Investigation of the physicochemical properties of novel urea-organic amine complexes for agricultural applications

Abstract

The development of environmentally friendly and highly efficient agrochemical materials is an important objective of modern agricultural chemistry. Among various approaches, the synthesis of urea-based organic complexes has attracted considerable attention due to their potential to improve nutrient availability, enhance physicochemical stability, and increase fertilizer efficiency. In the present study, novel urea-organic amine complexes were synthesized and their physicochemical properties were systematically investigated with the aim of evaluating their potential agricultural applications. The synthesized complexes were prepared through interactions between urea and selected organic amines under controlled experimental conditions. Their physicochemical characteristics were examined using a combination of analytical and instrumental techniques. Particular attention was devoted to structural features, thermal behavior, solubility characteristics, and important physicochemical parameters, including pH, density, viscosity, and refractive index. The influence of organic amine incorporation on the properties of the resulting complexes was also assessed. The obtained results demonstrated the successful formation of stable urea-organic amine complexes exhibiting distinct physicochemical properties compared with the individual starting components. Structural investigations confirmed the presence of intermolecular interactions between urea molecules and organic amines, leading to the formation of new supramolecular systems. Thermal analysis revealed satisfactory thermal stability of the synthesized complexes, while solubility studies indicated favorable dissolution behavior in aqueous media. Significant variations in density, viscosity, and pH values were observed depending on the nature of the organic amine component, reflecting changes in molecular organization and intermolecular interactions. The synthesized complexes exhibited physicochemical characteristics that may contribute to improved nutrient utilization and controlled release behavior in agricultural systems. Their enhanced stability and favorable solubility properties suggest potential applicability as components of advanced agrochemical formulations. Furthermore, the ability to modify the physicochemical parameters of the complexes through selection of appropriate organic amines provides opportunities for tailoring their properties to specific agricultural requirements. The findings demonstrate that novel urea-organic amine complexes represent promising materials for agricultural applications. The comprehensive physicochemical characterization performed in this study provides valuable information regarding their structure-property relationships and establishes a scientific basis for future investigations involving agronomic performance, nutrient availability, and fertilizer efficiency.