1- Research and study the possibility of using crown compounds to determine metal ions, especially the ions of the lanthanide group, through the formation of stable complexes with these ions. 2- Research and study of the preparation of new shiff bases that contain active centers and the possibility of employing these active centers in complexing with metal ions that are difficult to estimate in normal conditions. 3- Preparation of new hybrid nanocomposites and the possibility of using them as sensors for gases and biological materials, as well as antibiotics in the industrial and biological fields.