Synthesis and thermal analysis of nanocomplexe with Erbium, mesoionic 2-(4-chlorophenyl)-3-methyl-4-(4-methylphenyl)-1,3-thiazolium-5-thiolate and Bipyridine: prospect of a biotechnological application in health

摘要

The study of nanomaterials has become a very important line of research in areas such as solid state physics, solid state chemistry, materials engineering, medical sciences and biotechnology. In this sense, the development of research involving lanthanides increased significantly in function of the exploitation of the luminescent properties of these elements, making possible its applicability for the production of light converters molecular devices, which can find diverse applications the example of luminescent markers in fluoro-imunoensaios. Parallel, stand out scientific studies of organic compounds that present biological properties, amongst which are distinguished mesoionics compounds, that present structural characteristics, that have attracted considerable interest of involved researchers in the area of Medicinal Chemistry. In this sense, the possibility to coordinate and to associate the properties of lanthanides ions with mesoionic compounds in order to preserve the structural characteristics of these, have attracted the attention of researchers. However, the coordination compounds containing lanthanide ions present its luminescent properties affected by coordinated water molecules, which reduce the intensity of emission due the resonance between its vibracionais states and the emitting states of the metallic ion. In the attempt to contour the favoring of a non-radiative way becomes essential the use of the second organic ligant of the heterobiaril type (bipiridina), since, the same it presents high coefficient of molar absortivity, and is capable to efficiently transfer energy to the ion lanthanide, favoring the increase in the luminescence intensity and potentiate the biological activity of the new complex.