose:urea:water) preparation, by testing influence structural dilution water. this sense, observed that when added before preparation (integrated into superstructure solvent), fluorescence absorbance intensities sharply decayed (up 90% 95%, respectively). contrast, had minor effects on spectroscopic features eutectic system, which expressed as 29% 23% diminution signal both techniques. The obtained results suggest moment is plays significant properties.